Bailey, LCFI Collaboration: David, Devetak, Erik, Grimes, Mark, Harder, Kristian, Hillert, Sonja, Jackson, David, ...
The precision measurements envisaged at the International Linear Collider (ILC) depend on excellent instrumentation and reconstruction software. The correct identification of heavy flavour jets,...
Cross-sections and branching ratios for charged Higgs searches (2009)
For the preparation of the experimental search for charged Higgs bosons at the LHC detailed studies have been made to determine the expected charged Higgs boson production cross-sections and decay...
Status of Higgs Boson Searches at the Tevatron (2009)
Over the last years the Tevatron Run-II has extended several limits on Higgs boson masses and coupling which were pioneered during the LEP accelerator operation between 1989 and 2000. Higgs boson...
Modeling of Charge Transfer Inefficiency in a CCD with High Speed Column Parallel Readout (2008)
Sopczak, Andre, Aoulmit, Salim, Bekhouche, Khaled, Bowdery, Chris, Buttar, Craig, Damerell, Chris, ...
Charge Coupled Devices (CCDs) have been successfully used in several high energy physics experiments over the past two decades. Their high spatial resolution and thin sensitive layers make them an...
Measurements of Charge Transfer Inefficiency in a CCD with High-Speed Column Parallel Readout (2008)
Sopczak, Andre, Bekhouche, Khaled, Damerell, Chris, Greenshaw, Tim, Koziel, Michal, Stefanov, Konstantin, ...
Charge Coupled Devices (CCDs) have been successfully used in several high energy physics experiments over the past two decades. Their high spatial resolution and thin sensitive layers make them an...
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre, ...
We present measurements of the process p[overline p]-->WZ+X-->[script-l][prime]nu[script-l][prime][script-l][overline [script-l]] at sqrt(s)=1.96 TeV, where [script-l] and [script-l][prime] are...
Results of detailed simulations of the charge transfer inefficiency of a prototype serial readout CCD chip are reported. The effect of radiation damage on the chip operating in a particle detector at...
Freitas, Ayres, Milstene, Caroline, Schmitt, Michael, Sopczak, Andre
Many supersymmetric models predict new particles within the reach of the next generation of colliders. For an understanding of the model structure and the mechanism(s) of symmetry breaking, it is...
Measurement of the branching fraction Br(B0(s) → Ds(*) Ds(*))}. (2007)
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre
We report a study of the decay BDD using a data sample corresponding to 1.3 fb-1 of integrated luminosity collected by the D0 experiment in 2002–2006 during run II of the Fermilab Tevatron...
Progress with vertex detector sensors for the International Linear Collider. (2007)
Worm, Steve, Banda , Y., Bowdery, Chris, Buttar, C., Clarke, P., Cussans, D., ...
In the past year, the Linear Collider Flavour Identification (LCFI) Collaboration has taken significant steps towards having a sensor suitable for use in the silicon vertex detector of the...
Small visible energy scalar top iterative discriminant analysis. (2007)
Sopczak, Andre, Finch, Alex J., Freitas, A., Milstene, C., Schmitt, M.
Light scalar top quarks with a small mass difference with respect to the neutralino mass are of particular cosmological interest. This study uses an iterative discriminant analysis method to optimize...
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre
We present a measurement of the top quark pair production cross section in p[overline p] collisions at sqrt(s)=1.96 TeV utilizing 425 pb-1 of data collected with the D0 detector at the Fermilab...
Radiation Hardness Studies in a CCD with High-Speed Column Parallel Readout (2007)
Charge Coupled Devices (CCDs) have been successfully used in several high energy physics experiments over the past two decades. Their high spatial resolution and thin sensitive layers make them an...
Search for a Higgs boson produced in association with a Z boson in p p collisions}. (2007)
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre
We describe a search for the Standard Model Higgs boson with a mass of 105 GeV/c2 to 145 GeV/c2 in data corresponding to an integrated luminosity of approximately 450 pb−1 collected with the DØ...
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre
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...
Search for Bs → μ+ μ- at D0}. (2007)
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre
We report results from a search for the decay Bs0-->µ+µ- using 1.3 fb-1 of p[overline p] collisions at sqrt(s)=1.96 TeV collected by the D0 experiment at the Fermilab Tevatron Collider. We find two...
Scalar top study: Detector optimization. (2007)
A vertex detector concept of the linear collider flavour identification (LCFI) collaboration, which studies pixel detectors for heavy quark flavour identification, has been implemented in simulations...
