Measurement of $\alpha_{s}$ with Radiative Hadronic Events (2009)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Anagnostou, G, Anderson, K J, ...
Hadronic final states with a hard isolated photon are studied using data taken at centre-of-mass energies around the mass of the Z0 boson with the OPAL detector at LEP. The strong coupling alpha S is...
Search for Charged Higgs Bosos in $e^{+}e^{-}$ Collisions at $\sqrt{s}$ = 189-209 GeV (2008)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Anagnostou, G, Anderson, K J, ...
A search is made for charged Higgs bosons predicted by Two-Higgs-Doublet extensions of the Standard Model (2HDM) using electron-positron collision data collected by the OPAL experiment at...
Search for Charged Higgs Bosos in e+e- Collisions at sqrts(s) = 189-209 GeV (2008)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Anagnostou, G, Anderson, K J, ...
A search is made for charged Higgs bosons predicted by Two-Higgs-Doublet extensions of the Standard Model (2HDM) using electron-positron collision data collected by the OPAL experiment at...
Ackerstaff, K, Alexander, G, Allison, J, Altekamp, N, Anderson, K J, Anderson, S, ...
The inclusive production of prompt photons with energy above 10 GeV is measured using the OPAL detector in hadronic Z^0 decays at LEP. In contrast to previous measurements, the prompt photons were...
Measurement of f(c -> D^*+ X), f(b -> D^*+ X) and Gamma_cc(bar)/Gamma_had using D^*+/- Mesons (2008)
Al, K Ackerstaff Et, Ackerstaff, K, Alexander, G, Allison, J, Altekamp, N, Anderson, K J, ...
The production rates of D^*+/- mesons in charm and bottom events at centre-of-mass energies of about 91 GeV and the partial width of primary cc(bar) pairs in hadronic Z^0 decays have been measured at...
A Measurement of the B_s^0 Lifetime using Reconstructed D_s^- Mesons (2008)
Al, K Ackerstaff Et, Ackerstaff, K, Alexander, G, Allison, J, Altekamp, N, Anderson, K J, ...
We report a measurement of the B^0_s meson lifetime from B_s^0 -> D^-_s X decays, where D_s^- mesons are reconstructed in the D_s^- -> phi pi^- and D_s^- -> K^{*0} K^- decay channels. From...
Al, K Ackerstaff Et, Alexander, G, Allison, J, Altekamp, N, Anderson, K J, Anderson, S, ...
Production of events with hadronic and leptonic final states has been measured in e^+e^- collisions at centre-of-mass energies of 130-172 GeV, using the OPAL detector at LEP. Cross-sections and...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
A measurement of the top quark pair production cross section in proton anti-proton collisions at an interaction energy of sqrt(s)=1.96 TeV is presented. This analysis uses 405 pb-1 of data collected...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
A measurement of the top quark pair production cross section in proton anti-proton collisions at an interaction energy of sqrt(s)=1.96 TeV is presented. This analysis uses 405 pb-1 of data collected...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
A measurement of the top quark pair production cross section in proton anti-proton collisions at an interaction energy of sqrt(s)=1.96 TeV is presented. This analysis uses 405 pb-1 of data collected...
Measurement of the $e^+ e^- \to W^+ W^-$ cross section and W decay branching fractions at LEP (2007)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Anagnostou, G, Anderson, K J, ...
From a total data sample of 701.1 pb^-1 recorded with e+e- centre-of-mass energies of sqrt = 161-209 GeV with the OPAL detector at LEP, 11693 W-pair candidate events are selected. These data are used...
Bose-Einstein study of position-momentum correlations of charged pions in hadronic Z0 decays (2007)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Anagnostou, G, Anderson, K J, ...
A study of Bose-Einstein correlations in pairs of identically charged pions produced in e+e- annihilations at the Z0 peak has been performed for the first time assuming a non-static emitting source....
Search for $B^0_ s \to \mu^+ \mu^-$ decays at D0 (2007)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report results from a search for the decay Bs --> mu+ mu- using 1.3/fb of pbar p collisions at sqrt(s)= 1.96 TeV collected by the D0 experiment at the Fermilab Tevatron Collider. We find two...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
Data collected by the D0 detector at a p-pbar center-of-mass energy of 1.96 TeV at the Fermilab Tevatron Collider have been used to search for pair production of the lightest supersymmetric partner...
Measurement of the $\Lambda_b^0$ lifetime using semileptonic decays (2007)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report a measurement of the Lambda_b lifetime using a sample corresponding to 1.3 fb$^{-1}$ of data collected by the D0 experiment in 2002--2006 during Run II of the Fermilab Tevatron collider....
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Aguilo, E., ...
We present a measurement of the shape of the boson rapidity distribution for p\bar{p}-> Z/gamma*-> e+e- +X events at a center-of-mass energy of 1.96 TeV. The measurement is made for events with...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Aguilo, E., ...
We present a measurement of the shape of the boson rapidity distribution for p\bar{p}-> Z/gamma*-> e+e- +X events at a center-of-mass energy of 1.96 TeV. The measurement is made for events with...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Aguilo, E., ...
We present a measurement of the shape of the boson rapidity distribution for p\bar{p}-> Z/gamma*-> e+e- +X events at a center-of-mass energy of 1.96 TeV. The measurement is made for events with...
Search for techniparticles in e +jets events at D0 (2007)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We search for the technicolor process ppbar -> rho_T/omega_T ->W+pi_T in events containing one electron and two jets, in data corresponding to an integrated luminosity of 390 pb-1, recorded by the D0...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Anagnostou, G, Anderson, K J, ...
A search is performed for Higgs bosons decaying into invisible final states, produced in association with a Zo boson in e+e- collisions at energies between 183 and 209 GeV. The search is based on...
Search for Dirac Magnetic Monopoles in $e^{+}e^{-}$ Collisions with the OPAL Detector at LEP2 (2007)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Anagnostou, G, Anderson, K J, ...
This letter describes a direct search for pair produced magnetic monopoles in e+e- collisions. The analysis is based on 62.7 pb^-1 of data collected with the OPAL detector at an average...
Evidence for production of single top quarks and first direct measurement of $|V_{tb}|$ (2007)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
The D0 Collaboration presents first evidence for the production of single top quarks at the Fermilab Tevatron ppbar collider. Using a 0.9 fb^-1 dataset, we apply a multivariate analysis to separate...
Evidence for production of single top quarks and first direct measurement of $|V_{tb}|$ (2007)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
The D0 Collaboration presents first evidence for the production of single top quarks at the Fermilab Tevatron ppbar collider. Using a 0.9 fb^-1 dataset, we apply a multivariate analysis to separate...
Evidence for production of single top quarks and first direct measurement of $|V_{tb}|$ (2007)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
The D0 Collaboration presents first evidence for the production of single top quarks at the Fermilab Tevatron ppbar collider. Using a 0.9 fb^-1 dataset, we apply a multivariate analysis to separate...
Inclusive Jet Production in Photon-Photon Collisions at $\sqrt{^{s}ee}$ from 189 to 209 GeV (2007)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Anagnostou, G, Anderson, K J, ...
Inclusive jet production (e+e- -> e+e- +jet+X) is studied in collisions of quasi-real photons radiated by the LEP beams at e+e- centre-of-mass energies sqrt see from 189 to 209 GeV. Jets are...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a study of eegamma and mumugamma events using over 1 fb-1 of data collected with the D0 detector at the Fermilab Tevatron ppbar Collider at sqrt(s) = 1.96 TeV. Having observed 453 (515)...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a measurement of the ttbar pair production cross section in ppbar collisions at sqrt(s) = 1.96 TeV utilizing approximately 425 pb-1 of data collected with the D0 detector. We consider...
Observation and properties of L=1 $B_1$ and B$_2^*$ mesons (2007)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
Excited B mesons B_1 and B_2* are observed directly for the first time as two separate states in fully reconstructed decays to B+(*) pi-. The mass of B_1 is measured to be (5720.6 +- 2.4 +- 1.4)...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a measurement of the top quark pair production cross section in ppbar collisions at sqrt(s)=1.96 TeV utilizing 425 pb-1 of data collected with the D0 detector at the Fermilab Tevatron...
Multivariate searches for single top quark production with the D0 detector (2007)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a search for electroweak production of single top quarks in the s-channel (p-pbar -> t bbar + X) and t-channel (p-pbar -> tq bbar + X) modes. We have analyzed 230 pb^(-1) of data collected...
Measurement of the top quark mass in the lepton+jets channel using the ideogram method (2007)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
A measurement of the top quark mass using events with one charged lepton, missing transverse energy, and jets in the final state, collected by the D0 detector from p-pbar collisions at sqrt{s} = 1.96...
Measurement of the charge asymmetry in semileptonic $B^0_s$ decays (2007)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We have performed the first direct measurement of the time integrated flavor untagged charge asymmetry in semileptonic Bs decays, Asl(unt), by comparing the decay rate of Bs --> mu+ Ds- nu X, where...
Search for a Higgs boson produced in association with a Z boson in $p\bar{p}$ collisions (2007)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We describe a search for the standard model Higgs boson with a mass of 105 GeV/c^2 to 145 GeV/c^2 in data corresponding to an integrated luminosity of approximately 450 pb^{-1} collected with the D0...
Search for third-generation leptoquarks in $p\bar p$ collisions at $\sqrt{s}$=1.96 TeV (2007)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report on a search for charge-1/3 third-generation leptoquarks (LQ) produced in ppbar collisions at sqrt(s)=1.96 TeV using the D0 detector at Fermilab. Third generation leptoquarks are assumed to...
Search for stopped gluinos from $p\bar p$ collisions at $\sqrt{s}$=1.96 TeV (2007)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
Long-lived, colored, heavy particles are predicted in several models beyond the standard model of particle physics, one example being the gluino ($\tilde g$) in split supersymmetry. Some fraction of...
Measurement of the $\Lambda_b$ lifetime in the exclusive decay $\Lambda_b \to J/\psi \Lambda$ (2007)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We have measured the Lambda_b lifetime using the exclusive decay Lambda_b to J/psi Lambda, based on 1.2 fb-1 of data collected with the D0 detector during 2002-2006. From 171 reconstructed Lambda_b...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
A search for leptoquarks has been performed in 310 pb-1 of data from ppbar collisions at a center-of-mass energy of 1.96 TeV, collected by the D0 detector at the Fermilab Tevatron Collider. The...
Measurement of B(t$\to$Wb)/B(t$\to$Wq) at $\sqrt(s)$ = 1.96 TeV (2007)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present the measurement of R = B(t->Wb)/B(t->Wq) in ppbar collisions at sqrt(s) = 1.96 TeV, using 230 pb-1 of data collected by the DO experiment at the Fermilab Tevatron Collider. We fit...
The upgraded D0 detector (2007)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, D.L., Adams, M., ...
The D0 experiment enjoyed a very successful data-collection run at the Fermilab Tevatron collider between 1992 and 1996. Since then, the detector has been upgraded to take advantage of improvements...
Measurement of the W boson helicity in top quark decay at D0 (2007)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a measurement of the fraction f_+ of right-handed W bosons produced in top quark decays, based on a candidate sample of ttbar events in the l+jets and dilepton decay channels corresponding...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report on a search for second generation leptoquarks LQ_2 which decay into a muon plus quark in p\bar{p} collisions at a center-of-mass energy of sqrt{s} = 1.96 TeV in the D0 detector using an...
Lifetime difference and CP-violating phase in the $B_s^0$ system (2007)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
From an analysis of the decay Bs -> J/psi phi we obtain the width difference between the light and heavy mass eigenstates, and the CP-violating phase.
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report on a search for second generation leptoquarks LQ_2 which decay into a muon plus quark in p\bar{p} collisions at a center-of-mass energy of sqrt{s} = 1.96 TeV in the D0 detector using an...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report on a search for second generation leptoquarks LQ_2 which decay into a muon plus quark in p\bar{p} collisions at a center-of-mass energy of sqrt{s} = 1.96 TeV in the D0 detector using an...
Measurement of the branching fraction Br(B$^0_s \to D^{(*)}_s D^{(*)}_s)$ (2007)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report a measurement of the branching fraction Br(Bs -> Ds(*) Ds(*)) using a data sample corresponding to 1.3 fb^{-1} of integrated luminosity collected by the D0 experiment in 2002-2006 during...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
A search for the pair production of scalar top quarks, or stops, has been performed in 360 pb-1 of data from p pbar collisions at a center-of-mass energy of 1.96 TeV, collected by the D0 detector at...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We combine the D0 measurement of the width difference between the light and heavy B_s^0 mass eigenstates and of the CP-violating mixing phase determined from the time-dependent angular distributions...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We search for the production of single top quarks via flavor-changing neutral current couplings of a gluon to the top quark and a charm (c) or up (u) quark. We analyze 230 pb^{-1} of lepton+jets data...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present the first experimental discrimination between the 2e/3 and 4e/3 top quark electric charge scenarios, using top quark pairs (ttbar) produced in ppbar collisions at sqrt{s}=1.96 TeV by the...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report a new measurement of the ttbar production cross section in pbarp collisions at a center-of-mass energy of 1.96 TeV using events with one charged lepton (electron or muon), missing...
