论文标题
B介子衰减中的异常：一种现象学方法
Anomalies in B mesons decays: A phenomenological approach
论文作者
论文摘要
关于风味物理学的实验测量以及标准模型预测的张力，表现出大量的Lepton风味普遍性的来源。我们通过包括一组不同的场景，对全球拟合对Wilson系数的影响进行分析，其中包括一组不同的情况，其中新物理学对Wilson系数的贡献一次以一个，两个或三个Wilson系数存在。我们将全球拟合的结果相对于两种情况进行了比较：标准模型和更普遍的情况，其中新物理学修改了三个独立的威尔逊系数。最后提到的方案是解释标准模型预测和B形物理异常之间的张力的最爱，但是特定的限制性方案可以使用较小的自由参数集提供相似的好处。包括对我们在Leptoquark模型中分析的含义的讨论。
The experimental measurements on flavour physics, in tension with Standard Model predictions, exhibit large sources of Lepton Flavour Universality violation. We perform an analysis of the effects of the global fits on the Wilson coefficients assuming a model independent effective Hamiltonian approach, by including a set of different scenarios in which the New Physics contributions to the Wilson coefficients are present in one, two or three of the Wilson coefficients at a time. We compare the results of the global fit with respect to two cases: the Standard Model and the more general case in which New Physics modifies three independent Wilson coefficients. The last mentioned scenario is the favoured one for explaining the tension between Standard Model predictions and B-physics anomalies, but a specific more restricted scenario can provide similar goodness with a smaller set of free parameters. A discussion of the implications of our analysis in leptoquark models is included.
