Muon Anomalous Magnetic Moment in SUSY B-L Model with Inverse Seesaw

TL;DR

This paper investigates the muon g-2 anomaly within a supersymmetric B-L model with inverse seesaw, showing that light neutralinos can account for the observed discrepancy while maintaining a 125 GeV Higgs mass.

Contribution

It introduces the analysis of muon g-2 in the SUSY B-L model with inverse seesaw, highlighting the role of light neutralinos and additional radiative corrections in explaining experimental results.

Findings

Muon g-2 can be explained within 2 sigma of experimental value.

Light neutralinos, including Bino-like and B'-ino, significantly contribute to muon g-2.

Higgs mass of 125 GeV is compatible with the model parameters.

Abstract

Motivated by the tension between the Higgs mass and muon g-2 in minimal supersymmetric standard model (MSSM), we analyze the muon g-2 in supersymmertic B-L extension of the standard model (BLSSM) with inverse seesaw mechanism. In this model, the Higgs mass receives extra important radiative corrections proportional to large neutrino Yukawa coupling. We point out that muon g-2 also gets significant contribution, due to the constructive interferences of light neutralino effects. The light neutralinos are typically the MSSM Bino like and the supersymmetric partner of U(1)_B-L gauge boson (B'-ino). We show that with universal soft supersymmetry breaking terms, the muon g-2 resides within 2 sigma of the measured value, namely ~17 x 10^-10, with Higgs mass equal to 125 GeV .