Inclusive Production of Charged Hadrons in Photon-Photon Collisions (2006)
Abbiendi, G, Åkesson, P F, De Roeck, A, Zivkovic, L, Zer-Zion, D, Yamashita, S, ...
The inclusive production of charged hadrons in the collisions of quasi-real photons e+e- -> e+e- +X has been measured using the OPAL detector at LEP. The data were taken at e+e- centre-of-mass...
Inclusive Production of Charged Hadrons in Photon-Photon Collisions (2006)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Anagnostou, G, Anderson, K, ...
The inclusive production of charged hadrons in the collisions of quasi-real photons e+e- -> e+e- +X has been measured using the OPAL detector at LEP. The data were taken at e+e- centre-of-mass...
Measurement of $B_d$ mixing using opposite-side flavor tagging (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report on a measurement of the $B^0_d$ mixing frequency and the calibration of an opposite-side flavor tagger in the D{\O}experiment. Various properties associated with the $b$ quark on the...
Measurement of the $B^{0}_{s}$ lifetime using semileptonic decays (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report a measurement of the $B^0_{s}$ lifetime in the semileptonic decay channel $B^0_{s}\to D^-_s \mu^{+}\nu X$ (and its charge conjugate), using approximately 0.4 fb$^{-1}$ of data collected...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a measurement of the top quark mass with the Matrix Element method in the lepton+jets final state. As the energy scale for calorimeter jets represents the dominant source of systematic...
Measurement of the top quark mass in the dilepton channel (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a measurement of the top quark mass in the dilepton channel based on approximately 370/pb of data collected by the D0 experiment during Run II of the Fermilab Tevatron collider. We employ...
Search for $W'$ boson production in the $W' \to t\bar{b}$ decay channel (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a search for the production of a new heavy gauge boson W' that decays to a top quark and a bottom quark. We have analyzed 230 pb$^{-1}$ of data collected with the \dzero detector at the...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We measure the dimuon charge asymmetry A in pp(bar) collisions at a center of mass energy sqrt{s} = 1960 GeV. The data was recorded with the D0 detector and corresponds to an integrated luminosity of...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a study of events with Z bosons and jets produced at the Fermilab Tevatron Collider in ppbar collisions at a center of mass energy of 1.96 TeV. The data sample consists of nearly 14,000...
Search for excited muons in $p\bar{p}$ collisions at $\sqrt{s}$ = 1.96 TeV (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present the results of a search for the production of an excited state of the muon, mu*, in proton antiproton collisions at sqrt s = 1.96 TeV. The data have been collected with the D0 experiment...
Search for the rare decay $B^0_s \rightarrow \phi \mu^+ \mu^-$ with the D0 detector (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a search for the flavor-changing neutral current decay B0_s -> phi mu+ mu- using about 0.45 fb^-1 of data collected in p \bar p collisions at sqrt{s} =1.96 TeV with the D{\O}detector at...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report on a search for the pair production of second generation scalar leptoquarks (LQ_2) in ppbar collisions at the center-of-mass energy sqrt(s) = 1.96 TeV, using data corresponding to an...
Abazov, V.M., Abbott, B., Abolins, M., S. Acharya, B., Adams, M., Adams, T., ...
A search for direct production of scalar bottom quarks (sb) is performed with 310 pb-1 of data collected by the DO experiment in ppbar collisions at sqrt(s)=1.96 TeV at the Fermilab Tevatron...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a search for a neutral particle, pair-produced in p-pbar collisions at sqrt(s)=1.96 TeV, which decays into two muons and lives long enough to travel at least 5 cm before decaying. The...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report a search for the standard model (SM) Higgs boson based on data collected by the D0 experiment at the Fermilab Tevatron Collider, corresponding to an integrated luminosity of 260 pb^-1. We...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present the results of the first search for a new particle X produced in $p\bar{p}$ collisions at \sqrt{s}=1.96 TeV and subsequently decaying to Z\gamma. The search uses 0.3 fb$^{-1}$ of data...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
Limits are set on anomalous WWgamma and WWZ trilinear gauge couplings using W+W- -> e+e-, W+W- -> e mu, and W+W- -> mu+mu- events. The data set was collected by the Run II D0 detector at the Fermilab...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Anagnostou, G, Anderson, K J, ...
This paper describes a topological search for an invisibly decaying Higgs boson,H, produced via the Bjorken process (e+e- -> HZ). The analysis is based on data recorded using the OPAL detector at LEP...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a search for associated Higgs boson production in the process $p\bar{p} \to WH\to WWW^*\to l^\pm\nu l'^\pm\nu'+X$ in final states containing two like-sign isolated electrons or muons...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
A search for the production of neutral Higgs bosons Phi decaying into tau^+tau^- final states in p-pbar collisions at a center-of-mass energy of 1.96 TeV is presented. The data, corresponding to an...
Search for resonant second generation slepton production at the Fermilab Tevatron (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a search for supersymmetry in the R-parity violating resonant production and decay of smuons and muon-sneutrinos in the channels smuon->neutralino_1 muon, smuon->neutralino_2 muon, and...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We have searched for a heavy resonance decaying into a Z+jet final state in p-pbar collisions at a center of mass energy of 1.96 TeV at the Fermilab Tevatron collider using the D0 detector. No...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
The results of a search for squarks and gluinos using data from ppbar collisions recorded at a center-of-mass energy of 1.96 TeV by the DO detector at the Fermilab Tevatron Collider are reported. The...
Direct limits on the $B_s^0$ oscillation frequency (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report the first direct two-sided bound on the $B^0_s$ oscillation frequency using a large sample of $B^0_s$ semileptonic decays corresponding to approximately 1 fb$^{-1}$ of integrated luminosity...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
The cross section for the inclusive production of isolated photons has been measured in p anti-p collisions at sqrt{s}=1.96 TeV with the D0 detector at the Fermilab Tevatron Collider. The photons...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a search for the standard model Higgs boson in $H \to WW^{(*)}$, decays with $e^+e^-, e^\pm e^\mp$ and $\mu^+\mu^-$ final states in $p\bar{p}$ collisions at a center-of-mass energy of...
Measurement of semileptonic branching fractions of B mesons to narrow D$^{**}$ states (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
Using the data accumulated in 2002-2004 with the DO detector in proton-antiproton collisions at the Fermilab Tevatron collider with centre-of-mass energy 1.96 TeV, the branching fractions of the...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
A search for gaugino pair production with a trilepton signature in the framework of R-parity violating supersymmetry via the couplings lambda_121, lambda_122, or lambda_133 is presented. The data,...
Search for Randall-Sundrum gravitons in dilepton and diphoton final states (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report the first direct search for the Kaluza-Klein (KK) modes of Randall-Sundrum gravitons using dielectron, dimuon, and diphoton events observed with the D0 detector operating at the Fermilab...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report on a search for pair production of first-generation scalar leptoquarks (LQ) in ppbar collisions at sqrt(s)=1.96 TeV using an integrated luminosity of 252pb-1 collected at the Fermilab...
M. Abazov, V., Abbott, B., Abolins, M., S. Acharya, B., Adams, M., Adams, T., ...
We present a measurement of the cross section for $Z$ production times the branching fraction to $\tau$ leptons, $\sigma \cdot$Br$(Z\to \tau^+ \tau^-)$, in $p \bar p$ collisions at $\sqrt{s}=$1.96...
Measurement of the lifetime difference in the B$_s^0$ system (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a study of the decay B$_s^0 \to J/\psi \phi$ We obtain the CP-odd fraction in the final state at time zero, R$_\perp$ = 0.16 $\pm$ 0.10 (stat) $\pm$ 0.02 (syst), the average lifetime of...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a measurement of the top quark pair $t\bar{t}$ production cross section in $p\bar{p}$ collisions at a center-of-mass energy of 1.96 TeV using 230 pb$^{-1}$ of data collected by the DO...
Search for large extra spatial dimensions in dimuon production with the D0 detector (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present the results of a search for the effects of large extra spatial dimensions in $p{\bar p}$ collisions at $\sqrt{s} =$ 1.96 TeV in events containing a pair of energetic muons. The data...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a measurement of the top quark pair $(t\bar{t})$ production cross section in $p\bar{p}$ collisions at a center-of-mass energy of 1.96 TeV using 230 pb$^{-1}$ of data collected by the DO...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a measurement of the top quark pair ($t\bar{t}$) production cross section ($\sigma_{t\bar{t}}$) in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV using 230 pb$^{-1}$ of data collected by the...
Search for single top quark production in ppbar collisions at $\sqrt{s}$=1.96 TeV (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a search for electroweak production of single top quarks in the s-channel and t-channel using neural networks for signal-background separation. We have analyzed 230 pb$^{-1}$ of data...
Search for right-handed W bosons in top quark decay (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a measurement of the fraction f+ of right-handed W bosons produced in top quark decays, based on a candidate sample of $t\bar{t}$ events in the lepton+jets decay mode. These data...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
A search for associated production of charginos and neutralinos is performed using data recorded with the D0 detector at a ppbar center-of-mass energy of 1.96 TeV at the Fermilab Tevatron Collider....
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
The WWgamma triple gauge boson coupling parameters are studied using p-pbar -> l nu gamma + X (l = e,mu) events at sqrt(s) = 1.96 TeV. The data were collected with the DO detector from an integrated...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present results from a search for WZ production with subsequent decay to l nu l'-bar l' (l and l'=electron or muon) using 0.30 fb^(-1) of data collected by the DO experiment between 2002 and 2004...
Search for neutral supersymmetric Higgs bosons in multijet events at $\sqrt{s}$ = 1.96 TeV (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We have performed a search for neutral Higgs bosons produced in association with bottom quarks in $p\bar{p}$ collisions, using 260 $pb^{-1}$ of data collected with the D0 detector in Run II of the...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a measurement of the Z\gamma production cross section and limits on anomalous ZZ\gamma and Z\gamma\gamma couplings for form-factor scales of Lambda = 750 and 1000 GeV. The measurement is...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present measurements of the inclusive production cross sections of the Upsilon(1S) bottomonium state in ppbar collisions at sqrt(s) = 1.96 TeV. Using the Upsilon(1S) to mu+mu- decay mode for a...
Search for anomalous heavy-flavor quark production in association with W bosons (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We search for anomalous production of heavy-flavor quark jets in association with a W bosons at the Fermilab Tevatron ppbar Collider in final states in which the heavy-flavor quark content is...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
Using the data collected with the DZero detector at sqrt(s)=1.96-TeV, for integrated luminosities of about 180 pb^{-1}, we have measured the ratio of inclusive cross sections for p+pbar->Z+bjet to...
Abazov, V.M., Abbott, R., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present measurements of the Lambda^0_b lifetime in the exclusive decay channel Lambda^0_{b}->J/psi Lambda^0, with J/psi to mu+ mu- and Lambda^0 to p pi-, the B^0 lifetime in the decay B^0 -> J/psi...
Measurement of the ratio of B$^+$ and B$^0$ meson lifetimes (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
The ratio of the B+ and B0 meson lifetimes was measured using data collected in 20022004 by the D0 experiment in Run II of the Fermilab Tevatron Collider. These mesons were reconstructed in...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a search for W b \bar{b} production in p \bar{p} collisions at sqrt{s}=1.96 TeV in events containing one electron, an imbalance in transverse momentum, and two b-tagged jets. Using 174...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, D.L., Adams, M., ...
We present a measurement of the W boson pair-production cross section in p anti-p collisions at a center-of-mass energy of sqrt{s}=1.96 TeV. The data, collected with the Run II DO detector,...
Abazov, V.M., Abbott, R., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present the results of a search for the flavor-changing neutral current decay B0_s -> mu+ mu- using a data set with integrated luminosity of 240 pb^{-1} of pp(bar) collisions at sqrt{s}=1.96 TeV...
Search for supersymmetry with gauge-mediated breaking in diphoton events at D0 (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, D.L., Adams, M., ...
We report the results of a search for supersymmetry (SUSY) with gauge-mediated breaking in the missing transverse energy distribution of inclusive diphoton events using 263 pb$^{-1}$ of data...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, D.L., Adams, M., ...
Using the exclusive decay B^0_s -> J/psi (mu+mu-) phi(K+K-), we report the most precise single measurement of the B^0_s lifetime. The data sample corresponds to an integrated luminosity of...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, D.L., Adams, M., ...
Correlations in the azimuthal angle between the two largest transverse momentum jets have been measured using the D0 detector in pp-bar collisions at a center-of-mass energy sqrt(s)=1.96 TeV. The...
Abazov, V.M., Abbott, R., Abolins, M., Acharya, B.S., Adams, D.L., Adams, M., ...
We report the observation of the X(3872) in the J/psi pi+pi- channel, with J/psi decaying to mu+mu- in p-p(bar) collisions at sqrt(s) = 1.96 TeV. Using approximately 230 pb^-1 of data collected with...
QCD coherence and correlations of particles with restricted momenta in hadronic Z decays (2006)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Anagnostou, G, Anderson, K J, ...
