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arXiv 1302.5316hep-ph
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在LHC和Tevatron上产生$t \bar t$中夸克的手征色对称性和$G'$玻色子对电荷不对称性的贡献

The chiral color symmetry of quarks and $G'$-boson contributions to charge asymmetry in $t \bar t$-production at the LHC and Tevatron

I. V. Frolov, M. V. Martynov, A. D. Smirnov

备注：
11 pages, 3 figures, accepted for publication in Modern Physics Letters A; v2: corrected misprint, added references
发表信息：
Mod. Phys. Lett. A, Vol. 28, No. 10 (2013) 1350035
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摘要：

计算并分析了夸克手征色对称性预言的$G'$玻色子对LHC产生$t \bar{t}$中电荷不对称性$A_C(p p \to t\bar{t})$和Tevatron产生$t\bar{t}$中前后不对称性$A_{\rm FB}(p\bar{p} \to t\bar{t})$的贡献，并与模型的两个自由参数$G'$质量$m_{G'}$和混合角$θ_G$有关. $1 σ$的$m_{G'} - θ_G$区域与横截面$σ(pp \to t\bar{t})$和电荷不对称性$A_C(p p \to t\bar{t})$上的CMS数据一致，并与Tevatron上横截面$σ(p\bar{p} \to t\bar{t})$和$t \bar{t}$产生的前后不对称性$A_{\rm FB}(p\bar{p} \to t\bar{t})$上的CDF数据进行比较，并考虑到当前SM对$A_{\rm FB}(p\bar{p} \to t\bar{t})$的预测。

英文摘要：

The contributions of $G'$-boson predicted by the chiral color symmetry of quarks to the charge asymmetry $A_C(p p \to t\bar{t})$ in $t \bar{t}$ production at the LHC and to the forward-backward asymmetry $A_{\rm FB}(p\bar{p} \to t\bar{t})$ in $t\bar{t}$ production at the Tevatron are calculated and analysed in dependence on two free parameters of the model, the $G'$ mass $m_{G'}$ and mixing angle $θ_G$. The $m_{G'} - θ_G$ regions of $1 σ$ consistency with the CMS data on the cross section $σ(pp \to t\bar{t})$ and on the charge asymmetry $A_C(p p \to t\bar{t})$ are found and compared with those resulted from the CDF data on the cross section $σ(p\bar{p} \to t\bar{t})$ and on the forward-backward asymmetry $A_{\rm FB}(p\bar{p} \to t\bar{t})$ of $t \bar{t}$ production at the Tevatron with account of the current SM predictions for $A_{\rm FB}(p\bar{p} \to t\bar{t})$.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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