Speaker
RIA SAIN
(Central china normal University)
Description
The Belle-II experiment has recently reported the first measurement of $B^+ \to K ^+\nu \nu$ decay which
exceeds the Standard Model prediction by approximately 2.7$\sigma$. The deviation may indicate the
presence of new physics beyond the Standard Model in the $b \to s \nu \nu$sector. Under this assumption,
we study the hadronic $\Lambda_b \to \Lambda \nu \nu$ and $\Lambda_b \to \Lambda^*(\to NK) \nu \nu$ within both the Standard Model
and beyond. We work in a low energy effective field theory framework with additional light right-
handed neutrinos. We calculate the differential branching ratios of these decay modes and explore
the implications of the Belle-II results through various observables.
Primary author
RIA SAIN
(Central china normal University)