QCD coherence effects are studied based on measurements of correlations of particles with either restricted transverse momenta, pT
QCD coherence and correlations of particles with restricted momenta in hadronic Z decays (2006)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Anagnostou, G, Anderson, K J, ...
QCD coherence effects are studied based on measurements of correlations of particles with either restricted transverse momenta, pT
Precision Electroweak Measurements on the Z Resonance (2006)
Schael, S, Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, ...
We report on the final electroweak measurements performed with data taken at the Z resonance by the experiments operating at the electron-positron colliders SLC and LEP. The data consist of 17...
Precision Electroweak Measurements on the Z Resonance (2006)
Schael, S, Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, ...
We report on the final electroweak measurements performed with data taken at the Z resonance by the experiments operating at the electron-positron colliders SLC and LEP. The data consist of 17...
Search for Neutral MSSM Higgs Bosons at LEP (2006)
Schael, S, Zivkovic, L, Achard, P, Adriani, O, Aguilar-Benítez, M, Alcaraz, J, ...
The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for the neutral Higgs bosons which are predicted by the Minimal Supersymmetric Standard Model (MSSM). The data of the four...
Search for Neutral MSSM Higgs Bosons at LEP (2006)
Schael, S, Achard, P, Adriani, O, Aguilar-Benítez, M, Alcaraz, J, Alemanni, G, ...
The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for the neutral Higgs bosons which are predicted by the Minimal Supersymmetric Standard Model (MSSM). The data of the four...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Anagnostou, G, Anderson, K J, ...
Data from e+e- annihilation into hadrons at centre-of-mass energies between 91 GeV and 209 GeV collected with the OPAL detector at LEP, are used to study the four-jet rate as a function of the Durham...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Anagnostou, G, Anderson, K J, ...
Data from e+e- annihilation into hadrons at centre-of-mass energies between 91 GeV and 209 GeV collected with the OPAL detector at LEP, are used to study the four-jet rate as a function of the Durham...
Search for neutral MSSM Higgs bosons at LEP (2006)
Schael, S., Barate, R., Bruneliere, R., De Bonis, I., Decamp, D., Goy, C., ...
The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for the neutral Higgs bosons which are predicted by the Minimal Supersymmetric standard model (MSSM). The data of the four...
First direct two-sided bound on the $B_s^0$ oscillation frequency (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report the first direct two-sided bound on the $B^0_s$ oscillation frequency using a large sample of $B^0_s$ semileptonic decays corresponding to approximately 1 fb$^{-1}$ of integrated luminosity...
Measurement of B(t$\to$Wb)/B(t$\to$Wq) at $\sqrt(s)$ = 1.96 TeV (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present the measurement of R = B(t->Wb)/B(t->Wq) in ppbar collisions at sqrt(s) = 1.96 TeV, using 230 pb-1 of data collected by the DO experiment at the Fermilab Tevatron Collider. We fit...
Search for neutral MSSM Higgs bosons (2006)
Achard, P., Adriani, O., Aguilar-Benítez, M., Alcaraz, J., Alemanni, G., Allaby, J., ...
The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for the neutral Higgs bosons which are predicted by the Minimal Supersymmetric Standard Model (MSSM). The data of the four...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report on a search for the pair production of second generation scalar leptoquarks (LQ_2) in ppbar collisions at the center-of-mass energy sqrt(s) = 1.96 TeV, using data corresponding to an...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a search for the standard model Higgs boson in $H \to WW^{(*)}$, decays with $e^+e^-, e^\pm e^\mp$ and $\mu^+\mu^-$ final states in $p\bar{p}$ collisions at a center-of-mass energy of...
First direct two-sided bound on the $B_s^0$ oscillation frequency (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report the first direct two-sided bound on the $B^0_s$ oscillation frequency using a large sample of $B^0_s$ semileptonic decays corresponding to approximately 1 fb$^{-1}$ of integrated luminosity...
Measurement of B(t$\to$Wb)/B(t$\to$Wq) at $\sqrt(s)$ = 1.96 TeV (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present the measurement of R = B(t->Wb)/B(t->Wq) in ppbar collisions at sqrt(s) = 1.96 TeV, using 230 pb-1 of data collected by the DO experiment at the Fermilab Tevatron Collider. We fit...
Search for neutral MSSM Higgs bosons (2006)
Achard, P., Adriani, O., Aguilar-Benítez, M., Alcaraz, J., Alemanni, G., Allaby, J., ...
The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for the neutral Higgs bosons which are predicted by the Minimal Supersymmetric Standard Model (MSSM). The data of the four...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report on a search for the pair production of second generation scalar leptoquarks (LQ_2) in ppbar collisions at the center-of-mass energy sqrt(s) = 1.96 TeV, using data corresponding to an...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a search for the standard model Higgs boson in $H \to WW^{(*)}$, decays with $e^+e^-, e^\pm e^\mp$ and $\mu^+\mu^-$ final states in $p\bar{p}$ collisions at a center-of-mass energy of...
Search for the rare decay $B^0_s \rightarrow \phi \mu^+ \mu^-$ with the D0 detector (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a search for the flavor-changing neutral current decay B0_s -> phi mu+ mu- using about 0.45 fb^-1 of data collected in p \bar p collisions at sqrt{s} =1.96 TeV with the D{\O}detector at...
Multivariate searches for single top quark production with the D0 detector (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a search for electroweak production of single top quarks in the s-channel (p-pbar -> t bbar + X) and t-channel (p-pbar -> tq bbar + X) modes. We have analyzed 230 pb^(-1) of data collected...
A Precise Measurement of the $B^{0}_{s}$ Lifetime (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report a measurement of the $B^0_{s}$ lifetime in the semileptonic decay channel $B^0_{s}\to D^-_s \mu^{+}\nu X$ (and its charge conjugate), using approximately 0.4 fb$^{-1}$ of data collected...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
The results of a search for squarks and gluinos using data from ppbar collisions recorded at a center-of-mass energy of 1.96 TeV by the DO detector at the Fermilab Tevatron Collider are reported. The...
Search for Excited Muons in ppbar Collisions at sqrt(s) = 1.96 TeV (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present the results of a search for the production of an excited state of the muon, mu*, in proton antiproton collisions at sqrt s = 1.96 TeV. The data have been collected with the D0 experiment...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
A search for the production of neutral Higgs bosons Phi decaying into tau^+tau^- final states in p-pbar collisions at a center-of-mass energy of 1.96 TeV is presented. The data, corresponding to an...
Search for resonant second generation slepton production at the Tevatron (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a search for supersymmetry in the R-parity violating resonant production and decay of smuons and muon-sneutrinos in the channels smuon->neutralino_1 muon, smuon->neutralino_2 muon, and...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
A search for gaugino pair production with a trilepton signature in the framework of R-parity violating supersymmetry via the couplings lambda_121, lambda_122, or lambda_133 is presented. The data,...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present the results of the first search for a new particle X produced in $p\bar{p}$ collisions at \sqrt{s}=1.96 TeV and subsequently decaying to Z\gamma. The search uses 0.3 fb$^{-1}$ of data...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
A search for leptoquarks has been performed in 310 pb-1 of data from ppbar collisions at a center-of-mass energy of 1.96 TeV, collected by the D0 detector at the Fermilab Tevatron Collider. The...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We have searched for a heavy resonance decaying into a Z+jet final state in p-pbar collisions at a center of mass energy of 1.96 TeV at the Fermilab Tevatron collider using the D0 detector. No...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a search for associated Higgs boson production in the process $p\bar{p} \to WH\to WWW^*\to l^\pm\nu l'^\pm\nu'+X$ in final states containing two like-sign isolated electrons or muons...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a search for a neutral particle, pair-produced in p-pbar collisions at sqrt(s)=1.96 TeV, which decays into two muons and lives long enough to travel at least 5 cm before decaying. The...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report a search for the standard model (SM) Higgs boson based on data collected by the D0 experiment at the Fermilab Tevatron Collider, corresponding to an integrated luminosity of 260 pb^-1. We...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a study of events with Z bosons and jets produced at the Fermilab Tevatron Collider in ppbar collisions at a center of mass energy of 1.96 TeV. The data sample consists of nearly 14,000...
First determination of the electric charge of the top quark (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present the first determination of the electric charge of the top quark, using top quark pairs (ttbar) produced in ppbar collisions at sqrt(s)=1.96 TeV by the Fermilab Tevatron collider. We use...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We measure the dimuon charge asymmetry A in pp(bar) collisions at a center of mass energy sqrt{s} = 1960 GeV. The data was recorded with the D0 detector and corresponds to an integrated luminosity of...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
Limits are set on anomalous WWgamma and WWZ trilinear gauge couplings using W+W- -> e+e-, W+W- -> e mu, and W+W- -> mu+mu- events. The data set was collected by the Run II D0 detector at the Fermilab...
Search for $W'$ boson production in the $W' \to t\bar{b}$ decay channel (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a search for the production of a new heavy gauge boson W' that decays to a top quark and a bottom quark. We have analyzed 230 pb$^{-1}$ of data collected with the \dzero detector at the...
Measurement of $B_d$ mixing using opposite-side flavor tagging (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report on a measurement of the $B^0_d$ mixing frequency and the calibration of an opposite-side flavor tagger in the D{\O}experiment. Various properties associated with the $b$ quark on the...
Measurement of the W boson helicity in top quark decay at D0 (2006)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a measurement of the fraction f_+ of right-handed W bosons produced in top quark decays, based on a candidate sample of ttbar events in the l+jets and dilepton decay channels corresponding...
Search for neutral MSSM Higgs bosons at LEP (2006)
Achard, P., Adriani, O., Aguilar-Benítez, M., Alcaraz, J., Alemanni, G., Allaby, J., ...
The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for the neutral Higgs bosons which are predicted by the Minimal Supersymmetric Standard Model (MSSM). The data of the four...
Search for neutral MSSM Higgs bosons at LEP (2006)
Achard, P., Adriani, O., Aguilar-Benítez, M., Alcaraz, J., Alemanni, G., Allaby, J., ...
The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for the neutral Higgs bosons which are predicted by the Minimal Supersymmetric Standard Model (MSSM). The data of the four...
Search for neutral MSSM Higgs bosons at LEP (2006)
Achard, P., Adriani, O., Aguilar-Benítez, M., Alcaraz, J., Alemanni, G., Allaby, J., ...
The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for the neutral Higgs bosons which are predicted by the Minimal Supersymmetric Standard Model (MSSM). The data of the four...
Colour reconnection in $e^{+}e^{-}\to W^{+}W^{-}$ at $\sqrt{s}$ = 189 - 209 GeV$ (2005)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
The effects of the final state interaction phenomenon known as colour reconnection are investigated at centre-of-mass energies in the range $\sqrt{s}~ 189-209 GeV using the OPAL detector at LEP....
Measurement of the mass and width of the W boson (2005)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
The mass and width of the W boson are measured using e+e- -> W+W- events from the data sample collected by the OPAL experiment at LEP at centre-of-mass energies between 170 GeV and 209 GeV. The mass...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
Searches were performed for topologies predicted by gauge-mediated Supersymmetry breaking models (GMSB). All possible lifetimes of the next-to-lightest SUSY particle (NLSP), either the lightest...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
Searches were performed for topologies predicted by gauge-mediated Supersymmetry breaking models (GMSB). All possible lifetimes of the next-to-lightest SUSY particle (NLSP), either the lightest...
Determination of $\alpha_{s}$ using Jet Rates at LEP with the OPAL detector (2005)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Anagnostou, G, Anderson, K J, ...
Hadronic events produced in e+e- collisions by the LEP collider and recorded by the OPAL detector were used to form distributions based on the number of reconstructed jets. The data were collected...
Determination of $\alpha_{s}$ using Jet Rates at LEP with the OPAL detector (2005)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Anagnostou, G, Anderson, K J, ...
Hadronic events produced in e+e- collisions by the LEP collider and recorded by the OPAL detector were used to form distributions based on the number of reconstructed jets. The data were collected...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
For the first time at LEP the production of prompt photons is studied in the collisions of quasi-real photons using the OPAL data taken at e+e- centre-of-mass energies between 183 GeV and 209 GeV....
Measurement of the running of the QED coupling in small-angle Bhabha scattering at LEP (2005)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Anagnostou, G, Anderson, K J, ...
Using the OPAL detector at LEP, the running of the effective QED coupling alpha(t) is measured for space-like momentum transfer through its effect on the angular spectrum of small-angle Bhabha...
Measurement of the running of the QED coupling in small-angle Bhabha scattering at LEP (2005)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Anagnostou, G, Anderson, K J, ...
Using the OPAL detector at LEP, the running of the effective QED coupling alpha(t) is measured for space-like momentum transfer through its effect on the angular spectrum of small-angle Bhabha...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
A study of Z-boson pair production in e+e- annihilation at center-of-mass energies between 190 GeV and 209 GeV is reported. Final states containing only leptons, (l+l-l+l- and l+l-nn), quark and...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
A study of Z-boson pair production in e+e- annihilation at center-of-mass energies between 190 GeV and 209 GeV is reported. Final states containing only leptons, (l+l-l+l- and l+l-nn), quark and...
