Higgs Mass and Muon $g-2$ Anomaly in MSSM with Gauge-Gravity hybrid Mediation

TL;DR

This paper proposes a hybrid supersymmetry breaking model combining gravity and gauge mediation to naturally explain the Higgs mass, muon g-2 anomaly, and current collider bounds within the MSSM framework.

Contribution

It introduces a novel anomaly-gravity mediation approach that achieves a realistic superpartner spectrum compatible with experimental constraints.

Findings

Achieves a 125 GeV Higgs mass consistent with LHC data.

Explains the muon g-2 anomaly within the MSSM.

Predicts heavy gluinos and squarks beyond current LHC reach.

Abstract

In general, we can propose the hybrid supersymmetry breakings and hybrid mediations in the Supersymmetric Standard Models (SSMs). In this paper, we study the hybrid mediation for supersymmetry (SUSY) breaking. In particular, we study how to keep the good properties of gravity mediation, gauge mediation, and anomaly mediation, while solve their problems simultaneously. As an example, we consider the anomaly-gravity mediation, where all the supersymmetric particles (sparticles) obtain the SUSY breaking soft terms from the traditional gravity mediation while gauge mediation gives dominant contributions to the soft terms in the colored sector due to the splitted messengers. Thus, we can realize the electroweak supersymmetry naturally where the sleptons, sneutrinos, and electroweakinos are light within one TeV while the squarks and gluino are heavy around a few TeVs. And then we can explain 125 GeV Higgs mass, satisfy the LHC SUSY search bounds, and explain the anomalous magnetic momement of muon, etc. Moreover, the gluino and squarks are well beyond the current LHC Run II searches.