2022/10/21 by Becirevic, Damir, Jaffredo, Florentin
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)
paper · doi:10.48550/arxiv.2210.12071
Motivated by the first observation of Λb→Λc~τν 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→ cτν anomalies. Furthermore, we show that the measurement of RΛc=B(Λb→Λcτν)/B(Λb→Λcμν) does not change the current global picture arising from RD\rm and RD^*\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.