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Measurement of the forward-backward asymmetry in the distribution of leptons in t t ¯ events in the lepton+jets channel measurement of the forward-backward asymmetry ... V.M. Abazov et al.

  • V. M. Abazov*
  • , B. Abbott
  • , B. S. Acharya
  • , M. Adams
  • , T. Adams
  • , J. P. Agnew
  • , G. D. Alexeev
  • , G. Alkhazov
  • , A. Alton
  • , A. Askew
  • , S. Atkins
  • , K. Augsten
  • , C. Avila
  • , F. Badaud
  • , L. Bagby
  • , B. Baldin
  • , D. V. Bandurin
  • , S. Banerjee
  • , E. Barberis
  • , P. Baringer
  • J. F. Bartlett, U. Bassler, V. Bazterra, A. Bean, M. Begalli, L. Bellantoni, S. B. Beri, G. Bernardi, R. Bernhard, I. Bertram, M. Besançon, R. Beuselinck, P. C. Bhat, S. Bhatia, V. Bhatnagar, G. Blazey, S. Blessing, K. Bloom, A. Boehnlein, D. Boline, E. E. Boos, G. Borissov, M. Borysova, A. Brandt, O. Brandt, R. Brock, A. Bross, D. Brown, X. B. Bu, M. Buehler, V. Buescher, V. Bunichev, S. Burdin, C. P. Buszello, E. Camacho-Pérez, B. C.K. Casey, H. Castilla-Valdez, S. Caughron, S. Chakrabarti, K. M. Chan, A. Chandra, A. Chapelain, E. Chapon, G. Chen, S. W. Cho, S. Choi, B. Choudhary, S. Cihangir, D. Claes, J. Clutter, M. Cooke, W. E. Cooper, M. Corcoran, F. Couderc, M. C. Cousinou, D. Cutts, A. Das, G. Davies, S. J. De Jong, E. De La Cruz-Burelo, F. Déliot, R. Demina, D. Denisov, S. P. Denisov, S. Desai, C. Deterre, K. Devaughan, H. T. Diehl, M. Diesburg, P. F. Ding, A. Dominguez, A. Dubey, L. V. Dudko, A. Duperrin, S. Dutt, M. Eads, D. Edmunds, J. Ellison, V. D. Elvira, Y. Enari, H. Evans, V. N. Evdokimov, A. Falkowski, L. Feng, T. Ferbel, F. Fiedler, F. Filthaut, W. Fisher, H. E. Fisk, M. Fortner, H. Fox, S. Fuess, P. H. Garbincius, A. Garcia-Bellido, J. A. García-González, V. Gavrilov, W. Geng, C. E. Gerber, Y. Gershtein, G. Ginther, G. Golovanov, P. D. Grannis, S. Greder, H. Greenlee, G. Grenier, Ph Gris, J. F. Grivaz, A. Grohsjean, S. Grünendahl, M. W. Grünewald, T. Guillemin, G. Gutierrez, P. Gutierrez, J. Haley, L. Han, K. Harder, A. Harel, J. M. Hauptman, J. Hays, T. Head, T. Hebbeker, D. Hedin, H. Hegab, A. P. Heinson, U. Heintz, C. Hensel, I. Heredia-De La Cruz, K. Herner, G. Hesketh, M. D. Hildreth, R. Hirosky, T. Hoang, J. D. Hobbs, B. Hoeneisen, J. Hogan, M. Hohlfeld, J. L. Holzbauer, I. Howley, Z. Hubacek, V. Hynek, I. Iashvili, Y. Ilchenko, R. Illingworth, A. S. Ito, S. Jabeen, M. Jaffré, A. Jayasinghe, M. S. Jeong, R. Jesik, P. Jiang, K. Johns, E. Johnson, M. Johnson, A. Jonckheere, P. Jonsson, J. Joshi, A. W. Jung, A. Juste, E. Kajfasz, D. Karmanov, I. Katsanos, R. Kehoe, S. Kermiche, N. Khalatyan, A. Khanov, A. Kharchilava, Y. N. Kharzheev, I. Kiselevich, J. M. Kohli, A. V. Kozelov, J. Kraus, A. Kumar, A. Kupco, T. Kurča, V. A. Kuzmin, S. Lammers, P. Lebrun, H. S. Lee, S. W. Lee, W. M. Lee, X. Lei, J. Lellouch, D. Li, H. Li, L. Li, Q. Z. Li, J. K. Lim, D. Lincoln, J. Linnemann, V. V. Lipaev, R. Lipton, H. Liu, Y. Liu, A. Lobodenko, M. Lokajicek, R. Lopes De Sa, R. Luna-Garcia, A. L. Lyon, A. K.A. Maciel, R. Madar, R. Magaña-Villalba, S. Malik, V. L. Malyshev, J. Mansour, J. Martínez-Ortega, R. McCarthy, C. L. McGivern, M. M. Meijer, A. Melnitchouk, D. Menezes, P. G. Mercadante, M. Merkin, A. Meyer, J. Meyer, F. Miconi, N. K. Mondal, M. Mulhearn, E. Nagy, M. Narain, R. Nayyar, H. A. Neal, J. P. Negret, P. Neustroev, H. T. Nguyen, T. Nunnemann, D. Orbaker, J. Orduna, N. Osman, J. Osta, A. Pal, N. Parashar, V. Parihar, S. K. Park, R. Partridge, N. Parua, A. Patwa, B. Penning, M. Perfilov, Y. Peters, K. Petridis, G. Petrillo, P. Pétroff, M. A. Pleier, V. M. Podstavkov, A. V. Popov, M. Prewitt, D. Price, N. Prokopenko, J. Qian, A. Quadt, B. Quinn, P. N. Ratoff, I. Razumov, I. Ripp-Baudot, F. Rizatdinova, M. Rominsky, A. Ross, C. Royon, P. Rubinov, R. Ruchti, G. Sajot, A. Sánchez-Hernández, M. P. Sanders, A. S. Santos, G. Savage, L. Sawyer, T. Scanlon, R. D. Schamberger, Y. Scheglov, H. Schellman, C. Schwanenberger, R. Schwienhorst, J. Sekaric, H. Severini, E. Shabalina, V. Shary, S. Shaw, A. A. Shchukin, V. Simak, P. Skubic, P. Slattery, D. Smirnov, G. R. Snow, J. Snow, S. Snyder, S. Söldner-Rembold, L. Sonnenschein, K. Soustruznik, J. Stark, D. A. Stoyanova, M. Strauss, L. Suter, P. Svoisky, M. Titov, V. V. Tokmenin, Y. T. Tsai, D. Tsybychev, B. Tuchming, C. Tully, L. Uvarov, S. Uvarov, S. Uzunyan, R. Van Kooten, W. M. Van Leeuwen, N. Varelas, E. W. Varnes, I. A. Vasilyev, A. Y. Verkheev, L. S. Vertogradov, M. Verzocchi, M. Vesterinen, D. Vilanova, P. Vokac, H. D. Wahl, M. H.L.S. Wang, J. Warchol, G. Watts, M. Wayne, J. Weichert, L. Welty-Rieger, M. R.J. Williams, G. W. Wilson, M. Wobisch, D. R. Wood, T. R. Wyatt, Y. Xie, R. Yamada, S. Yang, T. Yasuda, Y. A. Yatsunenko, W. Ye, Z. Ye, H. Yin, K. Yip, S. W. Youn, J. M. Yu, J. Zennamo, T. G. Zhao, B. Zhou, J. Zhu, M. Zielinski, D. Zieminska, L. Zivkovic
