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 - Článek v odborném periodiku
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
Grant CEP: GA MŠMT LC527; GA MŠMT LA08047
Výzkumný záměr: CEZ:AV0Z10100502
Klíčová slova: top quark * differential cross sections * perturbative QCD
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 5.255, rok: 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.
Trvalý link: http://hdl.handle.net/11104/0191733