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arXiv 0906.4525hep-ph
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Tevatron和LHC的手征色对称性和可能的$G'$玻色子效应

Chiral color symmetry and possible $G'$-boson effects at the Tevatron and LHC

M. V. Martynov, A. D. Smirnov

摘要:

考虑了一个具有手征色对称性的规范模型,研究了由这种对称性预测的色$G'$ -玻色子八重态对两个自由参数$θ_G$和$G'$质量$m_{G'}$的影响. $m_{G'} - θ_G$平面中的允许区域是从$t\bar{t}$产品的横截面$σ_{t\bar{t}}$和前后不对称性$A_{\rm FB}^{p \bar p}$上的Tevatron数据中找到的。$G'$ -玻色子的质量极限被证明是强于轴胶子。讨论了$G'$ -玻色子对LHC产生$t\bar{t}$的可能影响,并根据$θ_G$估计了LHC产生$G'$ -玻色子的质量极限.

英文摘要:

A gauge model with chiral color symmetry is considered and possible effects of the color $G'$-boson octet predicted by this symmetry are investigated in dependence on two free parameters, the mixing angle $θ_G$ and $G'$ mass $m_{G'}$. The allowed region in the $m_{G'} - θ_G$ plane is found from the Tevatron data on the cross section $σ_{t\bar{t}}$ and forward-backward asymmetry $A_{\rm FB}^{p \bar p}$ of the $t\bar{t}$ production. The mass limits for the $G'$-boson are shown to be stronger than those for the axigluon. A possible effect of the $G'$-boson on the $t\bar{t}$ production at the LHC is discussed and the mass limits providing for the $G'$-boson evidence at the LHC are estimated in dependence on $θ_G$.

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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