论文标题
$ {\ bar b} \ to d^* \ ell^ - {\barν} _ \ ell $衰减：角分布和新物理
${\bar B} \to D^* \ell^- {\barν}_\ell$ Decays: Angular Distributions and New Physics
论文作者
论文摘要
目前，有几个可观察到$ b \ to c \ ell^ - {\barν} _ \ ell $衰减的可观察到的新物理（NP）提示。在本演讲中，我描述了$ {\ bar b} \ to d^*μ^ - {\barν}_μ$和$ {\ bar b} \ to d^*τ^ - （\至π^ - ν_-ν_-t_-b barv）{\barν} _ _ _ _τ$ disoditions np ponsoditions，我描述了可测量的角度分布。这些角度分布包含足够的信息来固定NP的Lorentz结构，这将有助于识别它。他们还具有揭示非湿度（非耦合）NP的存在的能力。
At the present time, there are hints of new physics (NP) in several observables involving $b \to c \ell^- {\barν}_\ell$ decays. In this talk, I describe measurable angular distributions for ${\bar B} \to D^* μ^- {\barν}_μ$ and ${\bar B} \to D^* τ^- (\to π^- ν_τ) {\barν}_τ$ decays, including the most general NP contributions. These angular distributions contain enough information to pin down the Lorentz structure of the NP, which will help to identify it. They also have the ability to reveal the presence of non-SMEFT (non-decoupling) NP.
