Forward-backward asymmetry of the top quark in diquark models

Abdesslam Arhrib; Rachid Benbrik; Chuan Hung Chen

doi:10.1103/PhysRevD.82.034034

Forward-backward asymmetry of the top quark in diquark models

Abdesslam Arhrib, Rachid Benbrik, Chuan Hung Chen

Department of Physics

Research output: Contribution to journal › Article › peer-review

92 Citations (Scopus)

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 language	English
Article number	034034
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	82
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevD.82.034034
Publication status	Published - 2010 Aug 26

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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10.1103/PhysRevD.82.034034

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AB - 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.

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Forward-backward asymmetry of the top quark in diquark models

Abstract

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