*Corresponding author for this work
  • Joint Institute for Nuclear Research, Dubna
  • University of Oklahoma Bioengineering Center
  • Tata Institute of Fundamental Research, Mumbai
  • University of Illinois at Chicago
  • Florida State University
  • University of Manchester
  • Petersburg Nuclear Physics Institute (PNPI)
  • University of Michigan, Ann Arbor
  • Louisiana Tech University
  • Czech Technical University in Prague
  • Universidad de los Andes Colombia
  • Université Blaise Pascal
  • Fermi National Accelerator Laboratory
  • University of Virginia
  • Northeastern University
  • University of Kansas
  • CEA Saclay
  • Universidade do Estado do Rio de Janeiro
  • Panjab University
  • Universités Paris VI and VII
  • University of Freiburg
  • Lancaster University
  • Imperial College London
  • University of Mississippi
  • Northern Illinois University
  • University of Nebraska-Lincoln
  • Stony Brook University
  • Lomonosov Moscow State University
  • Taras Shevchenko National University of Kyiv
  • University of Texas at Arlington
  • Georg-August-Universität Göttingen
  • Michigan State University
  • Johannes Gutenberg University Mainz
  • Uppsala University
  • Centro de Investigacion y de Estudios Avanzados del Instituto Politécnico Nacional
  • University of Notre Dame
  • Rice University
  • Korea University
  • University of Delhi
  • Aix-Marseille Université
  • Brown University
  • University of Arizona
  • FOM-Institute NIKHEF and University of Amsterdam/NIKHEF
  • Radboud University
  • University of Rochester
  • Institute for High Energy Physics
  • University of California at Riverside
  • Indiana University Bloomington
  • Institute for Theoretical and Experimental Physics
  • Rutgers University–New Brunswick
  • Université de Strasbourg
  • Universite Claude Bernard Lyon 1
  • Université Paris-Sud
  • University College Dublin
  • Oklahoma State University
  • University of Science and Technology of China
  • Iowa State University
  • Université de Lyon
  • RWTH Aachen University
  • Centro Brasileiro de Pesquisas Físicas
  • State University of New York at Buffalo
  • Southern Methodist University
  • The Barcelona Institute of Science and Technology
  • Czech Academy of Sciences
  • Universidade Federal do ABC
  • Ludwig Maximilian University of Munich
  • Purdue University Calumet
  • Brookhaven National Laboratory
  • Université Joseph Fourier Grenoble 1
  • Northwestern University
  • Langston University
  • Charles University
  • Princeton University
  • University of Washington

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

We present measurements of the forward-backward asymmetry in the angular distribution of leptons from decays of top quarks and antiquarks produced in proton-antiproton collisions. We consider the final state containing a lepton and at least three jets. The entire sample of data collected by the D0 experiment during Run II of the Fermilab Tevatron Collider, corresponding to 9.7fb-1 of integrated luminosity, is used. The asymmetry measured for reconstructed leptons is AFBl=(2.9±2.1(stat.)-1.7+1.5(syst.))%. When corrected for efficiency and resolution effects within the lepton rapidity coverage of |yl|<1.5, the asymmetry is found to be AFBl=(4.2±2.3(stat.)-2.0+1.7(syst.))%. We examine the dependence of AFBl on the transverse momentum and rapidity of the lepton. Combination with the asymmetry measured in the final states containing two leptons yields AFBl=(4.2±2.0(stat.)±1.4(syst.))%. The results are in agreement with predictions from the next-to-leading-order QCD generator mc@nlo, which predicts an asymmetry of AFBl=2.0% for |yl|<1.5.

Original languageEnglish
Article number072001
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume90
Issue number7
DOIs
StatePublished - 7 Oct 2014

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