期刊
EUROPEAN PHYSICAL JOURNAL C
卷 59, 期 3, 页码 625-646出版社
SPRINGER
DOI: 10.1140/epjc/s10052-008-0816-y
关键词
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We report on the calculation of the next-to-leading order QCD corrections to the production of top-antitop-quark pairs in association with a hard jet at the Tevatron and at the LHC. Results for integrated and differential cross sections are presented. We find a significant reduction of the scale dependence. In most cases the corrections are below 20% indicating that the perturbative expansion is well under control. Moreover, the forward-backward charge asymmetry of the top quark, which is analyzed at the Tevatron, is studied at next-to-leading order. We find large corrections, suggesting that the definition of the observable has to be refined.
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