Measurement of the Λb lifetime in the exclusive decay Λb → J/ψ Λ. (2007)
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre
We have measured the b lifetime using the exclusive decay bJ/, based on 1.2 fb-1 of data collected with the D0 detector during 2002–2006. From 171 reconstructed b decays, where the J/ and are...
Study of multi-muon bundles in cosmic ray showers detected with the DELPHI detector at LEP. (2007)
Abdallah, J., Sopczak, Andre, DELPHI Collaboration, Et Al.
The DELPHI detector at LEP has been used to measure multi-muon bundles originating from cosmic ray interactions with air. The cosmic events were recorded in “parasitic mode” between individual...
Measurement of the t t production cross-section in p p collisions using dilepton events}. (2007)
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre
We present a measurement of the t[overline t] pair production cross section in p[overline p] collisions at sqrt(s)=1.96 TeV utilizing approximately 425 pb-1 of data collected with the D0 detector. We...
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre
We present a study of eeγ and μμγ events using 1109 (1009) pb−1 of data in the electron (muon) channel, respectively. These data were collected with the DØ detector at the Fermilab Tevatron...
Search for stopped gluinos from pp collisions at √s = 1.96-TeV}. (2007)
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre
Long-lived, heavy particles are predicted in a number of models beyond the standard model of particle physics. We present the first direct search for such particles' decays, occurring up to 100 h...
Search for Pentaquarks in the Hadronic Decays of the Z Boson with the DELPHI Detector at LEP. (2007)
Abdallah, J., Sopczak, Andre, DELPHI Collaboration, Et Al.
The quark model does not exclude states composed of more than three quarks, like pentaquark systems. Controversial evidence for such states has been published in the last years, in particular: for a...
Abazov, V.M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre
We combine the D0 measurement of the width difference between the light and heavy Bs0 mass eigenstates and of the CP-violating mixing phase determined from the time-dependent angular distributions in...
Search for third-generation leptoquarks in p p collisions at √s = 1.96-TeV}. (2007)
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre
We report on a search for charge-1/3 third-generation leptoquarks (LQ) produced in p collisions at =1.96 TeV using the D0 detector at Fermilab. Third-generation leptoquarks are assumed to be produced...
Sopczak, Andre, Bekhouche, Khaled, Bowdery, Chris, Damerell, Chris, Davies, Gavin, Dehimi, Lakhdar, ...
Results of detailed simulations of the charge transfer inefficiency of a prototype serial readout CCD chip are reported. The effect of radiation damage on the chip operating in a particle detector at...
Z gamma* production in e+e- interactions at s**(1/2) = 183 - 209-GeV. (2007)
Abdallah, J., Sopczak, Andre, The DELPHI Collaboration, Et Al.
Measurements of Zγ* production are presented using data collected by the DELPHI detector at centre-of-mass energies ranging from 183 to 209 GeV, corresponding to an integrated luminosity of about...
Study of triple-gauge-boson couplings ZZZ, ZZgamma and Zgamma gamma LEP. (2007)
Abdallah, J., Sopczak, Andre, The DELPHI Collaboration , Et Al.
Neutral triple-gauge-boson couplings ZZZ, ZZγ and Zγγ have been studied with the DELPHI detector using data at energies between 183 and 208 GeV. Limits are derived on these couplings from an...
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre
We present a measurement of the shape of the boson rapidity distribution for p[overline p]-->Z/gamma*-->e+e-+X events at a center-of-mass energy of 1.96 TeV. The measurement is made for events with...
Investigation of colour reconnection in WW events with the DELPHI detector at LEP-2. (2007)
Abdallah, J., Sopczak, Andre, The DELPHI Collaboration , Et Al.
In the reaction e+e-→WW→(q1q̄2)(q3q̄4) the usual hadronization models treat the colour singlets q1q̄2 and q3q̄4 coming from two W bosons independently. However, since the final state partons...
Measurement of the top quark mass in the lepton + jets channel using the ideogram method. (2007)
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre
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[overline p] collisions at...
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre
We report on a search for second generation leptoquarks (LQ2) which decay into a muon plus quark in collisions at a center-of-mass energy of in the D0 detector using an integrated luminosity of about...
Search for a fourth generation b-prime-quark at LEP-II at s**(1/2) = 196-GeV - 209-GeV. (2007)
Abdallah, J., Sopczak, Andre, The DELPHI Collaboration , Et Al.
