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Abstract: We discuss the production of top-anti-top quark pairs in association with ahard jet at the Tevatron and at the LHC and we report on the calculation of thenext-to-leading order QCD corrections to this process. Numerical results forthe top-anti-top+jet cross section and the forward-backward charge asymmetryare presented. The corrections stabilize the leading-order prediction for thecross section. In contrast, the charge asymmetry receives large corrections.The dependence of the cross section as well as the asymmetry on the minimumtransverse momenta used to define the additional jet is studied in detail forthe Tevatron.



Autor: Stefan Dittmaier, Peter Uwer, Stefan Weinzierl

Fuente: https://arxiv.org/







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