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arXiv 1208.4675hep-ph
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味相关手性U(1)'模型中的Top A_{FB}和电荷不对称性

Top A_{FB} and charge asymmetry in flavor-dependent chiral U(1)' model

P. Ko, Yuji Omura, Chaehyun Yu

摘要:

我们研究了味相关手征U(1)“模型,其中只有右手向上型夸克在U(1)$^\prime$下带电,并引入额外的带U(1)”电荷的Higgs二重态以给出适当的Yukawa相互作用.我们发现,在某些参数范围内,该模型不仅与Tevatron的顶部前后不对称相适应,而且与LHC的电荷不对称相适应。同时,在这个模型中,同号顶夸克对产生的截面可能低于LHC的上限。

英文摘要:

We study the flavor-dependent chiral U(1)' model where only the right-handed up-type quarks are charged under U(1)$^\prime$ and additional Higgs doublets charged with U(1)' charges are introduced to give proper Yukawa interactions. We find that in some parameter regions, this model is not accommodated only with the top forward-backward asymmetry at the Tevatron, but also with the charge asymmetry at the LHC. At the same time, the cross section for the same-sign top-quark pair production in this model could be below the upper limit at the LHC.

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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