A search for the pair production of fourth generation b’-quarks was performed using data taken by the DELPHI detector at LEP-II. The analysed data were collected at centre-of-mass energies ranging...
Lifetime difference and CP-violating phase in the B0s system}. (2007)
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre
From an analysis of the decay BJ/, we obtain the width difference between the light and heavy mass eigenstates (L-H)=0.17±0.09(stat)±0.02(syst) ps-1 and the CP-violating phase...
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre, ...
A search for the pair production of scalar top quarks, , has been performed in 360 pb−1 of data from collisions at a center-of-mass energy of 1.96 TeV, collected by the DØ detector at the Fermilab...
Evidence for production of single top quarks and first direct measurement of |V(tb)|. (2007)
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre
The D0 Collaboration presents first evidence for the production of single top quarks at the Fermilab Tevatron p collider. Using a 0.9 fb-1 dataset, we apply a multivariate analysis to separate signal...
Measurement of the W boson helicity in top quark decay at D0. (2007)
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre
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[overline t] events in the [script-l]+jets and dilepton decay...
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre
We present the first experimental discrimination between the 2e/3 and 4e/3 top quark electric charge scenarios, using top quark pairs (t) produced in p collisions at =1.96 TeV by the Fermilab...
Multivariate searches for single top quark production with the D0 detector. (2007)
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre
We present a search for electroweak production of single top quarks in the s-channel (p[overline p]-->t[overline b]+X) and t-channel (p[overline p]-->tq[overline b]+X) modes. We have analyzed 230...
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre, ...
A measurement of the top quark pair production cross section in proton antiproton collisions at an interaction energy of sqrt(s)=1.96 TeV is presented. This analysis uses 405±25 pb-1 of data...
Search for techniparticles in e + jets events at D0. (2007)
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre
We search for the technicolor process pT/TWT in events containing one electron and two jets, in data corresponding to an integrated luminosity of 390 pb-1, recorded by the D0 experiment at the...
Searches for invisibly decaying Higgs bosons (2006)
Stanitzki, Marcel, Sopczak, Andre, Gómez-Ceballos, G, Matorras, Francisco
Alignment of the Central D-Zero Detector (2006)
The alignment procedure of the Silicon Microstrip Tracker, SMT, and the Central Fiber Tracker, CFT, is described. Alignment uncertainties and resulting systematic errors in physics analyses are...
Search for excited muons in p p collisions at √s = 1.96- TeV}. (2006)
Abazov, V. M., Bertram, Iain, Borissov, Guennadi, Fox, Harald, Ratoff, Peter, Sopczak, Andre
Search for a single top quark production in pp collisions at √s = 1.96 TeV (2005)
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
Analyzing the scalar top coannihilation region at the International Linear Collider (2005)
Carena, M., Finch, Alex J., Freitas, A., Milstene, C., Howak, H., Sopczak, Andre
The minimal supersymmetric standard model opens the possibility of electroweak baryogenesis provided that the light scalar top quark (stop) is lighter than the top quark. In addition, the lightest...
Measurement of the Lifetime Difference in the B0s System (2005)
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
We present a study of the decay BJ/. We obtain the CP-odd fraction in the final state at time zero, R=0.16±0.10(stat)±0.02(syst), the average lifetime of the (B, ) system, (B)=1.39(stat)(syst) ps,...
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
We present a measurement of the top quark pair (t t¯) production cross section (σt t¯) in pp¯ collisions at a center-of-mass energy of 1.96 TeV using 230 pb−1 of data collected by the DØ...
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
We present a measurement of the top quark pair (t t¯) production cross section (σt t¯) in pp¯ collisions at √s = 1.96 TeV using 230 pb−1 of data collected by the DØ experiment at the...
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
We present a measurement of the top quark pair (t t¯) production cross section in pp¯ collisions at √s = 1.96 TeV using events with two charged leptons in the final state. This analysis utilizes...
Measurement of Semileptonic Branching Fractions of B Mesons to Narrow D** States (2005)
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
Using the data accumulated in 2002–2004 with the D0 detector in proton-antiproton collisions at the Fermilab Tevatron collider with a center-of-mass energy of 1.96 TeV, the branching fractions of...
Search for Large Extra Spatial Dimensions in Dimuon Production with the D0 Detector (2005)
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Sopczak, Andre
We present the results of a search for the effects of large extra spatial dimensions in p collisions at =1.96 TeV in events containing a pair of energetic muons. The data correspond to 246 pb-1 of...
