$b \to s \ell^+ \ell^-$中轻子非普适性的更多证据
More Indications for Lepton Nonuniversality in $b \to s \ell^+ \ell^-$
摘要：
最近，LHCb合作组通过对$R_K$的最新测量，证实了在$3.1σ$水平上轻子味非普适性的证据。在这项工作中，我们在一个模型独立的方法来分析这个证据。我们对未来的测量进行了预测，这表明LHCb将能够在一个单一的可观测数据中发现轻子非普适性。我们分析其他比率的基础上，我们的分析目前的测量值的比率$R_{K^{(*)}}$和分析，如果他们能够区分各种新的物理选项内的有效场论在目前或不久的将来。我们还比较了目前的偏差的比率与NP指示的角度观测值的独家$b \to s \ell\ell$过渡。最后，我们更新我们的全球分析，考虑所有的$b \to s \ell\ell$观测，包括20个参数的Wilks'测试连接。
英文摘要：
Recently the LHCb collaboration has confirmed the evidence for lepton flavour nonuniversality at the $3.1σ$ level via an updated measurement of $R_K$. In this work we analyse this evidence within a model-independent approach. We make projections for future measurements which indicate that LHCb will be in the position to discover lepton nonuniversality with the Run 3 data in a single observable. We analyse other ratios based on our analysis of the present measurements of the ratios $R_{K^{(*)}}$ and analyse if they are able to differentiate between various new physics options within the effective field theory at present or in the near future. We also compare the present deviations in the ratios with NP indications in the angular observables of exclusive $b \to s \ell\ell$ transitions. Finally, we update our global analysis considering all $b \to s \ell\ell$ observables altogether, including a 20-parameter fit in connection of a Wilks' test.
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