论文标题
部分可观测时空混沌系统的无模型预测
A global analysis of $b \to s \ell \ell$ data in heavy and light $Z'$ models
论文作者
论文摘要
We perform a model-independent global fit to all $b \to s \ell \ell$ data in the light of recent measurements of the lepton flavour universality violating (LFUV) observables $R_{K_S^0}$ and $R_{K^{*+}}$ as well as the updated measurements of observables in $B_s \to ϕμ^+ μ^-$ decay, by the LHCB合作。我们仅假设仅在MUON部门中的NP获得了数据中当前异常的新物理（NP）溶液。我们发现1D NP方案$ C_9^{\ rm np} <0 $和$ c_ {9}^{\ rm np} = - c_ c_ {10}^{\ rm np} $继续是最喜欢的人。但是，当时偏爱的方案$ c_ {9}^{\ rm np} = - c'_ {9} $的重要性已减少，现在更新的数据现在略微优先$ c_ {10}^{\ rm np} $ c_ {} $ c_ {9}^{$ np} $ np} 2D方案$（c_9^{\ rm np}，c_ {10}^{\ prime}）$，$（c_9^{\ rm np}，c_ {9}^{\ prime}在列出的顺序中受到数据的青睐。我们还分析了通用TEV比例$ z'$模型，该模型可以生成受欢迎的1D场景，$ C_9^{\ rm np} $和$ C_9^{\ rm np} = -c_ {10}^{\ rm np np} c_ {9}^{\ prime}）$和$（c_9^{\ rm np}，c_ {10}^{\ rm np}）$。使用$ b_s- \ bar {b_s} $混合和中微子三叉戟数据中的其他约束，我们发现所有四个模型都提供了同样良好的数据。此外，我们考虑了一个型号，该模型与穆斯夫人并具有$ q^2 $依赖的$ b -s $耦合。我们还研究了当前数据对LFUV观察$ r_ϕ $，$ q_ {4,5} $以及$ r_ {k^{（*）}} $在高$ q^2 $中的含义。我们发现，这些可观察物的精确度量可以在少数偏爱的模型无关的解决方案之间提供良好的歧视，并有可能在这项工作中考虑不同的重型和轻度$ z'$方案。
We perform a model-independent global fit to all $b \to s \ell \ell$ data in the light of recent measurements of the lepton flavour universality violating (LFUV) observables $R_{K_S^0}$ and $R_{K^{*+}}$ as well as the updated measurements of observables in $B_s \to ϕμ^+ μ^-$ decay, by the LHCb collaboration. We obtain new physics (NP) solutions to the current anomalies in the data, assuming NP in the muon sector only. We find that the 1D NP scenarios $C_9^{\rm NP} <0 $ and $C_{9}^{\rm NP}=-C_{10}^{\rm NP}$ continue to be the most favoured ones. However, the significance of the then favoured scenario $C_{9}^{\rm NP}=-C'_{9}$ has reduced and the updated data now marginally prefers $C_{10}^{\rm NP}$ scenario over $C_{9}^{\rm NP}=-C'_{9}$. The 2D scenarios $(C_9^{\rm NP}, C_{10}^{\prime} )$, $(C_9^{\rm NP}, C_{9}^{\prime} )$ and $(C_9^{\rm NP}, C_{10}^{\rm NP} )$, continue to be favoured by the data in the listed order. We also analyse generic TeV scale $Z'$ models which can generate the favored 1D scenarios, $C_9^{\rm NP} $ and $C_9^{\rm NP} = -C_{10}^{\rm NP}$ along with the 2D NP scenarios $(C_9^{\rm NP}, C_{9}^{\prime} )$ and $(C_9^{\rm NP}, C_{10}^{\rm NP} )$. Using the additional constraints from $B_s -\bar{B_s}$ mixing and neutrino trident data, we find that all four models provide an equally good fit to the data. Further, we consider a model with a 25 MeV $Z'$ that couples to muons and has a $q^2$ dependent $b - s$ coupling. We also study the implications of the current data on the LFUV observable $R_ϕ$, $Q_{4,5}$ along with $R_{K^{(*)}}$ in the high $q^2$. We find that a precise measurements of these observables can provide a good discrimination between a few favored model-independent solutions, and have a potential to disentangle different heavy and light $Z'$ scenarios considered in this work.
