Top physics: measurement of the tt-bar production cross section in pp-bar collisions at s**(1/2) = 1.96 tev using dilepton event

Acosta, D. ; CDF Collaboration

Lawrence Berkeley National Laboratory

关键词: 43 Particle Accelerators;    Transverse Energy;    Production;    Cross Sections;    Fermilab Collider Detector;   

DOI  :  10.2172/842912
RP-ID  :  LBNL--58029
RP-ID  :  AC03-76SF00098
RP-ID  :  842912

美国|英语

来源: UNT Digital Library

【 摘 要 】

We report a measurement of the t{bar t} production cross section using dilepton events with jets and missing transverse energy in p{bar p} collisions at a center-of-mass energy of 1.96 TeV. Using a 197 {+-} 12 pb{sup -1} data sample recorded by the upgraded Collider Detector at Fermilab, we use two complementary techniques to select candidate events. We compare the number of observed events and selected kinematical distributions with the predictions of the standard model and find good agreement. The combined result of the two techniques yields a t{bar t} production cross section of 7.0{sub -2.1}{sup +2.4}(stat){sub -1.1}{sup _1.6}(syst) {+-} 0.4(lum) pb.