Bulletin of the American Physical Society
2005 APS April Meeting
Saturday–Tuesday, April 16–19, 2005; Tampa, FL
Session R7: Top Quark Pair Production I |
Hide Abstracts |
Sponsoring Units: DPF Chair: Estia Eichten, Fermilab Room: Marriott Tampa Waterside Room 1 |
Monday, April 18, 2005 10:45AM - 11:09AM |
R7.00001: Measurement of the Top Quark Pair Production Cross Section in the Di-Muon+Jets Channel at D{\O} Jessica Leveque Measurement of the top quark pair ($t\bar{t}$) production cross section at hadron colliders can be used to test perturbative QCD predictions. Within the Standard Model, the top quark almost always decays to a $W$ boson and a $b$ quark. We present a measurement of the $t\bar{t}$ production cross section at $\sqrt{s}=1.96$ TeV in $p\bar{p}$ collisions using data collected by the D\O\ experiment during Run II of the Fermilab Tevatron collider. We consider the di-muon+jets final state and discuss the selection criteria, efficiencies and background contributions. [Preview Abstract] |
Monday, April 18, 2005 11:09AM - 11:21AM |
R7.00002: Measurement of the Top Quark Pair Production Cross Section in the All-Hadronic Channel at D{\O} Hendrik Hoeth Measurement of the top quark pair ($t\bar{t}$) production cross section at hadron colliders can be used to test perturbative QCD predictions. Within the Standard Model, the top quark almost always decays to a $W$ boson and a $b$ quark. We present studies for the measurement of the $t\bar{t}$ production cross section at $\sqrt{s}=1.96$ TeV in $p\bar{p}$ collisions using data collected by the D\Oexperiment during Run II of the Fermilab Tevatron collider. We consider the all-hadronic channel, characterized by six jets (two of them $b$~jets) in the final state, and discuss the techniques being developed for an optimal separation between signal and the overwhelming QCD multijet background. These involve $b$-tagging by means of a secondary vertex tagger, as well as Neural Networks to exploit the differences between signal and background in event topology. [Preview Abstract] |
Monday, April 18, 2005 11:21AM - 11:33AM |
R7.00003: Measurement of the Top Quark Pair Production Cross Section in the Electron+Muon+Jets Channel at D{\O} Kirti Ranjan Measurement of the top quark pair ($t\bar{t}$) production cross section at hadron colliders can be used to test perturbative QCD predictions. Within the Standard Model, the top quark almost always decays to a $W$ boson and a $b$ quark. We present a measurement of the $t\bar{t}$ production cross section at $\sqrt{s}=1.96$ TeV in $p\bar{p}$ collisions using data collected by the D\O\ experiment during Run II of the Fermilab Tevatron collider. We consider the electron+muon+jets final state and discuss the selection criteria, efficiencies and background contributions. [Preview Abstract] |
Monday, April 18, 2005 11:33AM - 11:45AM |
R7.00004: Measurement of the Top Quark Pair Production Cross Section in the Di-Electron+Jets Channel at D{\O} Ashish Kumar Measurement of the top quark pair ($t\bar{t}$) production cross section at hadron colliders can be used to test perturbative QCD predictions. Within the Standard Model, the top quark almost always decays to a $W$ boson and a $b$ quark. We present a measurement of the $t\bar{t}$ production cross section at $\sqrt{s}=1.96$ TeV in $p\bar{p}$ collisions using about 370 pb$^{-1}$ of data collected by the D\O\ experiment during Run II of the Fermilab Tevatron collider. We consider the di-electron+jets final state and discuss the selection criteria, efficiencies and background contributions. [Preview Abstract] |
Monday, April 18, 2005 11:45AM - 11:57AM |
R7.00005: Measurement of the Top Pair Production Cross Section in the Electron+Jets Channel at D\O\ Using Topological Information Jean-Roch Vlimant Measurement of the top quark pair ($t\bar{t}$) production cross section at hadron colliders can be used to test perturbative QCD predictions. Within the Standard Model, the top quark almost always decays to a $W$~boson and a $b$~quark. We present a measurement of the $t\bar{t}$ production cross section at $\sqrt{s}=1.96$ TeV in $p\bar{p}$ collisions using approximately 370 pb$^{-1}$ of data collected by the D\O\ experiment during Run II of the Fermilab Tevatron collider. This measurement is performed in the electron+jets final state and exploits the differences in event topology between the $t\bar{t}$ signal and the background. [Preview Abstract] |
Monday, April 18, 2005 11:57AM - 12:09PM |
R7.00006: Measurement of the Top Pair Production Cross Section in the Muon+Jets Channel at D\O\ Using Topological Information Nils Gollub Measurement of the top quark pair ($t\bar{t}$) production cross section at hadron colliders can be used to test perturbative QCD predictions. Within the Standard Model, the top quark almost always decays to a $W$~boson and a $b$~quark. We present a measurement of the $t\bar{t}$ production cross section at $\sqrt{s}=1.96$ TeV in $p\bar{p}$ collisions using approximately 370 pb$^{-1}$ of data collected by the D\O\ experiment during Run II of the Fermilab Tevatron collider. This measurement is performed in the muon+jets final state and exploits the differences in event topology between the $t\bar{t}$ signal and the background. [Preview Abstract] |
Monday, April 18, 2005 12:09PM - 12:21PM |
R7.00007: Measurement of the Top Pair Production Cross Section in Lepton+Jets Final States at D\O\ Using Lifetime b-Tagging Gustavo Otero y Garzon Measurement of the top quark pair ($t\bar{t}$) production cross section at hadron colliders can be used to test perturbative QCD predictions. Within the Standard Model, the top quark almost always decays to a $W$~boson and a $b$~quark. We present a measurement of the $t\bar{t}$ production cross section at $\sqrt{s}=1.96$ TeV in $p\bar{p}$ collisions using approximately 230 pb$^{-1}$ of data collected by the D\O\ experiment during Run II of the Fermilab Tevatron collider. The $t\bar{t}$ production cross section is measured in lepton+jets final states based on the application of two different lifetime-tagging techniques. [Preview Abstract] |
Monday, April 18, 2005 12:21PM - 12:33PM |
R7.00008: Measurement of the Top Quark Transverse Momentum Spectrum at D{\O} Jiri Kvita We present a measurement of the transverse momentum spectrum of top quarks produced in pairs ($t\bar{t}$) in $p\bar{p}$ collisions. This spectrum is sensitive to potential contributions from non-standard $t\bar{t}$ production mechanisms. Within the Standard Model the top quark decays into a $W$ boson and a $b$ almost 100\% of the time. In this analysis we consider $t\bar{t}$ candidates selected in the lepton+jets final state, from data collected by the D\O\ experiment during Run II of the Fermilab Tevatron collider. To optimize the resolution of the transverse momentum measurement, we perform a constrained kinematic fit to the $t\bar{t}$ hypothesis, making use of b-tagging to further reduce the combinatorial background. [Preview Abstract] |
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700