Chiral color symmetry and $G'$-boson mass limit from Tevatron data on $t \bar t$-production

M. V. Martynov; A. D. Smirnov

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arXiv · 1010.5649

Chiral color symmetry and $G'$-boson mass limit from Tevatron data on $t \bar t$-production

M. V. Martynov·A. D. Smirnov

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Abstract

A gauge model with chiral color symmetry of quarks is considered and possible effects of the color $G'$-boson octet predicted by this symmetry are investigated. The contributions of the $G'$-boson to the cross section $\sigma_{t\bar{t}}$ and to the forward-backward asymmetry $A_{\rm FB}^{p \bar p}$ of $t\bar{t}$ production at the Tevatron are calculated and analysed in dependence on two free parameters of the model, the mixing angle $\theta_G$ and $G'$ mass $m_{G'}$. The $G'$-boson contributions to $\sigma_{t\bar{t}}$ and $A_{\rm FB}^{p \bar p}$ are shown to be consistent with the Tevatron data on $\sigma_{t\bar{t}}$ and $A_{\rm FB}^{p \bar p}$, the allowed region in the $m_{G'} - \theta_G$ plane is discussed and around $m_{G'}=1.2 \, TeV, \; \theta_G=14^\circ $ the region of $1 \sigma$ consistency is found.

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M. V. Martynov, A. D. Smirnov. 2010-10-27. Chiral color symmetry and $G'$-boson mass limit from Tevatron data on $t \bar t$-production. https://arxiv.org/abs/1010.5649

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