论文标题
鳞片和半衰减衰减中的新物理效果
New Physics effects in leptonic and semileptonic decays
论文作者
论文摘要
我们通过使用有关伪内膜中的松弛和半衰减衰减的当前数据来讨论提取新物理学的约束的可能性。在此过程中，我们使用了一般的低能拉格朗日语，除了向量和轴向操作员外，还包括（伪）标量和张量。在获得对新物理耦合的限制时，我们将有关多种衰减模式的实验信息与HADRONIC矩阵元素的准确晶格QCD结果相结合。我们建议研究可以从半衰减衰减的角度分析中提取的新可观察物，并在标准模型和标准模型以外的物理学的某些特定情况下讨论它们的值。
We discuss the possibilities of extracting the constraints on New Physics by using the current data on the leptonic and semileptonic decays of pseudoscalar mesons. In doing so we use a general low energy Lagrangian that besides the vector and axial operators also includes the (pseudo-)scalar and tensor ones. In obtaining constraints on New Physics couplings we combine the experimental information concerning several decay modes with the accurate lattice QCD results for the hadronic matrix elements. We propose to study new observables that can be extracted from the angular analysis of the semileptonic decays and discuss their values both in the Standard Model and in some specific scenarios of physics beyond the Standard Model.
