论文标题
在有效田间理论中限制标量leptoquarks的风味
Constraining flavour patterns of scalar leptoquarks in the effective field theory
论文作者
论文摘要
我们研究了以$ s_1 $和$ s_3 $ scalar leptoquarks扩展标准模型的可行性，当时风味结构以Froggatt-Nielsen的费用进行了参数。与矢量leptoquark的类似分析相反，我们发现了适合实验约束的指控的两种解决方案，这些解决方案由$ b $衰减的当前紧张局势主导。这两种情况在对哑光异常磁矩的估计中有所不同，$（g-2）$，但它们都预测了对$τ\toμγ$，$ \ bar b_s \toτ^\pmμ^\ mp $和$ b^+\ to k^+τ+τ^+μ^ - $ distor的lim batioies的相当大的贡献。
We investigate the viability of extending the Standard Model with $S_1$ and $S_3$ scalar leptoquarks when the flavour structure is parametrized in terms of Froggatt-Nielsen charges. In contrast to a similar analysis with a vector leptoquark, we find essentially two solutions for the charges that fit the experimental constraints, which are dominated by the current tensions in $B$ decays. These two scenarios differ in their estimate of the anomalous magnetic moment of the muon, $(g-2)$, but they both predict sizeable contributions to $τ\toμγ$, $\bar B_s\toτ^\pmμ^\mp$ and $B^+\to K^+τ^+μ^-$ decays, whose branching ratios are close to the current experimental limits.