M. Abazov, V., Abbott, B., Abolins, M., S. Acharya, B., Adams, M., Adams, T., ...
We present a measurement of the cross section for $Z$ production times the branching fraction to $\tau$ leptons, $\sigma \cdot$Br$(Z\to \tau^+ \tau^-)$, in $p \bar p$ collisions at $\sqrt{s}=$1.96...
Measurement of the Isolated Photon Cross Section in p-pbar Collisions at $\sqrt{s}$=1.96 TeV (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
The cross section for the inclusive production of isolated photons has been measured in p anti-p collisions at sqrt{s}=1.96 TeV with the D0 detector at the Fermilab Tevatron Collider. The photons...
The Upgraded D0 Detector (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, D.L., Adams, M., ...
The D0 experiment enjoyed a very successful data-collection run at the Fermilab Tevatron collider between 1992 and 1996. Since then, the detector has been upgraded to take advantage of improvements...
Measurement of the lifetime difference in the B$_s^0$ system (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a study of the decay B$_s^0 \to J/\psi \phi$ We obtain the CP-odd fraction in the final state at time zero, R$_\perp$ = 0.16 $\pm$ 0.10 (stat) $\pm$ 0.02 (syst), the average lifetime of...
Measurement of semileptonic branching fractions of B mesons to narrow D$^{**}$ states (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
Using the data accumulated in 2002-2004 with the DO detector in proton-antiproton collisions at the Fermilab Tevatron collider with centre-of-mass energy 1.96 TeV, the branching fractions of the...
Search for Randall-Sundrum gravitons in dilepton and diphoton final states (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report the first direct search for the Kaluza-Klein (KK) modes of Randall-Sundrum gravitons using dielectron, dimuon, and diphoton events observed with the D0 detector operating at the Fermilab...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a measurement of the top quark pair $t\bar{t}$ production cross section in $p\bar{p}$ collisions at a center-of-mass energy of 1.96 TeV using 230 pb$^{-1}$ of data collected by the DO...
Search for large extra spatial dimensions in dimuon production with the D0 detector (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present the results of a search for the effects of large extra spatial dimensions in $p{\bar p}$ collisions at $\sqrt{s} =$ 1.96 TeV in events containing a pair of energetic muons. The data...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a measurement of the top quark pair $(t\bar{t})$ production cross section in $p\bar{p}$ collisions at a center-of-mass energy of 1.96 TeV using 230 pb$^{-1}$ of data collected by the DO...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a measurement of the top quark pair ($t\bar{t}$) production cross section ($\sigma_{t\bar{t}}$) in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV using 230 pb$^{-1}$ of data collected by the...
Search for single top quark production in ppbar collisions at $\sqrt{s}$=1.96 TeV (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a search for electroweak production of single top quarks in the s-channel and t-channel using neural networks for signal-background separation. We have analyzed 230 pb$^{-1}$ of data...
Search for right-handed W bosons in top quark decay (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a measurement of the fraction f+ of right-handed W bosons produced in top quark decays, based on a candidate sample of $t\bar{t}$ events in the lepton+jets decay mode. These data...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
A search for associated production of charginos and neutralinos is performed using data recorded with the D0 detector at a ppbar center-of-mass energy of 1.96 TeV at the Fermilab Tevatron Collider....
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
The WWgamma triple gauge boson coupling parameters are studied using p-pbar -> l nu gamma + X (l = e,mu) events at sqrt(s) = 1.96 TeV. The data were collected with the DO detector from an integrated...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present results from a search for WZ production with subsequent decay to l nu l'-bar l' (l and l'=electron or muon) using 0.30 fb^(-1) of data collected by the DO experiment between 2002 and 2004...
Search for neutral supersymmetric Higgs bosons in multijet events at $\sqrt{s}$ = 1.96 TeV (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We have performed a search for neutral Higgs bosons produced in association with bottom quarks in $p\bar{p}$ collisions, using 260 $pb^{-1}$ of data collected with the D0 detector in Run II of the...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a measurement of the Z\gamma production cross section and limits on anomalous ZZ\gamma and Z\gamma\gamma couplings for form-factor scales of Lambda = 750 and 1000 GeV. The measurement is...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present measurements of the inclusive production cross sections of the Upsilon(1S) bottomonium state in ppbar collisions at sqrt(s) = 1.96 TeV. Using the Upsilon(1S) to mu+mu- decay mode for a...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report on a search for pair production of first-generation scalar leptoquarks (LQ) in ppbar collisions at sqrt(s)=1.96 TeV using an integrated luminosity of 252pb-1 collected at the Fermilab...
Search for anomalous heavy-flavor quark production in association with W bosons (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We search for anomalous production of heavy-flavor quark jets in association with a W bosons at the Fermilab Tevatron ppbar Collider in final states in which the heavy-flavor quark content is...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
Using the data collected with the DZero detector at sqrt(s)=1.96-TeV, for integrated luminosities of about 180 pb^{-1}, we have measured the ratio of inclusive cross sections for p+pbar->Z+bjet to...
Abazov, V.M., Abbott, R., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present measurements of the Lambda^0_b lifetime in the exclusive decay channel Lambda^0_{b}->J/psi Lambda^0, with J/psi to mu+ mu- and Lambda^0 to p pi-, the B^0 lifetime in the decay B^0 -> J/psi...
Measurement of the ratio of B$^+$ and B$^0$ meson lifetimes (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
The ratio of the B+ and B0 meson lifetimes was measured using data collected in 20022004 by the D0 experiment in Run II of the Fermilab Tevatron Collider. These mesons were reconstructed in...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a search for W b \bar{b} production in p \bar{p} collisions at sqrt{s}=1.96 TeV in events containing one electron, an imbalance in transverse momentum, and two b-tagged jets. Using 174...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, D.L., Adams, M., ...
We present a measurement of the W boson pair-production cross section in p anti-p collisions at a center-of-mass energy of sqrt{s}=1.96 TeV. The data, collected with the Run II DO detector,...
Abazov, V.M., Abbott, R., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present the results of a search for the flavor-changing neutral current decay B0_s -> mu+ mu- using a data set with integrated luminosity of 240 pb^{-1} of pp(bar) collisions at sqrt{s}=1.96 TeV...
Search for supersymmetry with gauge-mediated breaking in diphoton events at D0 (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, D.L., Adams, M., ...
We report the results of a search for supersymmetry (SUSY) with gauge-mediated breaking in the missing transverse energy distribution of inclusive diphoton events using 263 pb$^{-1}$ of data...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, D.L., Adams, M., ...
Using the exclusive decay B^0_s -> J/psi (mu+mu-) phi(K+K-), we report the most precise single measurement of the B^0_s lifetime. The data sample corresponds to an integrated luminosity of...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, D.L., Adams, M., ...
Correlations in the azimuthal angle between the two largest transverse momentum jets have been measured using the D0 detector in pp-bar collisions at a center-of-mass energy sqrt(s)=1.96 TeV. The...
M. Abazov, V., Abbott, B., Abolins, M., S. Acharya, B., Adams, M., Adams, T., ...
We present a measurement of the cross section for $Z$ production times the branching fraction to $\tau$ leptons, $\sigma \cdot$Br$(Z\to \tau^+ \tau^-)$, in $p \bar p$ collisions at $\sqrt{s}=$1.96...
Measurement of the Isolated Photon Cross Section in p-pbar Collisions at $\sqrt{s}$=1.96 TeV (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
The cross section for the inclusive production of isolated photons has been measured in p anti-p collisions at sqrt{s}=1.96 TeV with the D0 detector at the Fermilab Tevatron Collider. The photons...
The Upgraded D0 Detector (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, D.L., Adams, M., ...
The D0 experiment enjoyed a very successful data-collection run at the Fermilab Tevatron collider between 1992 and 1996. Since then, the detector has been upgraded to take advantage of improvements...
Measurement of the lifetime difference in the B$_s^0$ system (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a study of the decay B$_s^0 \to J/\psi \phi$ We obtain the CP-odd fraction in the final state at time zero, R$_\perp$ = 0.16 $\pm$ 0.10 (stat) $\pm$ 0.02 (syst), the average lifetime of...
Measurement of semileptonic branching fractions of B mesons to narrow D$^{**}$ states (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
Using the data accumulated in 2002-2004 with the DO detector in proton-antiproton collisions at the Fermilab Tevatron collider with centre-of-mass energy 1.96 TeV, the branching fractions of the...
Search for Randall-Sundrum gravitons in dilepton and diphoton final states (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report the first direct search for the Kaluza-Klein (KK) modes of Randall-Sundrum gravitons using dielectron, dimuon, and diphoton events observed with the D0 detector operating at the Fermilab...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a measurement of the top quark pair $t\bar{t}$ production cross section in $p\bar{p}$ collisions at a center-of-mass energy of 1.96 TeV using 230 pb$^{-1}$ of data collected by the DO...
Search for large extra spatial dimensions in dimuon production with the D0 detector (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present the results of a search for the effects of large extra spatial dimensions in $p{\bar p}$ collisions at $\sqrt{s} =$ 1.96 TeV in events containing a pair of energetic muons. The data...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a measurement of the top quark pair $(t\bar{t})$ production cross section in $p\bar{p}$ collisions at a center-of-mass energy of 1.96 TeV using 230 pb$^{-1}$ of data collected by the DO...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a measurement of the top quark pair ($t\bar{t}$) production cross section ($\sigma_{t\bar{t}}$) in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV using 230 pb$^{-1}$ of data collected by the...
Search for single top quark production in ppbar collisions at $\sqrt{s}$=1.96 TeV (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a search for electroweak production of single top quarks in the s-channel and t-channel using neural networks for signal-background separation. We have analyzed 230 pb$^{-1}$ of data...
Search for right-handed W bosons in top quark decay (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a measurement of the fraction f+ of right-handed W bosons produced in top quark decays, based on a candidate sample of $t\bar{t}$ events in the lepton+jets decay mode. These data...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
A search for associated production of charginos and neutralinos is performed using data recorded with the D0 detector at a ppbar center-of-mass energy of 1.96 TeV at the Fermilab Tevatron Collider....
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
The WWgamma triple gauge boson coupling parameters are studied using p-pbar -> l nu gamma + X (l = e,mu) events at sqrt(s) = 1.96 TeV. The data were collected with the DO detector from an integrated...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present results from a search for WZ production with subsequent decay to l nu l'-bar l' (l and l'=electron or muon) using 0.30 fb^(-1) of data collected by the DO experiment between 2002 and 2004...
Search for neutral supersymmetric Higgs bosons in multijet events at $\sqrt{s}$ = 1.96 TeV (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We have performed a search for neutral Higgs bosons produced in association with bottom quarks in $p\bar{p}$ collisions, using 260 $pb^{-1}$ of data collected with the D0 detector in Run II of the...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a measurement of the Z\gamma production cross section and limits on anomalous ZZ\gamma and Z\gamma\gamma couplings for form-factor scales of Lambda = 750 and 1000 GeV. The measurement is...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present measurements of the inclusive production cross sections of the Upsilon(1S) bottomonium state in ppbar collisions at sqrt(s) = 1.96 TeV. Using the Upsilon(1S) to mu+mu- decay mode for a...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We report on a search for pair production of first-generation scalar leptoquarks (LQ) in ppbar collisions at sqrt(s)=1.96 TeV using an integrated luminosity of 252pb-1 collected at the Fermilab...
Search for anomalous heavy-flavor quark production in association with W bosons (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We search for anomalous production of heavy-flavor quark jets in association with a W bosons at the Fermilab Tevatron ppbar Collider in final states in which the heavy-flavor quark content is...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
Using the data collected with the DZero detector at sqrt(s)=1.96-TeV, for integrated luminosities of about 180 pb^{-1}, we have measured the ratio of inclusive cross sections for p+pbar->Z+bjet to...
Abazov, V.M., Abbott, R., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present measurements of the Lambda^0_b lifetime in the exclusive decay channel Lambda^0_{b}->J/psi Lambda^0, with J/psi to mu+ mu- and Lambda^0 to p pi-, the B^0 lifetime in the decay B^0 -> J/psi...
Measurement of the ratio of B$^+$ and B$^0$ meson lifetimes (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
The ratio of the B+ and B0 meson lifetimes was measured using data collected in 20022004 by the D0 experiment in Run II of the Fermilab Tevatron Collider. These mesons were reconstructed in...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present a search for W b \bar{b} production in p \bar{p} collisions at sqrt{s}=1.96 TeV in events containing one electron, an imbalance in transverse momentum, and two b-tagged jets. Using 174...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, D.L., Adams, M., ...
We present a measurement of the W boson pair-production cross section in p anti-p collisions at a center-of-mass energy of sqrt{s}=1.96 TeV. The data, collected with the Run II DO detector,...
Abazov, V.M., Abbott, R., Abolins, M., Acharya, B.S., Adams, M., Adams, T., ...
We present the results of a search for the flavor-changing neutral current decay B0_s -> mu+ mu- using a data set with integrated luminosity of 240 pb^{-1} of pp(bar) collisions at sqrt{s}=1.96 TeV...
Search for supersymmetry with gauge-mediated breaking in diphoton events at D0 (2005)
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, D.L., Adams, M., ...
