Abstract
At the Tevatron, the top quark is mainly produced in pairs through the strong interaction and decays before forming hadrons. Thus the kinematical distributions at top pair production possess rich information on the production vertex including polarizations of top and anti-top quarks. In this article, recent measurements on top quark pair production distributions at Tevatron (CDF and DO) are presented.
Highlights
The top quark is the heaviest known elementary particle today with a mass of about 173 GeV/c2 [1], which is one of the most noteworthy features of the top quark
At the Tevatron, the top quark is mainly produced in pairs through the strong interaction and decays before forming hadrons
The top quark decay properties are well measured at Tevatron [2] as well as LHC [3], and V-A structure at top decay vertex is experimentally wellestablished
Summary
The top quark is the heaviest known elementary particle today with a mass of about 173 GeV/c2 [1], which is one of the most noteworthy features of the top quark. The total width of the top quark is expected to be approximately Γt = 1.3 GeV [4, 5] This means the top quark decays retaining the momentum as well as spin polarization as a bare quark at its production, and their information can be extracted from the momenta of the top quark decay products. This property makes the top quark the only quark that can provide us an opportunity to probe a heavy-quark production vertex dire√ctly. Measurements of differential cross sections in the ttsystem, test perturbative QCD (pQCD) for heavy-quark production, and can constrain potential physics beyond the Standard Model (SM) [7]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
