Right-handed interactions in puzzling B-decays

Abstract

We explain the difference between the measured decay widths of b → c τ ν processes and of B → K ν ν ¯ and their values predicted in the Standard Model by introducing the right-handed interactions both to quarks and to leptons . At low energy scales, in addition to the Standard Model particles, we assume the presence of an additional neutral lepton (right-handed neutrino). We then show a specific realization of such a scenario in a model with a single scalar leptoquark ( S 1 ), and discuss the corresponding phenomenology.

Topics & Concepts