Splitting Mass Spectra and Muon g-2 in Higgs-Anomaly Mediation

TL;DR

This paper introduces a Higgs-anomaly mediation scenario where only Higgs multiplets directly couple to SUSY breaking, resulting in a distinctive mass spectrum that explains the muon g-2 anomaly and aligns with the observed Higgs mass.

Contribution

It proposes a novel SUSY breaking scenario with Higgs-specific couplings, producing a split mass spectrum that addresses multiple phenomenological issues.

Findings

Third generation sfermions are around 10 TeV, first and second are 0.1-1 TeV.

Muon g-2 anomaly is explained within this framework.

Third generation Yukawa unification is possible in some regions.

Abstract

We propose a scenario where only the Higgs multiplets have direct couplings to a supersymmetry (SUSY) breaking sector. The standard model matter multiplets as well as the gauge multiples are sequestered from the SUSY breaking sector; therefore, their masses arise via anomaly mediation at the high energy scale with a gravitino mass of $\sim$100 TeV. Due to renormalization group running effects from the Higgs soft masses, the masses of the third generation sfermions become O(10) TeV at the low energy scale, while the first and second generation sfermion masses are O(0.1-1) TeV, avoiding the tachyonic slepton problem and flavor changing neutral current problem. With the splitting mass spectrum, the muon g-2 anomaly is explained consistently with the observed Higgs boson mass of 125 GeV. Moreover, the third generation Yukawa couplings are expected to be unified in some regions.