论文标题
$ r（k^{（*）}）$中的树级新物理
Tree-level new physics in $R(K^{(*)})$
论文作者
论文摘要
我们在$ r（k^{（*）}）$中实现$χ^2 $拟合，并在模型无关的参数化中使用可能的树级新物理学。相关的威尔逊系数分解为新的物理量表，其功率和费米子耦合。 $ B_S \至μ^+μ^ - $的分支比率的约束自然可以与该方案合并。对于合理的参数范围，发现新物理学小于$ \ sim 5〜 {\ rm tev} $。在我们的框架内可以接受一些新的物理模型，包括leptoquark，$ z'$等。我们对与标准模型预测接近的新LHCB数据发表评论。
We implement the $χ^2$ fit for $R(K^{(*)})$ with possible tree-level new physics in a model-independent parametrization. Relevant Wilson coefficients are decomposed into the new physics scale, its power, and the fermionic couplings. Constraints from the branching ratio of $B_s\toμ^+μ^-$ can be naturally incorporated with the scheme. For a reasonable set of the parameter ranges it is found that the new physics is less than $\sim 5~{\rm TeV}$. Some new physics models including the leptoquark, $Z'$, etc. can be embraced within our framework. We give comments on new LHCb data which are close to the standard model predictions.
