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arXiv · 0911.4875

Forward-backward asymmetry of top quark in diquark models

Abdesslam Arhrib·Rachid Benbrik·Chuan-Hung Chen
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Abstract

Motivated by the recent unexpected large forward-backward asymmetry (FBA) of the top quark observed by D$Ø$ and CDF at the Tevatron, we investigate a possible explanation for the anomaly within the framework of diquark models. Unlike other mechanisms induced by s-channel or t-channel, the top-quark pair production in the diquark models is dictated by the u-channel diagram. We find that the color-triplet diquark can generate the FBA of 20% when the constraint from the cross section of the top-quark pair production is taken into account.

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Abdesslam Arhrib, Rachid Benbrik, Chuan-Hung Chen. 2010-08-30. Forward-backward asymmetry of top quark in diquark models. https://doi.org/10.1103/physrevd.82.034034

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