已收录 273079 条政策
 政策提纲
  • 暂无提纲
Combination of CDF and D0 Measurements of the Single Top Production Cross Section
[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.
[发布日期] 2009-08-01 [发布机构] 
[效力级别]  [学科分类] 物理(综合)
[关键词] A CENTERS;CROSS SECTIONS;FERMILAB COLLIDER DETECTOR;LUMINOSITY;MATRIX ELEMENTS;PRODUCTION;T QUARKS Experiment-HEP [时效性] 
   浏览次数:21      统一登录查看全文      激活码登录查看全文