We report the results of a search for supersymmetry (SUSY) with gauge-mediated breaking in the missing transverse energy distribution of inclusive diphoton events using 263 pb$^{-1}$ of data...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, D.L., Adams, M., ...
Using the exclusive decay B^0_s -> J/psi (mu+mu-) phi(K+K-), we report the most precise single measurement of the B^0_s lifetime. The data sample corresponds to an integrated luminosity of...
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, D.L., Adams, M., ...
Correlations in the azimuthal angle between the two largest transverse momentum jets have been measured using the D0 detector in pp-bar collisions at a center-of-mass energy sqrt(s)=1.96 TeV. The...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
We have studied hadronic events from e+e- annihilation data at centre-of-mass energies from 91 to 209 GeV. We present distributions of event shape observables and their moments at each energy and...
Measurement of $R_b$ in $e^+ e^-$ Collisions at 182 - 209 GeV (2004)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
Measurements of Rb, the ratio of the bbbar cross-section to the qqbar cross- section in e+e- collisions, are presented. The data were collected by the OPAL experiment at LEP at centre-of-mass...
Search for Radions at LEP2 (2004)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
A new scalar resonance, called the radion, with couplings to fermions and bosons similar to those of the Higgs boson, is predicted in the framework of Randall-Sundrum models, proposed solutions to...
Determination of the LEP Beam Energy using Radiative Fermion-pair Events, 2004 (2004)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
We present a determination of the LEP beam energy using "radiative return" fermion-pair events recorded at centre-of-mass energies from 183 GeV to 209 GeV. We find no evidence of a disagreement...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
Upper limits on the cross-section of the pair-production process e+e- -> h0A0 assuming 100% decays into hadrons, are derived from a new search for the h0A0 -> hadrons topology, independent of the...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
Events with a final state consisting of two or more photons and large missing transverse energy have been observed in e+e- collisions at centre-of-mass energies in the range 192 - 209 GeV using the...
Search for neutral Higgs bosons in CP-conserving and CP-violating MSSM scenarios (2004)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
This report summarizes the final results from the OPAL collaboration on searches for neutral Higgs bosons predicted by the Minimal Supersymmetric Standard Model (MSSM). CP-conserving and for the...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
Flavour inclusive, udsc and b fragmentation functions in unbiased jets, and flavour inclusive, udsc, b and gluon fragmentation functions in biased jets are measured in e+e- annihilations from data...
Measurement of the Strange Spectral Function in Hadronic $\tau$ Decays (2004)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
Tau Lepton decays with open strangeness in the final state are measured with the OPAL detector at LEP to determine the strange hadronic spectral function of the tau lepton. The decays tau- ->...
Study of Bose-Einstein Correlations in $e^{+}e^{-}\to W^{+}W^{-}$ events at LEP (2004)
Abbiendi, G, Ainsley, C, Åkesson, T, Alexander, G, Allison, J, Amaral, P, ...
Bose-Einstein correlation between like-sign charged-particle pairs in e+e- -> W+W- events recorded with the OPAL detector at LEP at centre-of-mass energies between 183 GeV and 209 GeV are studied....
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
Anomalous quartic couplings between the electroweak gauge bosons may contribute to the vv gamma gamma and qq gamma gamma final states produced in e+e- collisions. This analysis uses the LEP2 OPAL...
Search for Chargino and Neutralino Production at $\sqrt{s}$ = 192-209 GeV at LEP (2004)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
Approximately 438 pb-1 of e+e- data from the OPAL detector, taken with the LEP collider running at centre-of-mass energies of 192-209 Gev, are analyzed to search for evidence of chargino pair...
Abazov, V.M., Abbott, R., Abolins, M., Acharya, B.S., Adams, D.L., Adams, M., ...
We report the observation of the X(3872) in the J/psi pi+pi- channel, with J/psi decaying to mu+mu- in p-p(bar) collisions at sqrt(s) = 1.96 TeV. Using approximately 230 pb^-1 of data collected with...
Abazov, V.M., Abbott, R., Abolins, M., Acharya, B.S., Adams, D.L., Adams, M., ...
We report the observation of the X(3872) in the J/psi pi+pi- channel, with J/psi decaying to mu+mu- in p-p(bar) collisions at sqrt(s) = 1.96 TeV. Using approximately 230 pb^-1 of data collected with...
W Boson Polarisation at LEP2 (2003)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
Elements of the spin density matrix for W bosons in e+e- -> W+W- -> qqln events are measured from data recorded by the OPAL detector at LEP. This information is used calculate polarised differential...
Measurement of the partial widths of the Z into up- and down-type quarks (2003)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
Using the entire OPAL LEP1 on-peak Z hadronic decay sample, Z -> qbarq gamma decays were selected by tagging hadronic final states with isolated photon candidates in the electromagnetic calorimeter....
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
A search for the Higgsstrahlung process e+e- -> hZ is described, where the neutral Higgs boson h is assumed to decay into hadronic final states. In order to be sensitive to a broad range of models,...
Search for R-parity violating decays of sfermions at LEP (2003)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
A search for pair-produced scalar fermions under the assumption that R-parity is not conserved has been performed using data collected with the OPAL detector at LEP. The data samples analysed...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
We present the first experimental results based on the jet boost algorithm, a technique to select unbiased samples of gluon jets in e+e- annihilations, i.e. gluon jets free of biases introduced by...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
A study of Z-boson pair production in e+e- annihilation at center-of-mass energies between 190 GeV and 209 GeV is reported. Final states containing only leptons, (l+l-l+l- and l+l-nn), quark and...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
Cross-section and angular distributions for hadronic and lepton-pair final states in e+e- collisions at centre-of-mass energies between 189 GeV and 209 GeV, measured with the OPAL detector at LEP,...
A Study of $W^{+}W^{-}\gamma$ Events at LEP (2003)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
A study of W+W- events accomanied by hard photon radiation produced in e+e- collisions at LEP is presented. Events consistent with being two on-shell W bosons and an isolated photon are selected from...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
In total 1317 di-lepton events with significant missing transverse momentum were identified in a total data sample of 680 pb-1 collected at e+e- centre-of-mass energies ranging from 183 GeV to 209...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
A search for single production of doubly-charged Higgs bosons has been performed using 600.7 pb^-1 of e+e- collision data with sqrt(s)=189--209GeV collected by the OPAL detector at LEP. No evidence...
A study of charm production in beauty decays with the OPAL detector at LEP (2003)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
Using an inclusive method, BR(b -> D\bar{D}X) has been measured in hadronic Z^0 decays with the OPAL detector at LEP. The impact parameter significance of tracks opposite tagged b-jets is used to...
Measurement of charged current triple gauge boson couplings using W pairs at LEP (2003)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
Triple gauge boson couplings are measured from W-pair and single photon events recorded by the OPAL detector at LEP at center-of-mass energies between 183 - 209 GeV with a total integrated luminosity...
Abbiendi, G, Carter, A, De Wolf, E, McPherson, R A, Neal, H, Thomson, M, ...
Hadronic Z0 decays with identified electrons or muons have been used to measure the forward-backward asymmetries of e^+e^- --> Z0 --> bbbar and e^+e^- --> Z0 --> ccbar events. The asymmetries at...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
Gluon jets with a mean energy of 22 GeV and purity of 95% are selected from hadronic Z0 decay events produced in e+e- annihilations. A subsample of these jets is identified which exhibits a large gap...
Abbiendi, G, Ainsley, C, Alexander, G, Åkesson, P F, Allison, J, Amaral, P, ...
For the first time at LEP the production of prompt photons is studied in the collisions of quasi-real photons using the OPAL data taken at e+e- centre-of-mass energies between 183 GeV and 209 GeV....
Abbiendi, G, Ainsley, C, Alexander, G, Åkesson, P F, Allison, J, Amaral, P, ...
For the first time at LEP the production of prompt photons is studied in the collisions of quasi-real photons using the OPAL data taken at e+e- centre-of-mass energies between 183 GeV and 209 GeV....
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
A search for pair-produced leptoquarks is performed using e+e- collision events collected by the OPAL detector at LEP at centre-of-mass energies between 189 and 209 GeV. The data sample corresponds...
Abbiendi, G, Ainsley, C, Alexander, G, Allison, J, Amaral, P, Anagnostou, G, ...
A search for stable and long-lived massive particles of electric charge |Q/e|=1 or fractional charges of 2/3, 4/3, and 5/3 is reported using data collected by the OPAL detector at LEP, at...
Test of non-commutative QED in the process $e^{+}e^{-} \to \gamma \gamma$ at LEP (2003)
Abbiendi, G, Ainsley, C, Alexander, G, Allison, J, Amaral, P, Anagnostou, G, ...
Non-communicative QED would lead to deviations from the Standard Model depending on a new energy scale $\Delta_{NC}$ and a unique direction in space defined by two angles $\eta$ and $\xi$. Here in...
Bose-Einstein Correlations of $\pi^{0}$ Pairs from Hadronic $Z^{0}$ Decays (2003)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Amaral, P, ...
We observed Bose-Einstein correlation in pi0 pairs produced in Z0 decays using the data sample collected by the OPAL detector at LEP 1 from 1991 to 1995. Using a static Gaussian picture for the pion...
A Measurement of Semileptonic B Decays to Narrow Orbitally-Excited Charm Mesons (2003)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Amaral, P, ...
The decay chain b -> Bbar -> D^{**0} l nu X, D^{**0} -> D^{*+} pi^-, D^{*+} -> D^0 pi^+, D^0 ->(Kpi or K3pi) is identified in a sample of 3.9 million hadronic Z decays collected with the OPAL...
Di-Jet Production in Photon-Photon colisions at $\sqrt{s_{ee}}$ from 189 to 209 GeV (2003)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Amaral, P, ...
Di-jet producion is studied in collisions of quasi-real photons at e+e- centre- of-mass energies sqrt(s)ee from 189 to 209 GeV at LEP. The data were collected with the OPAL detector. Jets are...
Dijet production in photon-photon collisions at s(ee)**(1/2) from 189-GeV to 209-GeV (2003)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Bose-Einstein correlations of pi0 pairs from hadronic Z0 decays (2003)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
A Study of charm production in beauty decays with the OPAL detector at LEP (2003)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Measurement of charged current triple gauge boson couplings using W pairs at LEP (2003)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
A Study of W+ W- gamma events at LEP (2003)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Search for R parity violating decays of scalar fermions at LEP (2003)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Measurement of the partial widths of the Z into up and down type quarks (2003)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Search for chargino and neutralino production at s**(1/2) = 192-GeV to 209 GeV at LEP (2003)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Test of noncommutative QED in the process e+ e- ---> gamma gamma at LEP (2003)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
W boson polarization at LEP2 (2003)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
A Measurement of the $\tau^{-}\to \mu^{-}\overline{\nu}_{\mu}\nu_{\tau}$ Branching Ratio (2002)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Amaral, P, ...
The tau -> mu nu nu branching ratio has been measured using data collected from 1990 to 1995 by the OPAL detector at the LEP collider. The resulting value of B(tau -> mu nu nu) = 0.1734 +-...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Amaral, P, ...
We have measured the mean charged particle multiplicities separately for bbbar, ccbar and light quark (uubar, ddbar, ssbar) initiated events produced in e+e- annihilations at LEP. The data were...
Multi-Photon Production in $e^{+}e^{-}$ collisions at $\sqrt{s}$ = 181 - 209 GeV (2002)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Amaral, P, ...
The process e+e- -> gamma gamma (gamma) is studied using data collected by the OPAL detector at LEP between the years 1997 and 2000. The data set corresponds to an integrated luminosity of 672.3pb-1...
Search for Nearly Mass-Degenerate Charginos and Neutralinos at LEP (2002)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Amaral, P, ...
A search was performed for charginos with masses close to the mass of the lightest neutralino in e+e- collisions at centre-of-mass energies of 189-209 GeV recorded by the OPAL detector at LEP. Events...
Search for the Standard Model Higgs Boson with the OPAL Detector at LEP (2002)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Amaral, P, ...
This paper summarises the search for the Standard Model Higgs boson in e+e- collisions at centre-of-mass energies up to 209 GeV performed by the OPAL Collaboration at LEP. The consistency of the data...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Amaral, P, ...
The b quark forward-backward asymmetry has been measured using hadronic Z0 decays collected by the OPAL experiment at LEP. Z0 -> bbbar decays were selected using a combination of secondary vertex and...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, Amaral, P, ...
We have analysed the data collected by OPAL at centre-of-mass energies between 189 and 209 GeV searching for Higgs boson candidates from the process e/sup +/e/sup -/ to h/sup 0/Z/sup 0/ followed by...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Amaral, P, ...
The exclusive production of proton-antiproton pairs in the collisions of two quasi-real photons had been studied using data taken at sqrt(s)_ee=183 GeV and 189 GeV with the OPAL detector at LEP....
Charged Particle Momentum Spectra in $e^+ e^-$ annihilation at $\sqrt{s}$ = 192-209 GeV (2002)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Amaral, P, ...
Charged particle momentum distributions are studied in the reaction e+e- -> hadrons, using data collected with the OPAL detector at centre-of-mass energies from 192 GeV to 209 GeV. The data...
