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arXiv 1505.03079hep-phhep-ex
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具有受保护的变味相互作用的族非泛Z'模型

Family non-universal Z' models with protected flavor-changing interactions

Alejandro Celis, Javier Fuentes-Martin, Martin Jung, Hugo Serodio

摘要:

我们定义了一类新的$Z'$模型,在树的水平下夸克部门的中性变味的相互作用。它们与夸克混合矩阵的元素有着精确的联系,这是由于潜在的有味道的$U(1)'$规范对称性,使得这些模型特别具有预测性。同样的对称性意味着轻子味的非万有耦合,完全由模型的规范结构决定。我们的模型可以解决目前观察到的偏离SM和特定的相关性之间的新的物理贡献的威尔逊系数$C_{9,10}^{(\prime) \ell}$可以测试在$b \to s \ell^+ \ell^-$过渡。我们还预测了在$Z'$衰变中轻子普适性的违反,可在LHC中检验。

英文摘要:

We define a new class of $Z'$ models with neutral flavor-changing interactions at tree level in the down-quark sector. They are related in an exact way to elements of the quark mixing matrix due to an underlying flavored $U(1)'$ gauge symmetry, rendering these models particularly predictive. The same symmetry implies lepton-flavor non-universal couplings, fully determined by the gauge structure of the model. Our models allow to address presently observed deviations from the SM and specific correlations among the new physics contributions to the Wilson coefficients $C_{9,10}^{(\prime) \ell}$ can be tested in $b \to s \ell^+ \ell^-$ transitions. We furthermore predict lepton-universality violations in $Z'$ decays, testable 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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