Forward-backward asymmetry of the 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 of the top-quark observed by D0 and CDF at the Tevatron, we investigate a possible explanation for the anomaly within the framework of diquark models. In the diquark models, the top-quark pair production is mediated by the u-channel diagram. It is found that the color-triplet diquark can generate the forward-backward asymmetry of 20% when the constraint from the cross section of the top-quark pair production is taken into account.

Original languageEnglish
Article number034034
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume82
Issue number3
DOIs
Publication statusPublished - 2010 Aug 26

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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