Search for scalar top and scalar bottom quarks at LEP (2002)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Amaral, P, ...
Searches for a scalar top quark and a scalar bottom quark have been performed using a data sample of 438 pb-1 at centre-of-mass energies of sqrt(s) = 192 - 209 GeV collected with the OPAL detector at...
Measurement of Neutral-Current Four-Fermion Production at LEP2 (2002)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Amaral, P, ...
Four-fermion final states qqbar e+e- and qqbar mu+mu- from neutral-current interactions in e+e- collisions are studied in the OPAL detector at LEP at centre-of-mass energies from 183 GeV to 209 GeV....
Inclusive Analysis of the b Quark Fragmentation Function in Z Decays at LEP (2002)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Amaral, P, ...
A study of b quark hadronisation is presented using inclusively reconstructed B hadrons in about four million hadronic Z decays recorded in 1992-2000 with the OPAL detector at LEP. The data are...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Amaral, P, ...
A search is performed for production of short-lived particles in e+e- -> XY, with X -> gamma gamma and Y -> ffbar, for scalar X and scalar or vector Y. Model-independent limits in the range of 25-60...
Decay-mode independent searches for new scalar bosons with the OPAL detector at LEP (2002)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Amaral, P, ...
This paper describes topological searches for neutral scalar bosons S0 produced in association with a Z0 boson via the Bjorken process e+e- -> S0Z0 at centre-of-mass energies of 91 GeV and 183-209...
Measurement of the Charm structure Function $F_{2}^{\gamma},c$ of the Photon at LEP (2002)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Amaral, P, ...
The production of charm quarks is studied in deep-inelastic electron-photon scattering using data recorded by the OPAL detector at LEP at normal e+e- centre-of-mass energies from 183 to 209 GeV. The...
First data from Dzero in Run 2 (2002)
Run 2 of the Tevatron collider at Fermilab has begun in the spring of 2001. During its first year of operation the Tevatron has delivered a luminosity of approximately 30/pb to the Dzero experiment....
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
A novel method of determining the mass of the W boson in the W+W- -> lnu lnu channel is presented and applied to 667pb^-1 of data recorded at the center-of- mass energies in the range 183-207 GeV...
Measurement of the Hadronic Photon Structure Function $F_{2}^{\gamma}$ at LEP2 (2002)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
The hadronic structure of the photon F2gamma is measured as a function of Bjorken x and of the photon virtuality Q2 using deep-inelastic scattering data taken by the OPAL detector at LEP at e+e-...
A Measurement of the tau- ---> mu- anti-nu(mu) nu(tau) branching ratios (2002)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
A Measurement of semileptonic B decays to narrow orbitally excited charm mesons (2002)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Charged particle momentum spectra in e+ e- annihilation at s**(1/2) = 192-GeV to 209-GeV (2002)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Measurement of the charm structure function F2(c)(gamma) of the photon at LEP (2002)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Decay mode independent searches for new scalar bosons with the OPAL detector at LEP (2002)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Inclusive analysis of the b quark fragmentation function in Z decays at LEP (2002)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Measurement of neutral current four fermion production at LEP-2 (2002)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Charged particle multiplicities in heavy and light quark initiated events above the Z0 peak (2002)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Measurement of the hadronic photon structure function F**gamma(2) at LEP-2 (2002)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Measurement of the mass of the W boson in e+ e- collisions using the fully leptonic channel (2002)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Search for charged excited leptons in e+ e- collisions at s**(1/2) = 183-GeV to 209-GeV (2002)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Search for a low mass CP odd Higgs boson in e+ e- collisions with the OPAL detector at LEP-2 (2002)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Multiphoton production in e+ e- collisions at s**(1/2) = 181-GeV to 209-GeV (2002)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Search for scalar top and scalar bottom quarks at LEP (2002)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Search for nearly mass degenerate charginos and neutralinos at LEP (2002)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Search for the standard model Higgs boson with the OPAL detector at LEP (2002)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Search for Leptoquarks in Electron-Photon Scattering at $\sqrt{s_{ee}}$ up to 209 GeV at LEP (2001)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
Searches for first generation scalar and vector leptoquarks, and for squarks in R-parity violating SUSY models with the direct decay of the squark into Standard Model particles, have been performed...
Search for Doubly Charged Higgs Bosons with the OPAL detector at LEP (2001)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
A search for pair-produced doubly charged Higgs bosons has been performed using data samples corresponding to an integrated luminosity of about 614 pb-1 collected with the OPAL detector at LEP at...
Particle multiplicity of unbiased gluon jets from $e^+ e^-$ three-jet events (2001)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
The charged particle multiplicities of two- and three-jet events from the reaction e+e- -> Z0 -> hadrons are measured for Z0 decays to light quark (uds) flavors. Using recent theoretical expressions...
Search for Yukawa Production of a Light Neutral Higgs Boson at LEP (2001)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
Within a Two-Higgs-Doublet Model (2HDM) a search for a light Higgs boson in the mass range of 4-12 GeV has been performed in the Yukawa process e+e- -> b bbar A/h -> b bbar tau+tau-, using the data...
Genuine Correlations of Like-Sign Particles in Hadronic $Z^0$ Decays (2001)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
Correlations among hadrons with the same electric charge produced in Z0 decays are studied using the high statistics data collected from 1991 through 1995 with the OPAL detector at LEP. Normalized...
Search for Single Top Quark Production at LEP2 (2001)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
A search for single top quark production via flavour changing neutral currents (FCNC) was performed with data collected by the OPAL detector at the e+e- collider LEP. Approximately 600 pb-1 of data...
Measurement of the Hadronic Cross-Section for the Scattering of Two Virtual Photons at LEP (2001)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
The interaction of virtual photons is investigated using the reaction e+e- -> e+e- hadrons based on data taken by the OPAL experiment at e+e- centre-of-mass energies sqrt(s_ee)=189-209 GeV, for W>5...
Measurement of $Z/\gamma^{*}$ production in Compton scattering of quasi-real photons (2001)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
The process e+ e- -> e+ e- Z/gamma* is studied with the OPAL detector at LEP at a centre of mass energy of sqrt(s) = 189 GeV. The cross-section times the branching ratio of the Z/gamma* decaying into...
Determination of the b Quark Mass at the Z Mass Scale (2001)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
In hadronic decays of Z bosons recorded with the OPAL detector at LEP, events containing b quarks were selected using the long lifetime of b flavoured hadrons. Comparing the 3-jet rate in b events...
Search for Lepton Flavour Violation in $e^+e^-$ Collisions at $\sqrt{s}$ = 189 - 209 GeV (2001)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
We search for lepton flavour violating events (e mu, e tau and mu tau) that could be directly produced in e+e- annihilations, using the full available data sample collected with the OPAL detector at...
Measurement of the Branching Ratio for the Process $b \to \tau^{-}\overline{\nu}_{\tau}X$ (2001)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
The inclusive branching ratio for the process b -> tau nu X has been measured using hadronic Z decays collected by the OPAL experiment at LEP in the years 1992-2000. The result is: BR(b -> tau nu X)...
Angular Analysis of the Muon Pair Asymmetry at LEP 1 (2001)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
Data on muon pair production obtained by the OPAL collaboration at centre of mass energies near the Z peak are analysed. Small angular mismatches between the directions of the two muons are used to...
Measurement of |$V_{ub}$| using b hadron semileptonic decays (2001)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
The magnitude of the CKM matrix element Vub is determined by measuring the inclusive charmless semileptonic branching fraction of beauty hadrons at OPAL based on b -> Xu l nu event topology and...
Abbiendi, G, Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, ...
A search for first generation scalar and vector leptoquarks (LQ) as well as for squarks in R-parity violating SUSY models has been performed using e+e- collisions collected with the OPAL detector at...
A Combination of Preliminary Electroweak Measurements and Constraints on the Standard Model (2001)
Abbaneo, D., Alcaraz, J., Antilogus, P., Arcelli, S., Bamabade, P., Barberio, E., ...
Precision Neutral Current Asymmetry Parameter Measurements from the Tau Polarization at LEP (2001)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
Measurements of the tau lepton polarization and forward-backward polarization asymmetry near the Z resonance using the OPAL detector are described. The measurements are based on analyses of tau -> e...
Abbaneo, D, Alcaraz, J, Antilogus, P, Arcelli, S, Bambade, P, Barberio, E, ...
This note presents a combination of published and preliminary electroweak results from the four LEP collaborations and the SLD collaboration which were prepared for the 2000 summer conferences....
Measurement of the Branching Ratio for $D_{s} \to \tau\nu_{\tau}$ Decays (2001)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
Using about 3.9 million hadronic Z decays from e+e- collisions recorded by the OPAL detector at LEP at centre-of-mass energies near MZ the branching ratio for the decay D_s -> tau nu_tau has been...
A Simultaneous Measurement of the QCD Colour Factors and the Strong Coupling (2001)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
Using data from e+e- annihilation into hadrons, taken with the OPAL detector at LEP at the Z pole between 1991 and 1995, we performed a simultaneous measurement of the colour factors of the...
A Search for a Narrow Radial Excitation of the $D^{*\pm}$ Meson (2001)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
A sample of 3.73 million hadronic Z decays, recorded with the OPAL detector at LEP in the years 1991-95, has been used to search for a narrow resonance corresponding to the decay of the D*'+/-(2629)...
Report of the QCD working group (2001)
Ballestrero, A., Grunewald, M W., Passarino, G., Accomando, E., Bambade, P., Bardin, D Yu., ...
en cours
Four-Fermion Production in Electron-Positron Collisions / (2001)
Grunewald, M W., Passarino, G., Accomando, E., Ballestrero, A., Bambade, P., Bardin, D Yu., ...
This report summarises the results of the four-fermion working group of the LEP2-MC workshop, held at CERN from 1999 to 2000. Recent developments in the calculation of four-fermion processes in...
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
A search for the Standard Model Higgs boson has been performed with the OPAL detector at LEP based on the full data sample collected at sqrt(s) = 192-209 GeV in 1999 and 2000, corresponding to an...
A Simultaneous measurement of the QCD color factors and the strong coupling (2001)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, PF, Alexander, G, Allison, J, ...
A Search for a narrow radial excitation of the D*+- meson (2001)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Determination of the b quark mass at the Z mass scale (2001)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Angular analysis of the muon pair asymmetry at LEP I (2001)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Genuine correlations of like - sign particles in hadronic Z0 decays (2001)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Measurement of the branching ratio for D(s)- ---> tau- anti-nu(tau) decays (2001)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Precision neutral current asymmetry parameter measurements from the tau polarization at LEP (2001)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Measurement of |V(ub)| using b hadron semileptonic decay (2001)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Measurement of Z / gamma* production in Compton scattering of quasi-real photons (2001)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Measurement of the branching ratio for the process b ---> tau- anti-nu(tau) X (2001)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Measurement of the hadronic cross-section for the scattering of two virtual photons at LEP (2001)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Particle multiplicity of unbiased gluon jets from e+ e- three jet events (2001)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Search for lepton flavor violation in e+ e- collisions at s**(1/2) = 189-GeV - 209-GeV (2001)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Search for single top quark production at LEP-2 (2001)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Search for Yukawa production of a light neutral Higgs boson at LEP (2001)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Search for doubly charged Higgs bosons with the OPAL detector at LEP (2001)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Search for leptoquarks in electron photon scattering at s(e e)**(1/2) up to 209-GeV at LEP (2001)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
A Combination of Preliminary Electroweak Measurements and Constraints on the Standard Model (2001)
Abbaneo, D., Alcaraz, J., Antilogus, P., Arcelli, S., Bamabade, P., Barberio, E., ...
A Combination of Preliminary Electroweak Measurements and Constraints on the Standard Model (2001)
Abbaneo, D., Alcaraz, J., Antilogus, P., Arcelli, S., Bamabade, P., Barberio, E., ...
Precise Determination of the Z Resonance Parameters at LEP: Zedometry (2000)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
This final analysis of hadronic and leptonic cross-sections and of leptonic forward-backward asymmetries in e+e- collisions with the OPAL detector makes use of the full LEP1 data sample comprising...
A Study of $B_{s}$ Meson Oscillation Using $D_{s}^{-}$-Lepton Correlations (2000)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
From data collected around the Z resonance by the OPAL detector at LEP a sample of Bs decays was obtained using Ds^-l^+ combinations, where the Ds^- was fully reconstructed in the phi pi-, K*0K- and...
Charged Multiplicities in Z Decays into u, d, and s Quarks (2000)
Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, Anagnostou, G, ...
About 4.4 million hadronic decays of Z bosons, recorded by the OPAL detector at LEP at a centre-of-mass energy of around sqrt(s) = 91.2 GeV, are used to determine the mean charged particle...
Abbiendi, G, Ackerstaff, K, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, ...
The rates are measured per hadronic Z decay for gluon splitting to bb(bar) quark pairs, g_bb, and of events containing two bb(bar) quark pairs, g_4b, using a sample of four-jet events selected from...
Abbiendi, G, Abbiendi, G, Ackerstaff, K, Ainsley, C, Alexander, Gideon, Allison, J, ...
