论文标题
在$λ_b\longrightarrowλ_c（\toλπ）中寻找新物理学的效果
Looking for the effects of New Physics in the $Λ_b \longrightarrow Λ_c(\to Λπ) \ell ν$ decay mode
论文作者
论文摘要
在低能尺度上寻找新物理学的影响的最务实的方法之一是研究各种衰变模式的详细角度分布，尤其是基于$ b \ to c \ ell \ ell \ bar ben v n n $的详细分布。在本文中，我们将重点放在$λ_B\longrightArrowλ_c（\toλπ）\ellν$中，在通用有效理论设置中，除了标准模型外，我们还允许所有可能的协同尺寸尺寸尺寸有效运算符，这些尺寸有效的操作员捕获了在高能量尺度上产生的贡献，超出了标准模型。我们列出了许多可观察到的物品，这些可被用作诊断工具，以检查是否存在新物理学并区分其各种情况。我们还简要评论$λ_c\toλlν$。
One of the most pragmatic ways to look for the effects of New Physics at low energy scales is to study a detailed angular distribution of various decay modes, and in particular those based on $b\to c\ell\bar ν_\ell$. In this paper we focus onto $Λ_b \longrightarrow Λ_c(\to Λπ) \ell ν$ in a generic effective theory setup in which, besides the Standard Model, we allow for all the possible covariant dimension-six effective operators capturing the contributions arising at high energy scales, beyond the Standard Model. We list a number of observables that could be used as a diagnostic tool to check for the presence of New Physics and to discriminate among its various scenarios. We also briefly comment on $Λ_c \to Λlν$.
