A common origin of muon g-2 anomaly, Galaxy Center GeV excess and AMS-02 anti-proton excess in the NMSSM

TL;DR

This paper proposes that a 60 GeV bino-like neutralino within the NMSSM can simultaneously explain the muon g-2 anomaly, Galactic center gamma-ray excess, and AMS-02 antiproton excess, consistent with multiple experimental constraints.

Contribution

It introduces a unified NMSSM-based explanation for multiple astrophysical and particle physics anomalies using a specific neutralino candidate.

Findings

A 60 GeV bino-like neutralino can account for all three anomalies.

The scenario is compatible with current experimental constraints.

Future direct detection experiments can test this model.

Abstract

The supersymmetric model is one of the most attractive extensions of the Standard Model of particle physics. In light of the most recently reported anomaly of the muon g-2 measurement by the FermiLab E989 experiment, and the excesses of gamma rays at the Galactic center observed by Fermi-LAT space telescope, as well as the antiproton excess observed by the Alpha Magnetic Spectrometer, we propose to account for all these anomalies or excesses in the Next-to-Minimal Supersymmetric Standard Model. Considering various experimental constraints including the Higgs mass, B-physics, collider data, dark matter relic density and direct detections, we find that a $\sim 60$ GeV bino-like neutralino is able to successfully explain all these observations. Our scenario can be sensitively probed by future direct detection experiments.