From about 4 million hadronic Z decays recorded by the OPAL detector on and near to the Z resonance, we select a sample of more than 570000 inclusively reconstructed B mesons. Orbitally-excited...
Abbiendi, G, Ackerstaff, K, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, ...
The lifetime and oscillation frequency of the B0 meson has been measured using B0->D*+l-v decays recorded on the Z0 peak with the OPAL detector at LEP. The D*+ -> D0pi+ decays were reconstructed...
Abbiendi, G, Ackerstaff, K, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, ...
A measurement of triple gauge boson couplings is presented, based on W-pair data recorded by the OPAL detector at LEP during 1998 at a centre-of-mass energy of 189 GeV with an integrated luminosity...
Abbiendi, G, Ackerstaff, K, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, ...
From a data sample of 183 pb^-1 recorded at a center-of-mass energy of roots = 189 GeV with the OPAL detector at LEP, 3068 W-pair candidate events are selected. Assuming Standard Model W boson decay...
A Measurement of the Rate of Charm Production in W Decays (2000)
Abbiendi, G, Ackerstaff, K, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, ...
Using data recorded at centre-of-mass energies around 183 GeV and 189 GeV with the OPAL detector at LEP, the fundamental coupling of the charm quark to the W boson has been studied. The ratio Rc^W =...
Abbiendi, G, Ackerstaff, K, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, ...
Measurements are presented of the polarisation of W+W- boson pairs produced in e+e- collisions, and of CP-violating WWZ and WWGamma trilinear gauge couplings. The data were recorded by the OPAL...
A Study of One-Prong Tau Decays with a Charged Kaon (2000)
Abbiendi, G, Ackerstaff, K, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, ...
From an analysis of the ionisation energy loss of charged particles selected from 110326 e+e- -> tau+tau- candidates recorded by the OPAL detector at e+e- centre-of-mass energies near the Z0...
Measurement of the Mass and Width of the W Boson in $e^{+}e^{-}$ Collisions at 189 GeV (2000)
Abbiendi, G, Ackerstaff, K, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, ...
The mass and width of the W boson are determined in e+e- collisions at LEP using 183 pb^-1 of data recorded at a centre-of-mass energy roots=189 GeV with the OPAL detector. The invariant mass...
Two Higgs Doublet Model and Model Independent Interpretation of Neutral Higgs Boson Searches (2000)
Abbiendi, G, Ackerstaff, K, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, ...
Searches for the neutral Higgs bosons h0 and A0, are used to obtain limits on the Type II Two Higgs Doublet Model (2HDM(II)) with no CP-violation in the Higgs sector and no additional particles...
Abbiendi, G, Ackerstaff, K, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, ...
The inclusive production rate of phi mesons from the decay of b hadrons produced in Z0 decays was measured to be Br(b->phi+X) = 0.0282+-0.0013(stat.)+-0.0019(syst.), using data collected by the OPAL...
Abbiendi, G, Ackerstaff, K, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, ...
The data recorded at a centre-of-mass energy of 189GeV by the OPAL detector at LEP are used to search for trilinear couplings of the neutral gauge bosons in the process e+e- --> Z-gamma. The...
Multiplicities of $\pi^{0}$, $\eta$, $K^{0}$ and of charged particles in quark and gluon jets (2000)
Abbiendi, G, Ackerstaff, K, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, ...
We compared the multiplicities of pizero, eta, Kzero and of charged particles in quark and gluon jets in 3-jet events, as measured by the OPAL experiment at LEP. The comparisons were performed for...
Measurement of the Low-x Behaviour of the Photon Structure Function $F2-\gamma$ (2000)
Abbiendi, G, Ackerstaff, K, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, ...
The photon structure function F2-gamma(x,Q**2) has been measured using data taken by the OPAL detector at centre-of-mass energies of 91Gev, 183Gev and 189Gev, in Q**2 ranges of 1.5 to 30.0 GeV**2...
Abbiendi, G, Ackerstaff, K, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, ...
Searches for final states expected in models with light gravitinos have been performed, including experimental topologies with multi-leptons with missing energy, leptons and photons with missing...
Four-Fermion Production in Electron-Positron Collisions (2000)
Grünewald, M W, Passarino, G, Accomando, E, Ballestrero, A, Bambade, P, Bardin, Dimitri Yuri, ...
This report summarises the results of the four-fermion working group of the LEP2-MC workshop, held at CERN from 1999 to 2000. Recent developments in the calculation of four-fermion processes in...
Four-Fermion Production in Electron-Positron Collisions (2000)
Gruenewald, Martin W., Passarino, Giampiero, Accomando, E., Ballestrero, A., Bambade, P., Bardin, D., ...
This report summarises the results of the four-fermion working group of the LEP2-MC workshop, held at CERN from 1999 to 2000. Recent developments in the calculation of four-fermion processes in...
A measurement of the $\tau$ mass and the first CPT test with $\tau$ leptons (2000)
Abbiendi, G, Ackerstaff, K, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, ...
We measure the mass of the tau lepton to be 1775.1+-1.6(stat)+-1.0(sys t.) MeV using tau pairs from Z0 decays. To test CPT invariance we compare the masses of the positively and negatively charged...
Photonic events with missing energy in $e^{+}e^{-}$ collisions at $\sqrt{s}=189 GeV$ (2000)
Abbiendi, G, Ackerstaff, K, Ainsley, C, Åkesson, P F, Alexander, Gideon, Allison, J, ...
Photonic events with large missing energy have been observed in e+e- collisions at a centre-of-mass energy of 189GeV using the OPAL detector at LEP. Results are presented for event topologies...
Z boson pair production in $e^{+}e^{-}$ collisions at $\sqrt{s}$ = 183 and 189 GeV (2000)
Abbiendi, G, Ackerstaff, K, Åkesson, P F, Alexander, Gideon, Allison, J, Anderson, K J, ...
A study of Z boson pair production in e+e- annihilation at center-of-mass energies near 183 GeV and 189 GeV is reported. Final states containing only leptons, (l+l-l+l- and l+l-nu nubar), quark and...
Measurement of |$V_{cb}$| using $\overline{B}^{0} \to D^{*+}l^{-}\overline{\nu}$ decays (2000)
Abbiendi, G, Ackerstaff, K, Åkesson, P F, Alexander, Gideon, Allison, J, Anderson, K J, ...
The magnitude of the Cabibbo-Kobayashi-Maskawa matrix element Vcb has been measured using B0 to D*l nu decays recorded on the Z0 peak using the OPAL detector at LEP. The D* to D0 pi+ decays were...
Transverse and Longitudinal Bose Einstein Correlations in hadronic $Z^0$ Decays (2000)
Abbiendi, G, Ackerstaff, K, Åkesson, P F, Alexander, Gideon, Allison, J, Anderson, K J, ...
Bose-Einstein correlations in pairs of identical charged pions produced in asample of 4.3 million Z0 hadronic decays are studied as a function of the threecomponents of the momentum difference,...
Abbiendi, G, Ackerstaff, K, Åkesson, P F, Alexander, Gideon, Allison, J, Anderson, K J, ...
The cross-section ratio Rb=sigma(e+e- to b-antib)/sigma(e+e- to q-antiq) andthe bottom and charm forward-backward asymmetries AFB^b and AFB^c are measuredusing event samples collected by the OPAL...
Search for new Physics in rare B Decays (2000)
Abbiendi, G, Ackerstaff, K, Åkesson, P F, Alexander, Gideon, Allison, J, Anderson, K J, ...
A search for the decay B+- to K+-K+-pi-+ was performed using data collected by the OPAL detector at LEP. These decays are strongly suppressed in the Standard Model but could occur with a higher...
QCD studies with $e^{+}e^{-}$ annihilation data at 172-189 GeV (2000)
Abbiendi, G, Ackerstaff, K, Åkesson, P F, Alexander, Gideon, Allison, J, Anderson, K J, ...
We have studied hadronic events from e+e- annihilation data at centre-of-mass energies of sqrt{s}=172, 183 and 189 GeV. The total integrated luminosity of the three samples, measured with the OPAL...
Search for new Physics in rare B Decays (2000)
Abbiendi, G, Ackerstaff, K, Åkesson, P F, Alexander, Gideon, Allison, J, Anderson, K J, ...
A search for the decay B+- to K+-K+-pi-+ was performed using data collected by the OPAL detector at LEP. These decays are strongly suppressed in the Standard Model but could occur with a higher...
Leading Particle Production in Light Flavour Jets (2000)
Abbiendi, G, Ackerstaff, K, Åkesson, P F, Alexander, Gideon, Allison, J, Anderson, K J, ...
The energy distribution and type of the particle with the highest momentum in quark jets are determined for each of the five quark flavours making only minimal model assumptions. The analysis is...
Pfeifenschneider, P, Biebel, O, Movilla-Fernández, P A, Abbiendi, G, Ackerstaff, K, Åkesson, P F, ...
We employ data taken by the JADE and OPAL experiments for an integrated QCD study in hadronic e+e- annihilations at c.m.s. energies ranging from 35 GeV through 189 GeV. The study is based on...
Search for Unstable Heavy and Excited Leptons at LEP2 (2000)
Abbiendi, G, Ackerstaff, K, Åkesson, P F, Alexander, Gideon, Allison, J, Anderson, K J, ...
Searches for unstable neutral and charged heavy leptons, N and L+-, and for excited states of neutral and charged leptons, nu*, e*, mu*, and tau*, have been performed in e+e- collisions using data...
Abbiendi, G, Ackerstaff, K, Åkesson, P F, Alexander, Gideon, Allison, J, Anderson, K J, ...
Bose-Einstein correlations in pairs of charged kaons produced in a sample of 3.9 million hadronic Z0 decays have been measured with the OPAL experiment at LEP. Charged kaons were identified in the...
A Measurement of the rate of charm production in W decays (2000)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Ainsley, C, Akesson, P F, Alexander, G, ...
Bose-Einstein correlations in K+- K+- pairs from Z0 decays into two hadronic jets (2000)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Akesson, P F, Alexander, G, Allison, J, ...
A Measurement of the tau mass and the first CPT test with tau leptons (2000)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Ainsley, C, Akesson, P F, Alexander, G, ...
First measurement of the inclusive branching ratio of b hadrons to phi mesons in Z0 decays (2000)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Ainsley, C, Akesson, P F, Alexander, G, ...
A Study of one prong tau decays with a charged kaon (2000)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Ainsley, C, Akesson, P F, Alexander, G, ...
Charged multiplicities in Z decays into u, d, and s quarks (2000)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
A Study of B(s) meson oscillation using D(s)- lepton correlations (2000)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Measurement of the low x behavior of the photon structure function F(2)gamma (2000)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Ainsley, C, Akesson, P F, Alexander, G, ...
Measurement of the mass and width of the W boson in e+ e- collisions at 189-GeV (2000)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Ainsley, C, Akesson, P F, Alexander, G, ...
Measurement of |V(cb)| using anti-B0 ---> D*+ lepton- anti-neutrino decays (2000)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Akesson, P F, Alexander, G, Allison, J, ...
Photonic events with missing energy in e+ e- collisions at S**(1/2) = 189-GeV (2000)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Ainsley, C, Akesson, P F, Alexander, G, ...
Multiplicities of pi0, eta, K0 and of charged particles in quark and gluon jets (2000)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Ainsley, C, Akesson, P F, Alexander, G, ...
Precise determination of the Z resonance parameters at LEP: 'Zedometry' (2000)
OPAL Collaboration, Abbiendi, G, Ainsley, C, Akesson, P F, Alexander, G, Allison, J, ...
Transverse and longitudinal Bose Einstein correlations in hadronic Z0 decays (2000)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Akesson, P F, Alexander, G, Allison, J, ...
Searches for prompt light gravitino signatures in e+ e- collisions at S**(1/2) = 189-GeV (2000)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Ainsley, C, Akesson, P F, Alexander, G, ...
Two Higgs doublet model and model independent interpretation of neutral Higgs boson searches (2000)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Ainsley, C, Akesson, P F, Alexander, G, ...
W+ W- production cross-section and W branching fractions in e+ e- collisions at 189-GeV (2000)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Ainsley, C, Akesson, P F, Alexander, G, ...
Z boson pair production in e+ e- collisions at S**(1/2) = 183-GeV and 189-GeV (2000)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Akesson, P F, Alexander, G, Allison, J, ...
Report of the QCD working group (2000)
Ballestrero, A., Grunewald, M W., Passarino, G., Accomando, E., Bambade, P., Bardin, D Yu., ...
en cours
Four-Fermion Production in Electron-Positron Collisions / (2000)
Grunewald, M W., Passarino, G., Accomando, E., Ballestrero, A., Bambade, P., Bardin, D Yu., ...
This report summarises the results of the four-fermion working group of the LEP2-MC workshop, held at CERN from 1999 to 2000. Recent developments in the calculation of four-fermion processes in...
Report of the QCD working group (2000)
Ballestrero, A., Grunewald, M W., Passarino, G., Accomando, E., Bambade, P., Bardin, D Yu., ...
en cours
Four-Fermion Production in Electron-Positron Collisions / (2000)
Grunewald, M W., Passarino, G., Accomando, E., Ballestrero, A., Bambade, P., Bardin, D Yu., ...
