Muon $(g-2)$ in the B-LSSM

TL;DR

This paper calculates the muon anomalous magnetic dipole moment at two-loop level within the B-L supersymmetric model, showing it can resolve the discrepancy between experimental results and the Standard Model prediction.

Contribution

It provides a detailed two-loop calculation of muon g-2 in the B-LSSM and demonstrates its potential to explain the experimental deviation.

Findings

B-LSSM can reconcile muon g-2 discrepancy

Two-loop corrections are significant in the model

Model satisfies multiple experimental constraints

Abstract

The difference between the updated experimental result on the muon anomalous magnetic dipole moment and the corresponding theoretical prediction of the standard model on that is about $4.2$ standard deviations. In this work, we calculate the muon anomalous MDM at the two-loop level in the supersymmetric $B-L$ extension of the standard model. Considering the experimental constraints on the lightest Higgs boson mass, Higgs boson decay modes $h\rightarrow \gamma\gamma,\;WW,\;ZZ,\; b\bar b,\;\tau\bar\tau$, B rare decay $\bar B\rightarrow X_s\gamma$, and the transition magnetic moments of Majorana neutrinos, we analyze the theoretical predictions of the muon anomalous magnetic dipole moment in the $B-L$ supersymmetric model. The numerical analyses indicate that the tension between the experimental measurement and the standard model prediction is remedied in the $B-L$ supersymmetric model.