Right-handed interactions in puzzling B-decaysBečirević, Damir (Avtor) Fajfer, Svjetlana (Avtor) Košnik, Nejc (Avtor) Pavičić, Lovre (Avtor) physics of elementary particlesparticle decaysWe 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.20252025-01-29 13:32:23Članek v reviji166883UDK: 539.1ISSN pri članku: 1873-2445DOI: 10.1016/j.physletb.2025.139285COBISS_ID: 224410883sl