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arXiv 1104.4782hep-phhep-ex
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从规范味对称性看顶夸克不对称性和CDF的Wjj过剩

Top quark asymmetry and Wjj excess at CDF from gauged flavor symmetry

K. S. Babu, Mariana Frank, Santosh Kumar Rai

摘要:

我们表明,所需的费米子质量生成的标量部门时,味道对称性的标准模型是最大限度地衡量可以一贯地解释两个异常的CDF合作最近报道的-向前向后不对称的t-tbar对生产,和dijet不变质量的Wjj通道。一对质量在150-200 GeV之间的近简并标量双峰解释了这些异常,并预测了质量在100-400 GeV之间的标量。这种低规模的味道物理与味道变化过程的一致性,并概述了对LHC的期望。

英文摘要:

We show that the scalar sector needed for fermion mass generation when the flavor symmetry of the standard model is maximally gauged can consistently explain two anomalies reported recently by the CDF collaboration - the forward-backward asymmetry in t-tbar pair production, and the dijet invariant mass in the Wjj channel. A pair of nearly degenerate scalar doublets with masses in the range 150-200 GeV explain these anomalies, with additional scalars predicted in the mass range 100-400 GeV. Consistency of such low scale flavor physics with flavor changing processes is shown, and expectations for the LHC are outlined.

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