The lepton flavor universality violating (LFUV) measurements \(R_K\) and \(R_{K^*}\) in B meson decays can be accounted for in non-universal \(Z'\) models. We constrain the couplings of these \(Z'\) models by performing a global fit to correlated \(b \rightarrow s \ell \ell \) and \(b \rightarrow d \ell \ell \) processes, and calculate their possible implications for \(B_s \rightarrow {\bar{K}}^*\ell \ell \) observables. For real new physics (NP) couplings, the 1\(\sigma \) favored parameters allow the corresponding LFUV ratio \(R_{K^*}^{(s)}\) in \(B_s \rightarrow {\bar{K}}^*\ell \ell \) to range between 0.8 and 1.2 at low \(q^2\). Complex NP couplings improve the best fit only marginally, however they allow a significant enhancement of the branching ratio, while increasing the range of \(R_{K^*}^{(s)}\ \)at low \(q^2\) to 0.8–1.8. We find that NP could cause zero-crossing in the forward–backward asymmetry \(A_{FB}\) to shift towards lower \(q^2\) values, and enhancement in the magnitude of integrated \(A_{FB}\). The CP asymmetry \(A_{CP}\) may be suppressed and even change sign. The simultaneous measurements of integrated \(R_{K^*}^{(s)}\ \)and \(A_{CP}\) values to 0.1 and 1% respectively, would help in constraining the effective NP Wilson coefficient \(C_9\) in \( b \rightarrow d \mu \mu \) interactions.

中文翻译：

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非通用$$ Z'$$ Z'模型中$$ B_s \ rightarrow {\ bar {K}} ^ * \ ell \，\ ell $$ Bs→K¯ℓℓ的预测

轻子味普遍性违反（LFUV）测量\（R_K \）和\（R_ {K ^ *} \）在乙介子衰变可以在非通用占到\（Z'\）模型。我们通过对相关的\（b \ rightarrow s \ ell \ ell \）和\（b \ rightarrow d \ ell \ ell \）过程执行全局拟合来约束这些\（Z'\）模型的耦合，并计算它们的\（B_s \ rightarrow {\ bar {K}} ^ * \ ell \ ell \）观测值的可能含义。对于真正的新的物理（NP）联轴器，1 \（\西格玛\）青睐参数允许对应LFUV比\（R_ {K ^ *} ^ {（S）} \）在\（B_s \ rightarrow {\ bar {K}} ^ * \ ell \ ell \）在低\（q ^ 2 \）时在0.8到1.2之间。复杂的NP耦合仅略微改善了最佳拟合，但是它们允许显着提高分支比，同时在低\（q ^ 2 ）的情况下扩大了\（R_ {K ^ *} ^ {（s}} \ \）的范围\）到0.8–1.8。我们发现，NP可能导致向前和向后不对称\（A_ {FB} \）的过零现象朝着更低的\（q ^ 2 \）值偏移，从而增强了积分\（A_ {FB} \ ）。的CP不对称\（A_ {CP} \）可以被抑制，甚至改变符号。集成\（R_ {K ^ *} ^ {{s}} \ \ \）的同时测量和\（A_ {CP} \）的值至0.1和1％分别将在限制有效的NP系数威尔逊帮助\（C_9 \）在\（B \ RIGHTARROW d \亩\亩\）的相互作用。