A Simple and Realistic Model of Supersymmetry Breaking

TL;DR

This paper introduces a straightforward, realistic supersymmetry breaking model involving a hidden SU(5) gauge sector, which naturally generates comparable supersymmetry breaking and mu parameters without flavor or CP violations.

Contribution

It presents a minimal supersymmetry breaking model with a hidden SU(5) sector, controlled local operators, and a spectrum similar to gauge mediation, while allowing deviations for third-generation particles.

Findings

Supersymmetry breaking occurs at a local minimum of the potential.

The model predicts a gravitino LSP with mass 1-10 GeV.

The superparticle spectrum aligns with minimal gauge mediation for the first two generations.

Abstract

We present a simple and realistic model of supersymmetry breaking. In addition to the minimal supersymmetric standard model, we only introduce a hidden sector gauge group SU(5) and three fields X, F and \bar{F}. Supersymmetry is broken at a local minimum of the potential, and its effects are transmitted to the supersymmetric standard model sector through both standard model gauge loops and local operators suppressed by the cutoff scale, which is taken to be the unification scale. The form of the local operators is controlled by a U(1) symmetry. The generated supersymmetry breaking and mu parameters are comparable in size, and no flavor or CP violating terms arise. The spectrum of the first two generation superparticles is that of minimal gauge mediation with the number of messengers N_mess = 5 and the messenger scale 10^11 GeV < M_mess < 10^13 GeV. The spectrum of the Higgs bosons and third generation superparticles, however, can deviate from it. The lightest supersymmetric particle is the gravitino with a mass of order (1-10) GeV.