Heavy Bino and Slepton for Muon g-2 Anomaly

TL;DR

This paper explores how heavy bino and smuon particles in an effective SUSY model can explain the muon g-2 anomaly, consistent with recent experimental results and collider constraints.

Contribution

It demonstrates that TeV-scale bino and smuon can account for the muon g-2 anomaly through enhanced left-right smuon mixing in an effective SUSY framework.

Findings

TeV-scale bino and smuon can explain muon g-2 within collider constraints.

Enhanced left-right smuon mixing increases g-2 contribution.

Implications for LHC phenomenology are discussed.

Abstract

In light of very recent E989 experimental result, we investigate the possibility that heavy sparticles explain the muon g-2 anomaly. We focus on the bino-smuon loop in an effective SUSY scenario, where a light gravitino plays the role of dark matter and other sparticles are heavy. Due to the enhancement of left-right mixing of smuons by heavy higgsinos, the contribution of bino-smuon loop can sizably increase the prediction of muon g-2 to the experimental value. Under collider and vacuum stability constraints, we find that TeV scale bino and smuon can still account for the new muon g-2 anomaly. The implications for LHC phenomenology are also discussed.