Explaining the and anomalies with right-handed sneutrinos

Abstract

The recent intriguing measurements of RK and are important hints of new physics that violates lepton universality. We analyze the semileptonic decays in the framework of the B − L extension of the Minimal Supersymmetric Standard Model (MSSM) with Inverse Seesaw (BLSSMIS). A salient feature of this model is that one of the right-handed sneutrinos can be light and the neutrino Yukawa couplings are of order one. We show that the box diagram mediated by the right-handed sneutrino, higgsino-like chargino, and light stop can account simultaneously for both RK and . Therefore, while the MSSM cannot explain the RK and anomalies, the BLSSMIS can account for them, where a significant lepton flavor non-universality might stem from large neutrino Yukawa couplings.