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arXiv · 2410.23257

Right-handed interactions in puzzling $B$-decays

Damir Bečirević·Svjetlana Fajfer·Nejc Košnik·Lovre Pavičić
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Abstract

We explain the difference between the measured decay widths of $b \to c \tau \nu$ processes and of $B\to K\nu\bar{\nu}$ 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.

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Damir Bečirević, Svjetlana Fajfer, Nejc Košnik, Lovre Pavičić. 2024-10-30. Right-handed interactions in puzzling $B$-decays. https://doi.org/10.1016/j.physletb.2025.139285

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