论文标题

向s \ ell^+\ ell^ - $解释$ b \ $和带有矢量三重态的cabibbo角度异常

Explaining $b\to s\ell^+\ell^-$ and the Cabibbo Angle Anomaly with a Vector Triplet

论文作者

Capdevila, Bernat, Crivellin, Andreas, Manzari, Claudio Andrea, Montull, Marc

论文摘要

在风味领域,新物理学的最统计学意义是$ b $ $ $ $ $ $ b $ niw to Lepton Pairs($ b \ to s \ ell^+\ ell^ - $)之间的差异和$ 1^{\ rm ST} $ ckm ckm ckm unitarity(the bbobo beanbbo angle Anomaly)的不足。我们建议这些异常可以通过简化的模型来调和,并在$ su(2)_l $的伴随表示中转换大量的玻色子。在计算了该模型对$ b $衰减的影响之后,可观察的测试充电当前的Lepton风味通用性(LFU),Electro-Weak Precision可观测值和LHC搜索我们对所有可用数据进行全球拟合。我们发现,我们的模型可以提供对异常的一致共同说明,并且对数据的拟合度比SM的拟合度好7美元以上。该模型还预测了带电电流中的LFU违规与$ b \ to s \ ell^+\ ell^ - $数据之间的有趣相关性,这些数据可以在不久的将来进行实验测试。

The most statistically significant hints for new physics in the flavor sector are discrepancies between theory and experiment in $B$ decays to lepton pairs ($b\to s\ell^+\ell^-$) and a deficit in $1^{\rm st}$ row CKM unitarity (the Cabibbo Angle anomaly). We propose that these anomalies can be reconciled by a simplified model with massive gauge bosons transforming in the adjoint representation of $SU(2)_L$. After calculating the impact of this model on $B$ decays, observables testing charged current lepton flavor universality (LFU), electro-weak precision observables and LHC searches we perform a global fit to all available data. We find that our model can provide a consistent common explanation of both anomalies and that the fit to the data is more than $7\,σ$ better than the fit of the SM. The model also predicts interesting correlations between LFU violation in the charged current and $b\to s\ell^+\ell^-$ data which can be tested experimentally in the near future.

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