用GAMBIT的FlavBit分析$b \to s μ^+ μ^-$跃迁的模型无关性
A model-independent analysis of $b \to s μ^+ μ^-$ transitions with GAMBIT's FlavBit
摘要：
在$B$介子衰变中寻找变味中性流效应是对标准模型之外物理的一个强有力的探索。从SM行为的偏差往往量化提取的威尔逊系数的运营商产品的扩展的首选值。我们使用GAMBIT软件包的FlavBit模块，使用$b \to s μ^+ μ^-$转换的所有当前数据的组合来执行Wilson系数$C_7$、$C_9$和$C_{10}$的同时全局拟合。我们进一步扩展了以前的分析占威尔逊系数参数空间中的每一点的相关理论的不确定性，而不是从标准模型计算得出的不确定性。我们发现最佳拟合偏离SM值的显著性为6.6 $σ$。最大的偏差与μ子与$b$和$s$夸克的矢量耦合有关。
英文摘要：
The search for flavour-changing neutral current effects in $B$-meson decays is a powerful probe of physics beyond the Standard Model. Deviations from SM behaviour are often quantified by extracting the preferred values of the Wilson coefficients of an operator product expansion. We use the FlavBit module of the GAMBIT package to perform a simultaneous global fit of the Wilson coefficients $C_7$, $C_9$, and $C_{10}$ using a combination of all current data on $b \to s μ^+ μ^-$ transitions. We further extend previous analyses by accounting for the correlated theoretical uncertainties at each point in the Wilson coefficient parameter space, rather than deriving the uncertainties from a Standard Model calculation. We find that the best fit deviates from the SM value with a significance of 6.6$σ$. The largest deviation is associated with a vector coupling of muons to $b$ and $s$ quarks.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
