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arXiv 0710.4293hep-ph
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关于最小希格斯模型的味结构

On the flavor structure of the littlest Higgs model

Svjetlana Fajfer, Jernej F. Kamenik

摘要:

我们调查的汤川部门在李的版本的最小希格斯模型的类夸克。我们推导了一般的夸克质量和混合公式,并研究了非零轻夸克质量对主序的贡献。依靠广义夸克混合矩阵的么正性,我们得到了CKM矩阵元的修正。在这个模型中,FCNC出现在树的水平,并使用领先的订单的贡献,我们得到的FCNC耦合的类上夸克跃迁。根据最近的实验结果的D 0-D 0 bar过渡,我们预测xD以及D到μ + μ-衰变率。最后,我们讨论了与LHC研究相关的t到c(u)Z跃迁的概率。

英文摘要:

We investigate the Yukawa sector for up-like quarks in the Lee's version of the Littlest Higgs model. We derive general quark mass and mixing formulae and study leading order contributions due to non-zero light quark masses. Relying on the unitarity of the generalized quark mixing matrix we obtain corrections to the CKM matrix elements. In this model FCNCs appear at the tree level and using leading order contributions we obtain the FCNC couplings for the up-like quark transitions. In light of recent experimental results on the D0 - D0bar transition we make predictions for xD as well as the D to mu+ mu- decay rate. Finally, we discuss probabilities for the t to c (u) Z transitions relevant for the LHC studies.

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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