论文标题
Baryons充电当前异常
Charged Current Anomalies with Baryons
论文作者
论文摘要
通过LHCB对$λ_b\ toλ_c〜τ \barν$的首次观察，我们讨论了可以从该衰减的角度分布中得出的各种可观察到的物品，如果测量的话，这对于解释$ b \ \ b \ barbarν$ anomalies可能是必不可少的。此外，我们表明$ r_ {λ_c} = \ Mathcal {b}（λ_b\toλ_cCτ\barν）/\ Mathcal {b}（λ_B\toλ_cμ\barν）$的测量$ r_ {d^*}^{\ rm} $比标准模型中的预测大。最后，我们展示了一些有或没有次要衰减的一些角度可观察物的例子，这些衰减可能具有强大的新物理学能力。
Motivated by the first observation of $Λ_b\toΛ_c~τ\barν$ by LHCb, we discuss various observables that can be derived from angular distribution of this decay which, if measured, could be essential for explanation of the $b\to cτ\barν$ anomalies. Furthermore, we show that the measurement of $R_{Λ_c}=\mathcal{B}(Λ_b\toΛ_cτ\barν)/\mathcal{B}(Λ_b\toΛ_cμ\barν)$ does not change the current global picture arising from $R_D^{\rm}$ and $R_{D^*}^{\rm}$ being larger than predicted in the Standard Model. Finally, we show the example of a few angular observables, with and without a secondary decay, that could have a strong discriminating power on New Physics.
