Explaining $(g-2)_{\mu}$ with Multi-TeV Sleptons

TL;DR

This paper proposes a supersymmetric model extension that allows multi-TeV sleptons to significantly explain the muon g-2 anomaly, surpassing previous models in contribution magnitude.

Contribution

It introduces a novel supersymmetric framework with an extended electroweak sector enabling large muon couplings and explains the muon g-2 discrepancy with multi-TeV sleptons.

Findings

Multi-TeV sleptons can account for the muon g-2 anomaly.

The model accommodates Higgs bosons and Higgsinos with O(1) muon couplings.

Potential effects on tau flavor-changing decays are discussed.

Abstract

We present a supersymmetric extension of the Standard Model in which the new physics contributions to the anomalous magnetic moment of the muon can be more than an order of magnitude larger than in the minimal supersymmetric Standard Model. The extended electroweak symmetry breaking sector of the model can consistently accommodate Higgs bosons and Higgsinos with $O(1)$ couplings to muons. We find that sleptons with masses in the multi-TeV range can comfortably explain the recently confirmed discrepancy in the anomalous magnetic moment of the muon. We discuss additional phenomenological aspects of the model, including its effects on tau flavor changing decays.