Dependence of the View the tt source production cross section on the transverse momentum of the top quark

0352154 - FZÚ 2011 RIV NL eng J - Journal Article
Abazov, V. M. - Abbott, B. - Abolins, M. - Kupčo, Alexander - Lokajíček, Miloš
Dependence of the View the tt source production cross section on the transverse momentum of the top quark.
Physics Letters. B. Roč. 693, č. 5 (2010), s. 515-521. ISSN 0370-2693. E-ISSN 1873-2445
R&D Projects: GA MŠMT LC527; GA MŠMT LA08047
Institutional research plan: CEZ:AV0Z10100502
Keywords : top quark * differential cross sections * perturbative QCD
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 5.255, year: 2010
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TVN-511G1MC-2&_user=625012&_coverDate=10%2F18%2F2010&_alid=1542842401&_rdoc=7&_fmt=high&_or

We present a measurement of the differential cross section for View the MathML source events produced in View the MathML source collisions at View the MathML source as a function of the transverse momentum (pT) of the top quark. The selected events contain a high-pT lepton (ℓ), a large imbalance in pT, four or more jets with at least one candidate for a b jet, and correspond to 1 fb−1 of integrated luminosity recorded with the D0 detector. Objects in the event are associated through a constrained kinematic fit to the View the MathML source process. Results from next and next-to-next-to-leading-order perturbative QCD calculations agree with the measured differential cross section. Comparisons are also provided to predictions from Monte Carlo event generators using QCD calculations at different levels of precision.
Permanent Link: http://hdl.handle.net/11104/0191733