The integration and engineering of the ATLAS SemiConductor Tracker Barrel. (2008)
Abdesselam, A., Bouhova-Thacker, E. V., Brodbeck, T. J., Catmore, James R., Chilingarov, Alexandre, Henderson, Rob C. W., ...
The ATLAS SemiConductor Tracker (SCT) was built in three sections: a barrel and two end-caps. This paper describes the design, construction and final integration of the barrel section. The barrel is...
The ATLAS Experiment at the CERN Large Hadron Collider. (2008)
Aad, G., Bouhova-Thacker, E. V., Brodbeck, T. J., Catmore, James R., Chilingarov, Alexandre, Davidson, R., ...
The ATLAS detector as installed in its experimental cavern at point 1 at CERN is described in this paper. A brief overview of the expected performance of the detector when the Large Hadron Collider...
The T2K experiment and downstream electromagnetic calorimeter. (2008)
Davies, G., Bertram, Ian, Chilingarov, Alexandre, Finch, A., Hatzikoutelis, A., Kormos, L., ...
T2K (Tokai to Kamioka) is a 295km long-baseline experiment in Japan, which is due to start taking commissioning data late in 2009. It is designed to measure muon-neutrino oscillations to other...
Engineering for the ATLAS SemiConductor Tracker (SCT) End-cap. (2008)
Abdesselam, A., Brodbeck, T. J., Chilingarov, Alexandre, Hughes, Gareth, Mercer, Ian J., Ratoff, Peter N., ...
The ATLAS SemiConductor Tracker (SCT) is a silicon-strip tracking detector which forms part of the ATLAS inner detector. The SCT is designed to track charged particles produced in proton-proton...
Engineering for the ATLAS SemiConductor Tracker (SCT) end-cap. (2008)
Abdesselam , A., Brodbeck, T. J., Chilingarov, Alexandre, Hughes, Gareth, Mercer, Ian J., Ratoff, Peter N.
The ATLAS SemiConductor Tracker (SCT) is a silicon-strip tracking detector which forms part of the ATLAS inner detector. The SCT is designed to track charged particles produced in proton-proton...
Measurement of the Lambda_b^0 lifetime using semileptonic decays. (2007)
Bertram, I. A., Borissov, Guennadi, Fox, H., Ratoff, Peter N.
We report a measurement of the 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. The baryon is...
Properties of L=1 B1 and B2* Mesons. (2007)
Ratoff, Peter N., Bertram, I., Borissov, G., Fox, H.
This Letter presents the first strong evidence for the resolution of the excited B mesons B1 and B as two separate states in fully reconstructed decays to B+(*)-. The mass of B1 is measured to be...
Direct Observation of the Strange b Baryon Xi(b)-. (2007)
Borissov, Guennadi, Bertram, I. A., Fox, H., Ratoff, Peter N.
We report the first direct observation of the strange b baryon (). We reconstruct the decay J/-, with J/µ+µ-, and --p-- in p collisions at =1.96 TeV. Using 1.3 fb-1 of data collected by the D0...
The silicon microstrip sensors of the ATLAS semiconductor tracker. (2007)
Ahmad, A., Brodbeck, T. J., Campbell, D., Chilingarov, Alexandre, Holt, S., Hughes, Gareth, ...
This paper describes the AC-coupled, single-sided, p-in-n silicon microstrip sensors used in the Semiconductor Tracker (SCT) of the ATLAS experiment at the CERN Large Hadron Collider (LHC). The...
The ATLAS semiconductor tracker end-cap module. (2007)
Abdesselam , A., Adkin, P. J., Allport, P. P., Brodbeck, T. J., Chilingarov , A., Hughes , Gareth, ...
The challenges for the tracking detector systems at the LHC are unprecedented in terms of the number of channels, the required read-out speed and the expected radiation levels. The ATLAS...
The ATLAS semiconductor tracker end-cap module. (2007)
Abdesselam, A., Brodbeck, T. J., Campbell, D., Chilingarov, Alexandre, Hughes, Gareth, Jones, Roger W. L., ...
The challenges for the tracking detector systems at the LHC are unprecedented in terms of the number of channels, the required read-out speed and the expected radiation levels. The ATLAS...
Measurement of the charge asymmetry in semileptonic B-s(0) decays. (2007)
Ratoff, Peter N., Bertram, I., Borissov, Guennadi, Fox, H.
We have performed the first direct measurement of the time-integrated flavor untagged charge asymmetry in semileptonic B decays A by comparing the decay rate of Bµ+DX, where D- and K+K-, with the...
The barrel modules of the ATLAS semiconductor tracker. (2006)
Abdesselam, A., Brodbeck, T. J., Chilingarov, Alexandre, Hughes, Gareth, Ratoff, Peter N.
This paper describes the silicon microstrip modules in the barrel section of the SemiConductor Tracker (SCT) of the ATLAS experiment at the CERN Large Hadron Collider (LHC). The module requirements,...
Direct limits on the B0(s) oscillation frequency. (2006)
Borissov, Guennadi, Bertram, I. A., Fox, H., Ratoff, Peter N.
We report results of a study of the B oscillation frequency using a large sample of B semileptonic decays corresponding to approximately 1 fb-1 of integrated luminosity collected by the D0 experiment...
Precision Electroweak Measurements on the Z resonance. (2006)
Jones, Roger W. L., Borissov, Guennadi, Grunewald, M. W., Ratoff, Peter N.
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 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
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...
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...
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...
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...
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Sopczak, A.
Correlations in the azimuthal angle between the two largest transverse momentum jets have been measured using the D0 detector in p collisions at a center-of-mass energy =1.96 TeV. The analysis is...
Measurement of the ratio of B+ and B0 meson lifetimes. (2005)
Ratoff, Peter N., Bertram, I., Borissov, Guennadi, Fox, H.
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...
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...
Measurement of the Lifetime in the Decay J/0 with the D0 Detector (2005)
DO Collaboration, The, Bertram, Iain A., Borissov, Guennadi V., Ratoff, Peter N., Spczak , Andre
We present measurements of the lifetime in the exclusive decay channel J/0, with J/µ+µ- and 0p-, the B0 lifetime in the decay B0J/K with J/µ+µ- and K+-, and the ratio of these lifetimes. The...
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...
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...
Borissov, Guennadi, Bertram, I. A., Fox, H., Ratoff, Peter N.
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...
Beam tests of ATLAS SCT silicon strip detector modules. (2005)
Campabadal, F., Brodbeck, T. J., Chilingarov, Alexandre, Hughes, Gareth, Ratoff, Peter N., Sloan, Terry, ...
The design and technology of the silicon strip detector modules for the Semiconductor Tracker (SCT) of the ATLAS experiment have been finalised in the last several years. Integral to this process has...
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...
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...