论文标题
$ b \ tosμ^+μ^ - 与gambit的黄度的过渡无关模型的分析
A model-independent analysis of $b \to s μ^+ μ^-$ transitions with GAMBIT's FlavBit
论文作者
论文摘要
在$ b $ -Meson衰减中寻找改变风味的中性电流效果是对标准模型以外的物理的强大探测。通常通过提取操作员产品扩展的Wilson系数的优选值来量化与SM行为的偏差。我们使用gambit包的口号模块，同时执行威尔逊系数的全局拟合$ C_7 $，$ C_9 $和$ C_ {10} $，使用$ b \ tosμ^+μ^ - $ transitions的所有当前数据组合。我们通过考虑Wilson系数参数空间中每个点相关的理论不确定性来进一步扩展以前的分析，而不是从标准模型计算中得出不确定性。我们发现，最佳拟合度与SM值的偏差为6.6 $σ$。最大的偏差与Muons至$ b $和$ s $ Quarks的矢量耦合有关。
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.
