Explaining the ${\mathcal{R}}(D)$ and ${\mathcal{R}}(D^{\ast})$ Anomalies in the $B-L$ Supersymmetric Standard Model with Inverse Seesaw

TL;DR

This paper explores how a $B-L$ extended supersymmetric model with inverse seesaw can simultaneously explain the observed anomalies in the ratios ${ m R}(D)$ and ${ m R}(D^*)$, through lepton penguin processes involving superpartners.

Contribution

It introduces a novel supersymmetric framework that accounts for ${ m R}(D)$ and ${ m R}(D^*)$ anomalies via lepton penguin diagrams mediated by sneutrinos, charginos, and neutralinos.

Findings

Lepton penguin diagrams can explain the anomalies.

The model accommodates both ${ m R}(D)$ and ${ m R}(D^*)$ anomalies simultaneously.

Supersymmetric particles play a key role in the explanation.

Abstract

We investigate the ${\mathcal{R}}(D)$ and ${\mathcal{R}}(D^{\ast})$ anomalies in the context of the $B-L$ extension of the Minimal Supersymmetric Standard Model with Inverse Seesaw. We demonstrate that the lepton penguin $W^{\pm}l \bar\nu_l $ ($l=e,\mu,\tau$) mediated by CP-even/odd right-handed sneutrinos, charginos and neutralinos can account for these anomalies simultaneously.