Testable radiative neutrino mass model without additional symmetries and explanation for the b→sℓ+ℓ− anomaly

Abstract

We propose a one-loop radiative Majorana-type neutrino-mass matrix without any kind of additional symmetries by introducing two leptoquark-like bosons only. In this scenario, we show that the anomaly appearing in the process $b\ensuremath{\rightarrow}s\ensuremath{\ell}\overline{\ensuremath{\ell}}$ can be explained without any conflicts against various constraints such as lepton-flavor violations, flavor-changing neutral currents, oblique parameters $\mathrm{\ensuremath{\Delta}}S$, $\mathrm{\ensuremath{\Delta}}T$, and the Drell-Yan process. We make the predictions for the flavor-violating lepton-pair production ($e\ensuremath{\mu}$, $e\ensuremath{\tau}$, and $\ensuremath{\mu}\ensuremath{\tau}$) at the LHC, as well as the cross sections for pair production of these leptoquark-like bosons.