Top physics: measurement of the tt-bar production cross section in p anti-p collisions at s**(1/2) = 1.96 tev using lepton + jets events with secondary vertex b-tagging

Acosta, D. ; Collaboration, The CDF

Lawrence Berkeley National Laboratory

关键词: Decay;    43 Particle Accelerators;    Quarks;    Production;    Cross Sections;   

DOI  :  10.2172/841337
RP-ID  :  LBNL--58104
RP-ID  :  AC03-76SF00098
RP-ID  :  841337

美国|英语

来源: UNT Digital Library

【 摘 要 】

We present a measurement of the t{bar t} production cross section using events with one charged lepton and jets from p{bar p} collisions at a center-of-mass energy of 1.96TeV. In these events, heavy flavor quarks from top quark decay are identified with a secondary vertex tagging algorithm. From 162 pb{sup -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 t{bar t} production cross section of 5.6{sub -1.1}{sup _1.2}(stat.){sub -0.6}{sup +0.9}(syst.)pb.