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
A search for associated production of charginos and neutralinos is performed using data recorded with the D0 detector at a p center-of-mass energy of 1.96 TeV at the Fermilab Tevatron Collider. This...
Search for Neutral Supersymmetric Higgs Bosons in Multijet Events at =1.96 TeV (2005)
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
We have performed a search for neutral Higgs bosons produced in association with bottom quarks in p collisions, using 260 pb-1 of data collected with the D0 detector in Run II of the Fermilab...
Bose-Einstein Correlations in W+W− events at LEP2 (2005)
DELPHI Collaboration, The, Borissov, Guennadi V., Sopczak, Andre
Bose-Einstein correlations (BEC) between final state particles in the reaction e+e− → W+W− → q1q2q3q4 have been studied. Data corresponding to a total integrated luminosity of 550 pb−1,...
Production of Ξ0c and Ξb in Z decays and lifetime measurement of Ξb (2005)
DELPHI Collaboration, The, Borissov, Guennadi V., Sopczak, Andre
The charmed strange baryon Ξ0c was searched for in the decay channel Ξ0c → Ξ−π+, and the beauty strange baryon Ξb in the inclusive channel Ξb → Ξ−−¯νX, using the 3.5 million...
Production of WZ Events in pp Collisions at ps 1:96 TeV and Limits on Anomalous WWZ Couplings (2005)
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
We present results from a search for WZ production with subsequent decay to ‘‘0‘0 (‘ and ‘0 e or ) using 0:30 fb1 of data collected by the D0 experiment between 2002 and 2004 at the...
Search for Randall-Sundrum Gravitons in Dilepton and Diphoton Final States (2005)
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
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...
Study of Z Events and Limits on Anomalous ZZ and Z Couplings in p Collisions at =1.96 TeV (2005)
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
We present a measurement of the Z production cross section and limits on anomalous ZZ and Z couplings for form-factor scales of =750 and 1000 GeV. The measurement is based on 138 (152) candidates in...
Charge Transfer Inefficiency Studies for CCD Vertex Detectors at a LC (2005)
The Linear Collider Flavour Identification (LCFI) collaboration studies CCD detectors for quark flavour identification in the framework of a future linear e+e- collider. The flavour identification is...
Search for right-handed W bosons in top quark decay (2005)
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
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[overline t] events in the lepton+jets decay mode. These data...
Helicity of the W boson in lepton +jets t ¯t events (2005)
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
We examine properties of candidate events in lepton + jets final states to establish the helicities of W bosons in t→W+b decays. Our analysis is based on a direct calculation of a probability...
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
We present measurements of the inclusive production cross sections of the (1S) bottomonium state in p collisions at =1.96 TeV. Using the (1S)µ+µ- decay mode for a data sample of 159±10 pb-1...
Measurement of the Ratio of B+ and B0 Meson Lifetimes (2005)
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
The ratio of the B+ and B0 meson lifetimes was measured using data collected in 2002–2004 by the D0 experiment in Run II of the Fermilab Tevatron Collider. These mesons were reconstructed in...
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
The WWgamma triple gauge boson coupling parameters are studied using p[overline p]-->[script-l]nugamma+X([script-l]=e,µ) events at sqrt(s)=1.96 TeV. The data were collected with the D0 detector from...
Measurement of the Ratio of Inclusive Cross Sections (pZ+b jet)/(pZ+jet) at =1.96 TeV (2005)
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
Using the data collected with the D0 detector at =1.96 TeV, for integrated luminosities of about 180 pb-1, we have measured the ratio of inclusive cross sections for pZ+b jet to pZ+jet production....
Search for Anomalous Heavy-Flavor Quark Production in Association with W Bosons (2005)
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
We search for anomalous production of heavy-flavor quark jets in association with W bosons at the Fermilab Tevatron p Collider in final states in which the heavy-flavor quark content is enhanced by...
Measurement of the WW Production Cross Section in pp Collisions at ps1:96 TeV (2005)
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
We present a measurement of the W boson pair-production cross section in p collisions at a center-of-mass energy of =1.96 TeV. The data, collected with the Run II D0 detector at Fermilab, correspond...
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
We report on a search for pair production of first-generation scalar leptoquarks (LQ) in p[overline p] collisions at sqrt(s)=1.96 TeV using an integrated luminosity of 252 pb-1 collected at the...
