Combined explanations of B-physics anomalies, $$(g-2)_{e, \mu }$$ and neutrino masses by scalar leptoquarks

Abstract

AbstractWe extend the contents of the standard model (SM) by introducing TeV-scale scalar leptoquarks to generate neutrino masses and explain some current observed deviations from the SM predictions, including the anomalous magnetic moments of charged leptons (electron and muon) and B-physics anomalies ($$R_{K^{(*)}}$$ R K ( ∗ ) and $$R_{D^{(*)}}$$ R D ( ∗ ) ). The model consists of $$\text {SU}(2)_L$$ SU ( 2 ) L singlet leptoquark $$S_1\sim ({\bar{3}}, 1, 1/3)$$ S 1 ∼ ( 3 ¯ , 1 , 1 / 3 ) , doublet leptoquark $${\tilde{R}}_2\sim (3, 2, 1/6)$$ R ~ 2 ∼ ( 3 , 2 , 1 / 6 ) and triplet leptoquark $$S_3\sim ({\bar{3}}, 3, 1/3)$$ S 3 ∼ ( 3 ¯ , 3 , 1 / 3 ) . We combine the constraints arising from the low-energy lepton flavor violation, meson decay and mixing observables. We perform a detailed phenomenological analysis and identify the minimized texture of leptoquark Yukawa matrices to accommodate a unified explanation of the anomalies and neutrino oscillation data.