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Dependence of the tt production cross section on the transverse momentum of the top quark

  • V. M. Abazov
  • , B. Abbott
  • , M. Abolins
  • , B. S. Acharya
  • , M. Adams
  • , T. Adams
  • , E. Aguilo
  • , G. D. Alexeev
  • , G. Alkhazov
  • , A. Alton
  • , G. Alverson
  • , G. A. Alves
  • , L. S. Ancu
  • , M. Aoki
  • , Y. Arnoud
  • , M. Arov
  • , A. Askew
  • , B. Åsman
  • , O. Atramentov
  • , C. Avila
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Corcoran, F. Couderc, M. C. Cousinou, D. Cutts, M. Ćwiok, A. Das, G. Davies, K. De, S. J. de Jong, E. De La Cruz-Burelo, K. DeVaughan, F. Déliot, M. Demarteau, R. Demina, D. Denisov, S. P. Denisov, S. Desai, H. T. Diehl, M. Diesburg, A. Dominguez, T. Dorland, A. Dubey, L. V. Dudko, L. Duflot, D. Duggan, A. Duperrin, S. Dutt, A. Dyshkant, M. Eads, D. Edmunds, J. Ellison, V. D. Elvira, Y. Enari, S. Eno, H. Evans, A. Evdokimov, V. N. Evdokimov, G. Facini, A. V. Ferapontov, T. Ferbel, F. Fiedler, F. Filthaut, W. Fisher, H. E. Fisk, M. Fortner, H. Fox, S. Fuess, T. Gadfort, C. F. Galea, A. Garcia-Bellido, V. Gavrilov, P. Gay, W. Geist, W. Geng, D. Gerbaudo, C. E. Gerber, Y. Gershtein, D. Gillberg, G. Ginther, G. Golovanov, B. Gómez, A. Goussiou, P. D. Grannis, S. Greder, H. Greenlee, Z. D. Greenwood, E. M. Gregores, G. Grenier, P. Gris, J. F. Grivaz, A. Grohsjean, S. Grünendahl, M. W. Grünewald, F. Guo, J. Guo, G. Gutierrez, P. Gutierrez, A. Haas, P. Haefner, S. Hagopian, J. Haley, I. 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Quinn, M. S. Rangel, K. Ranjan, P. N. Ratoff, I. Razumov, P. Renkel, P. Rich, M. Rijssenbeek, I. Ripp-Baudot, F. Rizatdinova, S. Robinson, M. Rominsky, C. Royon, P. Rubinov, R. Ruchti, G. Safronov, G. Sajot, A. Sánchez-Hernández, M. P. Sanders, B. Sanghi, G. Savage, L. Sawyer, T. Scanlon, D. Schaile, R. D. Schamberger, Y. Scheglov, H. Schellman, T. Schliephake, S. Schlobohm, C. Schwanenberger, R. Schwienhorst, J. Sekaric, H. Severini, E. Shabalina, V. Shary, A. A. Shchukin, R. K. Shivpuri, V. Simak, V. Sirotenko, P. Skubic, P. Slattery, D. Smirnov, G. R. Snow, J. Snow, S. Snyder, S. Söldner-Rembold, L. Sonnenschein, A. Sopczak, M. Sosebee, K. Soustruznik, B. Spurlock, J. Stark, V. Stolin, D. A. Stoyanova, J. Strandberg, M. A. Strang, E. Strauss, M. Strauss, R. Ströhmer, D. Strom, L. Stutte, P. Svoisky, M. Takahashi, A. Tanasijczuk, W. Taylor, B. Tiller, M. Titov, V. V. Tokmenin, D. Tsybychev, B. Tuchming, C. Tully, P. M. Tuts, R. Unalan, L. Uvarov, S. Uvarov, S. Uzunyan, P. 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Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

We present a measurement of the differential cross section for tt events produced in pp collisions at √s=1.96 TeV as a function of the transverse momentum (pT) of the top quark. The selected events contain a high-pT lepton (γ), a large imbalance in pT, four or more jets with at least one candidate for a b jet, and correspond to 1 fb-1 of integrated luminosity recorded with the D0 detector. Objects in the event are associated through a constrained kinematic fit to the tt → WbWb → γνbqq'b process. Results from next and next-to-next-to-leading-order perturbative QCD calculations agree with the measured differential cross section. Comparisons are also provided to predictions from Monte Carlo event generators using QCD calculations at different levels of precision.

Original languageEnglish
Pages (from-to)515-521
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume693
Issue number5
DOIs
StatePublished - Oct 18 2010

Keywords

  • Differential cross sections
  • Perturbative QCD
  • Top quark

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