Dependence of the t(t)over-bar production cross section on the transverse momentum of the top quark
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
30/09/2013
20/05/2014
30/09/2013
20/05/2014
18/10/2010
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Resumo |
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) We present a measurement of the differential cross section for t (t) over bar events produced in p (p) over bar collisions at root s = 1.96 TeV as a function of the transverse momentum (p(T)) of the top quark. The selected events contain a high-p(T) lepton (l), a large imbalance in p(T). 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 t (t) over bar -> WbW (b) over bar -> lvbq (q) over bar' (b) over bar 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. (C) 2010 Elsevier B.V. All rights reserved. |
Formato |
515-521 |
Identificador |
http://dx.doi.org/10.1016/j.physletb.2010.09.011 Physics Letters B. Amsterdam: Elsevier B.V., v. 693, n. 5, p. 515-521, 2010. 0370-2693 http://hdl.handle.net/11449/24234 10.1016/j.physletb.2010.09.011 WOS:000283701300002 |
Idioma(s) |
eng |
Publicador |
Elsevier B.V. |
Relação |
Physics Letters B |
Direitos |
closedAccess |
Palavras-Chave | #Top quark #Differential cross sections #Perturbative QCD |
Tipo |
info:eu-repo/semantics/article |