This report summarises the results of the four-fermion working group of the LEP2-MC workshop, held at CERN from 1999 to 2000. Recent developments in the calculation of four-fermion processes in...
$\tau$ decays with neutral kaons (1999)
Abbiendi, G, Ackerstaff, K, Åkesson, P F, Alexander, Gideon, Allison, J, Anderson, K J, ...
The branching ratio of the tau lepton to a neutral K meson is measured from a sample of approximately 200,000 tau decays recorded by the OPAL detector at centre-of-mass energies near the Z0...
Abbiendi, G, Ackerstaff, K, Åkesson, P F, Alexander, Gideon, Allison, J, Anderson, K J, ...
The inclusive production of D*+- mesons in photon-photon collisions has been measured using the OPAL detector at LEP at e+e- centre-of-mass energies of 183 and 189GeV. The D* mesons are reconstructed...
Abbiendi, G, Ackerstaff, K, Åkesson, P F, Alexander, Gideon, Allison, J, Anderson, K J, ...
A study of W+W- events accompanied by hard photon radiation produced in e+e- collisions at LEP is presented. Events consistent with two on-shell W-bosons and an isolated photon are selected from...
Precision Luminosity for $Z^{0}$ Lineshape Measurements with a Silicon-Tungsten Calorimeter (1999)
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Anderson, K J, Anderson, S, ...
The measurement of small-angle Bhabha scattering is used to determine the luminosity at the OPAL interaction point for the LEP I data recorded between 1993 and 1995. The measurement is based on the...
Search for Chargino and Neutralino Production at $\sqrt{s} = 189 GeV$ at LEP (1999)
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Anderson, K J, Anderson, S, ...
A search for charginos and neutralinos, predicted by supersymmetric theories, is performed using a data sample of 182.1 pb-1 taken at a centre-of-mass energy of 189 GeV with the OPAL detector at LEP....
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Anderson, K J, Anderson, S, ...
A selection of di-lepton events with significant missing transverse momentum has been performed using a total data sample of 237.4 pb-1 at e+e- centre-of-mass energies of 183 GeV and 189 GeV. The...
A Study of Three-Prong $\tau$ Decays with Charged Kaons (1999)
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Anderson, K J, Anderson, S, ...
From an analysis of the ionisation energy loss of charged particles selected from a sample of 147926 e+e- -> tau+tau- candidates recorded in the OPAL detector at e+e- centre-of-mass energies near the...
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Anderson, K J, Anderson, S, ...
A search for pair-produced leptoquarks has been performed using a sample of e+e- collision events collected by the OPAL detector at LEP at e+e- centre-of-mass energies of about 183 GeV. The data...
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Anderson, K J, Anderson, S, ...
Cross-sections and angular distributions for hadronic and lepton pair final states in e+e- collisions at a centre-of-mass energy near 189 GeV, measured with the OPAL detector at LEP, are presented...
Search for Neutral Higgs Bosons in $e^{+}e^{-}$ Collisions at $\sqrt{s} \sim$ 189 GeV (1999)
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Anderson, K J, Anderson, S, ...
A search for neutral Higgs bosons has been performed with the OPAL detector at LEP, using approximately 170 pb-1 of e+e- collision data collected at sqrt(s)~189GeV. Searches have been performed for...
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Anderson, K J, Anderson, S, ...
The rate of secondary charm-quark-pair production has been measured in 4.4 million hadronic Z0 decays collected by OPAL. By selecting events with three jets and tagging charmed hadrons in the gluon...
Multi-photon production in $e^{+}e^{-}$ collisions at $\sqrt{s}$ = 189 GeV (1999)
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Anderson, K J, Anderson, S, ...
The process e+e- to 2 (or 3) gammas is studied using data recorded with the OPAL detector at LEP. The data sample taken at a centre-of-mass energy of 189 GeV corresponds to a total integrated...
A study of $B^{0}_{s}$ meson oscillation using hadronic $Z^{0}$ decays containing leptons (1999)
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Altekamp, N, Anderson, K J, ...
A sample of Z decays containing b-flavoured hadrons is tagged using leptons, and events having precise proper time measurements are selected. These events are used to study Bs oscillations. using the...
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Altekamp, N, Anderson, K J, ...
A search is described for the generic process e+e- to X Y, where X is a neutral heavy scalar boson decaying into a pair of photons, and Y is a neutral heavy boson (scalar or vector) decaying into a...
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Altekamp, N, Anderson, K J, ...
The helicity density matrix elements rho[00] of rho(770)+- and omega(782) mesons produced in Z decays have been measured using the OPAL detector at LEP. Over the measured meson energy range, the...
Measurements of inclusive semileptonic branching fractions of b hadrons in $Z^{0}$ decays (1999)
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Altekamp, N, Anderson, K J, ...
A measurement of inclusive semileptonic branching fractions of b hadrons produced in Z decays is presented. An enriched Z -> bbbar sample is obtained with a lifetime flavour-tagging technique. The...
Total Hadronic Cross-Section of Photon-Photon Interactions at LEP (1999)
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Altekamp, N, Anderson, K J, ...
The total hadronic cross-section sigma_gg(W) for the interaction of real photons, gg->hadrons, is measured for gg centre-of-mass energies 10 e+e- hardrons, using a luminosity function for the photon...
Alexandrov, Yu A, Angelini, C, Barberis, D, Ceradini, F, Dameri, M, Darbo, G, ...
Charmonium production by 350~GeV/$c$ negative pions incident on tungsten, copper and silicon has been studied in the WA92 experiment. \jp\ and \pp\ mesons are identified through their decays into...
Search for R-Parity Violating Decays of Scalar Fermions at LEP (1999)
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Altekamp, N, Anderson, K J, ...
A search for pair produced scalar fermions with couplings that violate R-parity has been performed using a data sample corresponding to an integrated luminosity of 56 pb-1 at a centre-of-mass energy...
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Altekamp, N, Anderson, K J, ...
We present a test of the flavour independence of the strong coupling constant for charm and bottom quarks with respect to light (uds) quarks, based on a hadronic event sample obtained with the OPAL...
Search for Scalar Top and Scalar Bottom Quarks at $\sqrt{s}$ = 189 GeV at LEP (1999)
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Altekamp, N, Anderson, K J, ...
Searches for a scalar top quark and a scalar bottom quark have been performed using a data sample of 182 pb-1 at a centre-of-mass energy of 189 GeV collected with the OPAL detector at LEP. No...
Experimental properties of gluon and quark jets from a point source (1999)
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Altekamp, N, Anderson, K J, ...
Gluon jets are identified in hadronic Z0 decays as all the particles in a hemisphere opposite to a hemisphere containing two tagged quark jets. Gluon jets defined in this manner are equivalent to...
Intermittency and correlations in hadronic $Z^0$ decays (1999)
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Altekamp, N, Anderson, K J, ...
A multidimensional study of local multiplicity fluctuations and multiparticle correlations of hadrons produced in Z decays is performed. The study is based on the data sample of more than 4 million...
$D^{*\pm}$ production in 350 GeV/c $\pi^{-}$-N interactions (1999)
Adinolfi, M, Alexandrov, Yu A, Angelini, C, Barberis, D, Cardini, A, Ceradini, F, ...
We report measurements of ${\rm D}^{*\pm}$ production in interactions between $350\,{\rm GeV/}c$ $\pi^-$ particles and nuclei. Reconstruction of the decay ${\rm D}^{*+} \rightarrow {\rm D}^0 \pi^+$...
Measurements of the QED Structure of the Photon (1999)
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Altekamp, N, Anderson, K J, ...
The structure of both quasi-real and highly virtual photons is investigated using the reaction e+e- -> e+e-mu+mu-, proceeding via the exchange of two photons. The results are based on the complete...
Searches for R-Parity Violating Decays of Gauginos at 183 GeV at LEP (1999)
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Altekamp, N, Anderson, K J, ...
Searches for pair-produced charginos and neutralinos with R-parity violating decays have been performed using a data sample corresponding to an integrated luminosity of 56 pb-1 collected with the...
Measurement of the W Mass and Width in $e^{+}e^{-}$ Collisions at 183 GeV (1999)
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Altekamp, N, Anderson, K J, ...
Using a data sample of 57 pb-1 recorded at a centre-of-mass energy of 183 GeV with the Opal detector at LEP, 282 W+W- -> qqqq and 300 W+W- -> qqlnu candidate events are used to obtain a measurement...
Colour reconnection studies in $e^{+}e^{-} \to W^{+}W^{-}$ at $\sqrt{s}$=183 GeV (1999)
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Altekamp, N, Anderson, K J, ...
The predicted effects of final state interactions such as colour reconnection are investigated by measuring properties of hadronic decays of W bosons, recorded at a centre-of-mass energy of...
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Altekamp, N, Anderson, K J, ...
The lifetimes of the B+ and B0 mesons, and their ratio, have been measured in the OPAL experiment using 2.4 million hadronic Z0 decays recorded at LEP. Z0 -> b bbar decays were tagged using displaced...
Search for Baryon and Lepton Number Violating $Z^0$ Decays (1999)
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Altekamp, N, Anderson, K J, ...
Using data collected with the OPAL detector at LEP, we have searched for the processes e+e- -> Z0 -> p e-, p mu- and the charge conjugate final-states. These would violate the conservation of the...
A Study of B0(S) meson oscillation using hadronic Z0 decays containing leptons (1999)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Alexander, G, Allison, J, Altekamp, N, ...
Intermittency and correlations in hadronic Z0 decays (1999)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Alexander, G, Allison, J, Altekamp, N, ...
Experimental properties of gluon and quark jets from a point source (1999)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Alexander, G, Allison, J, Altekamp, N, ...
A Study of spin alignment of rho(770)+- and omega(782) mesons in hadronic Z0 decays (1999)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Alexander, G, Allison, J, Altekamp, N, ...
Measurement of the production rate of charm quark pairs from gluons in hadronic Z0 decays (1999)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Alexander, G, Allison, J, Anderson, K J, ...
A Study of three prong tau decays with charged kaons (1999)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Alexander, G, Allison, J, Anderson, K J, ...
Leading particle production in light flavor jets (1999)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Akesson, PF, Alexander, G, Allison, J, ...
Measurements of inclusive semileptonic branching fractions of b hadrons in Z0 decays (1999)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Alexander, G, Allison, J, Altekamp, N, ...
Measurements of R(b), A**b(FB), and A**c(FB) in e+ e- collisions at 130-GeV - 189-GeV (1999)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Akesson, P F, Alexander, G, Allison, J, ...
Measurements of the QED structure of the photon (1999)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Alexander, G, Allison, J, Altekamp, N, ...
Multiphoton production in e+ e- collisions at S**(1/2) = 189-GeV (1999)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Alexander, G, Allison, J, Anderson, K J, ...
Precision luminosity for Z0 line shape measurements with a silicon tungsten calorimeter (1999)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Alexander, G, Allison, J, Anderson, K J, ...
QCD studies with e+ e- annihilation data at 172-GeV - 189-GeV (1999)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Akesson, P F, Alexander, G, Allison, J, ...
Search for neutral Higgs bosons in e+ e- collisions at S**(1/2) approximately equals 189-GeV (1999)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Alexander, G, Allison, J, Anderson, K J, ...
Search for chargino and neutralino production at S**(1/2) = 189-GeV at LEP (1999)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Alexander, G, Allison, J, Anderson, K J, ...
Search for new physics in rare B decays (1999)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Akesson, P F, Alexander, G, Allison, J, ...
Search for scalar top and scalar bottom quarks at S**(1/2) = 189-GeV at LEP (1999)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Alexander, G, Allison, J, Altekamp, N, ...
Search for R-parity violating decays of scalar fermions at LEP (1999)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Alexander, G, Allison, J, Altekamp, N, ...
Tau decays with neutral kaons (1999)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Akesson, P F, Alexander, G, Allison, J, ...
Search for unstable heavy and excited leptons at LEP-2 (1999)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Akesson, P F, Alexander, G, Allison, J, ...
Total hadronic cross-section of photon-photon interactions at LEP (1999)
OPAL Collaboration, Abbiendi, G, Ackerstaff, K, Alexander, G, Allison, J, Altekamp, N, ...
JADE Collaboration, OPAL Collaboration, Pfeifenschneider, P, Biebel, O, Movilla Fernandez, P A, Abbiendi, G, ...
A Combination of Preliminary Electroweak Measurements and Constraints on the Standard Model (1999)
Abbaneo, D., Alcaraz, J., Antilogus, P., Behnke, T., Bella, G., Bertucci, B., ...
A Combination of Preliminary Electroweak Measurements and Constraints on the Standard Model (1999)
Abbaneo, D., Alcaraz, J., Antilogus, P., Behnke, T., Bella, G., Bertucci, B., ...
Abbiendi, G, Ackerstaff, K, Alexander, Gideon, Allison, J, Altekamp, N, Anderson, K J, ...
The product branching ratio, f(b->Lambda_b).BR(Lambda_b->Lambda X), where Lambda_b denotes any weakly-decaying b-baryon, has been measured using the OPAL detector at LEP. Lambda_b are selected by the...