arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 2005.13542hep-phhep-exhep-latnucl-exnucl-th
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用矢量三元组解释$b\to s\ell^+\ell^-$和Cabibbo角异常

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

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

摘要:

在味道领域,新物理学最有统计意义的线索是$B$衰变为轻子对($b\to s\ell^+\ell^-$)的理论和实验之间的差异,以及$1^{\rm st}$行CKM么正性的不足(卡比博角异常)。我们建议,这些异常可以调和的一个简化模型与大量的规范玻色子变换的伴随表示的$SU(2)_L$。在计算了该模型对$B$衰变、带电轻子味普适性(LFU)观测量、电弱精密观测量和LHC搜索的影响后,我们对所有可用数据进行了全局拟合。我们发现,我们的模型可以提供一个一致的共同解释这两个异常,适合的数据是超过$7\,σ$比适合的SM。该模型还预测了有趣的LFU违反之间的相关性,在充电电流和$b\to s\ell^+\ell^-$数据,可以在不久的将来进行实验测试。

英文摘要:

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.

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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