Forward-backward asymmetry and the differential cross section of the top quark in the flavor violating ${Z}^{\ensuremath{'}}$ model at $\mathcal{O}({\ensuremath{\alpha}}_{s}^{2}{\ensuremath{\alpha}}_{X})$

Forward-backward asymmetry and the differential cross section of the top quark in the flavor violating $Z^{'}$ model at $O (α_{s}^{2} α_{X})$

Bo Xiao, You-kai Wang, and Shou-hua Zhu

Phys. Rev. D 82, 034026 – Published 19 August 2010

Abstract

In this paper, forward-backward asymmetry and differential cross section of top quark in flavor violating $Z^{'}$ model up to $O (α_{s}^{2} α_{X})$ at Tevatron are calculated. In order to account for the top observed large forward-backward asymmetry, the new coupling $g_{X}$ among $Z^{'}$ and quarks will be not much less than strong coupling constant $g_{s}$ . After including the new higher order correction, the differential cross section can fit the data better than those only including the leading contributions from $Z^{'}$ , while the forward-backward asymmetry is still in agreement with the measurement.

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Received 23 June 2010

DOI:https://doi.org/10.1103/PhysRevD.82.034026

Authors & Affiliations

Bo Xiao^1,*, You-kai Wang^1,†, and Shou-hua Zhu^1,2,‡

¹Institute of Theoretical Physics State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
²Center for High Energy Physics, Peking University, Beijing 100871, China

^*homenature@pku.edu.cn
^†wangyk@pku.edu.cn
^‡aiwen_fan@pku.edu.cn

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Vol. 82, Iss. 3 — 1 August 2010

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Physical Review D

covering particles, fields, gravitation, and cosmology

Forward-backward asymmetry and the differential cross section of the top quark in the flavor violating $Z^{'}$ model at $O (α_{s}^{2} α_{X})$

Bo Xiao, You-kai Wang, and Shou-hua Zhu

Phys. Rev. D 82, 034026 – Published 19 August 2010

Abstract

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Physical Review D

covering particles, fields, gravitation, and cosmology

Forward-backward asymmetry and the differential cross section of the top quark in the flavor violating Z′ model at O(αs2αX)

Bo Xiao, You-kai Wang, and Shou-hua Zhu

Phys. Rev. D 82, 034026 – Published 19 August 2010

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Forward-backward asymmetry and the differential cross section of the top quark in the flavor violating $Z^{'}$ model at $O (α_{s}^{2} α_{X})$