Measurement of the tt¯ production cross section in pp¯ collisions at s=1.96  TeV using lepton + jets events with secondary vertex b -tagging

Authors:
  • DAD. Acosta
    D. Acosta
  • TAT. Affolder
    T. Affolder
  • TAT. Akimoto
    T. Akimoto
  • MAM. G. Albrow
    M. G. Albrow
  • DAD. Ambrose
    D. Ambrose
  • SAS. Amerio
    S. Amerio
  • DAD. Amidei
    D. Amidei
  • AAA. Anastassov
    A. Anastassov
  • KAK. Anikeev
    K. Anikeev
  • AAA. Annovi
    A. Annovi
  • JAJ. Antos
    J. Antos

Abstract
We present a measurement of the tt¯ production cross section using events with one charged lepton and jets from pp¯ collisions at a center-of-mass energy of 1.96 TeV. In these events, heavy flavor quarks from top quark decay are identified with a secondary vertex tagging algorithm. From 162  pb−1 of data collected by the Collider Detector at Fermilab, a total of 48 candidate events are selected, where 13.5±1.8 events are expected from background contributions. We measure a tt¯ production cross section of 5.6−1.1+1.2(stat.)−0.6+0.9(syst.)  pb.

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