Combination of CDF and D0 Measurements of the Single Top Production Cross Section

Group, Tevatron Electroweak Working ; Collaboration, for the CDF ; Collaboration, the D0

Fermi National Accelerator Laboratory

关键词: A Centers;    T Quarks Experiment-Hep;    Luminosity;    Matrix Elements;    Production;   

DOI  :  10.2172/963445
RP-ID  :  FERMILAB-TM-2440-E
RP-ID  :  AC02-07CH11359
RP-ID  :  963445

美国|英语

来源: UNT Digital Library

【 摘 要 】

We report a combination of the CDF and D0 measurements of the inclusive single top quark production cross section in the s- and t-channels, {sigma}{sub s+t}, in p{bar p} collisions at a center of mass energy of 1.96 TeV. The total integrated luminosity included in CDF's analysis is 3.2 fb{sup -1} and D0's analysis has 2.3 fb{sup -1}. A Bayesian analysis is used to extract the cross section from the distributions of multivariate discriminants provided by the collaborations. For a top quark mass m{sub t} = 170 GeV/c{sup 2}, we measure a cross section of 2.76{sub -0.47}{sup +0.58} pb. We extract the CKM matrix element |V{sub tb}| = 0.88 {+-} 0.07 with a 95% C.L. lower limit of |V{sub tb}| > 0.77.