论文标题
改进的理论预测和全局分析$ \ boldsymbol {b \ tosμ^+μ^ - } $过程
Improved Theory Predictions and Global Analysis of Exclusive $\boldsymbol{b\to sμ^+μ^-}$ Processes
论文作者
论文摘要
我们为专有的稀有半二元过程$ b \ to k^{（*）}μ^+μ^ - $和$ b_s \ toxountic^+μ^ - $提供了改进的标准模型理论预测。我们的结果基于非本地形式因素的新参数化，该因素明显尊重最近开发的分散结合。我们将我们的预测与在QCD分解框架中获得的预测进行了严格的比较。我们的预测首次提供了由于非本地贡献而导致的系统不确定性的参数估计。将我们在标准模型中的预测与可用的实验数据进行比较，我们发现$ b \ \^+μ^ - $的较大张力。超出标准模型的潜在效果的简单独立分析可产生与其他方法兼容的结果，尽管对于$ b \ to $ b \ to K^*μ^+μ^ - $和$ b_s \ to ϕμ^+μ^ - $衰减的不确定性较大。我们的方法会产生系统上改进的预测，我们期待其在超出标准模型之外的进一步分析中的应用。
We provide improved Standard Model theory predictions for the exclusive rare semimuonic processes $B\to K^{(*)}μ^+μ^-$ and $B_s\toϕμ^+μ^-$. Our results are based on a novel parametrization of the non-local form factors, which manifestly respects a recently developed dispersive bound. We critically compare our predictions to those obtained in the framework of QCD factorization. Our predictions provide, for the first time, parametric estimates of the systematic uncertainties due to non-local contributions. Comparing our predictions within the Standard Model to available experimental data, we find a large tension for $B\to Kμ^+μ^-$. A simple model-independent analysis of potential effects beyond the Standard Model yields results compatible with other approaches, albeit with larger uncertainties for the $B\to K^*μ^+μ^-$ and $B_s\to ϕμ^+μ^-$ decays. Our approach yields systematically improvable predictions, and we look forward to its application in further analyses beyond the Standard Model.
