论文标题
$ b_s \，\ to \，f_ {2}'\，（1525）\，（\ to k^+ \，k^ - ）\，μ^+ \，μ^ - $ n-
Angular analysis of $B_s\, \to\, f_{2}'\,(1525)\,(\to K^+\,K^-)\,μ^+ \,μ^-$ decays as a probe to lepton flavor universality violation
论文作者
论文摘要
$ r_k $，$ r_ {k^*} $，$ p_ {5}^{\ prime} $和$ \ mathcal {b}（b_s \，\ to \ to \ to \ to \，μ^+，μ^+\，μ^ - ）$ in+s y+水平过渡衰减。目前在基本风味可观察物中报告的SM预测的偏差分别为$2.5σ$，$2.4σ$，$3.3σ$和$3.7σ$。在这种情况下，我们对$ b_s \，\ to \ to \，f_ {2}^{\ prime} \，（1525）\，（\ to k^+ \，k^ - ）\，μ^+ \ \ \，μ^+ \，μ^ - $在模型独立的框架中。衰减模式$ b_s \，\ to \，f_ {2}^{\ prime}（\ prime}（1525）\，l^+\，l^ - $经历类似的$ b \ to s $中性当前的Quark水平过渡，原则上可以提供有关$ B \ q \ q \ quark in triperational Intriperational l^+s l^+f^+f^+f^+f^+f^+f^+\ f^+。我们给出了各种物理可观察物的预测，例如分支比率，纵向极化部分，前向不对称的不对称性，Angular Observables $ P_1 $，$ P_2 $，$ P_ {4}^{\ PRIME} $，$ P_ $ r_ {f_ {2}^{\ prime}} $，$ q_ {f_l} $，$ q_ {a_ {a_ {fb}} $，$ q_ {1} $，$ q_ {2} $，$ q_ {4} \ to \，f_ {2}^{\ prime} \，（1525）\，（\ to k^+ \，k^ - ）\，μ^+ \，μ^ - $ $ $^ - 在标准模型中衰减，并且在几种1d和2d的新物理场景中存在。
The flavor anomalies reported in $R_K$, $R_{K^*}$, $P_{5}^{\prime}$ and $\mathcal{B}(B_s\, \to\, ϕ\, μ^+\, μ^-)$ indicate lepton flavor universality violation in $b \to s\,l^+\,l^-$ quark level transition decays. The deviation from the SM prediction reported in the underlying flavor observables currently stand at the level of $2.5σ$, $2.4σ$, $3.3σ$ and $3.7σ$, respectively. In this context, we perform an angular analysis of the four-body differential decay of $B_s\, \to\, f_{2}^{\prime}\,(1525)\,(\to K^+\,K^-)\,μ^+ \,μ^-$ in a model independent effective field theory framework. The decay mode $B_s\, \to\, f_{2}^{\prime}(1525)\,l^+\,l^-$ undergoes similar $b \to s$ neutral current quark level transition and, in principle, can provide complementary information regarding lepton flavor universality violation in $b \to s\,l^+\,l^-$ quark level transition decays. We give predictions of various physical observables such as the branching ratio, the longitudinal polarization fraction, the forward-backward asymmetry, the angular observables $P_1$, $P_2$, $P_{4}^{\prime}$, $P_{5}^{\prime}$ and also the lepton flavor sensitive observables such as the ratio of branching ratio $R_{f_{2}^{\prime}}$, $Q_{F_L}$, $Q_{A_{FB}}$, $Q_{1}$, $Q_{2}$, $Q_{4}^{\prime}$, $Q_{5}^{\prime}$ for $B_s\, \to\, f_{2}^{\prime}\,(1525)\,(\to K^+\,K^-)\,μ^+ \,μ^-$ decays in the standard model and in the presence of several 1D and 2D new physics scenarios.
