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Dependence of the $t\bar{t}$ Production Cross Section on the Transverse Momentum of the Top Quark
Stockholm University, Faculty of Science, Department of Physics. (Elementarpartikelfysik)
2010 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 693, no 5, 515-521 p.Article in journal (Refereed) Published
Abstract [en]

We present a measurement of the differential cross section for events produced in collisions at as a function of the transverse momentum (pT) of the top quark. The selected events contain a high-pT lepton (), 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 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.

Place, publisher, year, edition, pages
2010. Vol. 693, no 5, 515-521 p.
Keyword [en]
Top quark, Differential cross sections, Perturbative QCD
National Category
Subatomic Physics
Research subject
URN: urn:nbn:se:su:diva-47322DOI: 10.1016/j.physletb.2010.09.011ISI: 000283701300002OAI: diva2:373636
Swedish Research Council
Publikationen har totalt 466 författare, V. Abazov et al.Available from: 2010-12-01 Created: 2010-12-01 Last updated: 2011-11-21Bibliographically approved

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Åsman, Barbro
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