Measurement of sigma(p[overline p]-->Z)·Br(Z-->tautau) at sqrt(s)=1.96 TeV (2005)
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
We present a measurement of the cross section for Z production times the branching fraction to tau leptons, sigma·Br(Z-->tau+tau-), in p[overline p] collisions at sqrt(s)=1.96 TeV in the channel in...
Search for Wb and WH Production in p Collisions at =1.96 TeV (2005)
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
We present a search for Wb production in p collisions at =1.96 TeV in events containing one electron, an imbalance in transverse momentum, and two b-tagged jets. Using 174 pb-1 of integrated...
DELPHI Collaboration, The, Borissov, Guennadi V., Sopczak, Andre
A novel high precision method measures the b-quark forward-backward asymmetry at the Z pole on a sample of 3,560,890 hadronic events collected with the DELPHI detector in 1992 to 2000. An enhanced...
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
We present the results of a search for the flavor-changing neutral current decay Bµ+µ- using a data set with integrated luminosity of 240 pb-1 of p collisions at =1.96 TeV collected with the D0...
Search for Supersymmetry with Gauge-Mediated Breaking in Diphoton Events at D0 (2005)
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
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 collected by...
Measurement of the B0s Lifetime in the Exclusive Decay Channel B0s ! J= (2005)
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
Using the exclusive decay BJ/(µ+µ-)(K+K-), we report the most precise single measurement of the B lifetime. The data sample corresponds to an integrated luminosity of approximately 220 pb-1...
The p¯p → tbH± process at the Tevatron in HERWIG and PYTHIA simulations (2005)
Alwall, J., Biscarat, C., Moretti, S., Rathsman, J., Sopczak, Andre
Charged Higgs boson production in association with a top quark could be the first indication of the existence of Higgs particles. The Tevatron Run-II started data-taking in April 2001 at GeV and...
Measurement of the top quark mass in all-jet events (2005)
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, Andre
We describe a measurement of the mass of the top quark from the purely hadronic decay modes of pairs using all-jet data produced in collisions at at the Fermilab Tevatron Collider. The data, which...
Coherent soft particle production in Z decays into three jets (2005)
DELPHI Collaboration, The, Borissov, Guennadi V., Sopczak, Andre
Low-energy particle production perpendicular to the event plane in three-jet events produced in Z decays in e+e− annihilation is measured and compared to that perpendicular to the event axis in...
DELPHI Collaboration, The, Borissov, Guennadi V., Sopczak, Andre
Hadronic events from the data collected with the DELPHI detector at LEP within the energy range from 89 GeV to 209 GeV are selected, their jet rates are determined and compared to predictions of four...
Highlights of Higgs physics at LEP (2005)
The final results from the combined data of the four LEP experiments ALEPH, DELPHI, L3, and OPAL on Standard Model (SM) Higgs boson searches are presented. New preliminary results of searches in...
Searches for neutral Higgs bosons in extended models. (2004)
DELPHI Collaboration , The, Borissov, Guennadi, Sopczak, Andre
Searches for neutral Higgs bosons produced at LEP in association with Z bosons, in pairs and in the Yukawa process are presented in this paper. Higgs boson decays into b quarks, leptons, or other...
Determination of the e+ e- ! Gamma (gamma) cross-section at LEP 2. (2004)
DELPHI Collaboration , The, Borisov, Guennadi, Sopczak, Andre
A test of the benchmark QED process is reported, using the data collected with the DELPHI detector at LEP 2. The data analysed were recorded at centre-of-mass energies ranging from 161 GeV to 208 GeV...
Bertram, I. A., Borissov, Guennadi, Ratoff, Peter N., Sopczak, Andre, Davies, B., ...
We report the observation of the X(3872) in the J/ψπ+π- channel, with J/ψ decaying to μ+μ-, in pp̅ collisions at sqrt[s]=1.96 TeV. Using approximately 230 pb-1 of data collected with...
Bertram, I. A., Borissov, Guennadi, Ratoff, Peter N., Sopczak, Andre, Davies, B., ...
A search for pair production of doubly charged Higgs bosons in the process pp̅ →H++H--→μ+μ+μ-μ- is performed with the D0 run II detector at the Fermilab Tevatron. The analysis is based on a...
DELPHI Collaboration , The, Borisov, Guennadi, Sopczak, Andre
Hadronic event shape distributions are determined from data in e + e - collisions between 183 and 207 GeV. From these the strong coupling is extracted in , NLLA and matched + NLLA theory....