Anomalous Wtb coupling and forward-backward asymmetry of top quark production at the Tevatron

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• 作者：K. Koł ; odziej ^{karol.kolodziej@us.edu.pl}
• 刊名：Physics Letters B
• 出版年：2012
• 期刊代码：58_03702693
• 类别：ph
• 出版时间：20 April, 2012
• 卷：710
• 期：4-5
• 页码：671-675
• 文件大小：335 K

摘要

An influence of the anomalous Wtb coupling on forward-backward asymmetry in top quark pair production at the Tevatron is investigated taking into account decays of the top quarks to 6 fermion final states containing one charged lepton. To this end the most general effective Lagrangian of the Wtb interaction containing terms of dimension up to five is implemented into carlomat, a general purpose Monte Carlo program, which allows to compute automatically all necessary cross sections in the presence of anomalous vector and tensor form factors. A sample of results which illustrate little effect of the left- and right-handed tensor form factors on the invariant mass dependent forward-backward asymmetry and the charge-signed rapidity distribution of the lepton originating from the W boson from top quark decay is shown.