Speaker
Rusa Mandal
(Siegen University)
Description
Semileptonic flavor changing neutral current transitions with a pair of neutrinos in the final state are very accurately determined in the standard model. The most recent Belle II result on $B\to K \nu \bar{\nu}$ uses an innovative inclusive tagging technique; this together with previous BaBar and Belle results indicates a possible enhancement in the branching fraction of $B^+\to K^+ \nu \bar{\nu}$. We have explored the possibilities of such an enhancement as a signal of new physics within several scenarios such as leptoquark and generic $Z^\prime$ models, which can also explain some of the other tensions observed in neutral as well as charged current $B$-decays.
Primary author
Rusa Mandal
(Siegen University)
Co-authors
Nilendra Deshpande
(University of Oregon)
Rahul Sinha
(The Institute of Mathematical Sciences)
Thomas Browder
(University of Hawaii)
