Gauged Peccei-Quinn Symmetry - A Case of Simultaneous Breaking of SUSY and PQ Symmetry

TL;DR

This paper explores a model where gauged PQ symmetry and supersymmetry are simultaneously broken at high energy scales, proposing a mechanism that suppresses quantum gravity effects and predicts testable particles at the TeV scale.

Contribution

It introduces a novel model combining gauged PQ symmetry with SUSY breaking, providing a concrete example with testable predictions for collider experiments.

Findings

Gauged PQ symmetry suppresses quantum gravity breaking effects.

A specific model with $SU(2)$ and $SU(N)$ dynamics achieves simultaneous SUSY and PQ breaking.

Predicts new vector-like particles in the TeV range testable at the LHC.

Abstract

Recently, a simple prescription to embed the global Peccei-Quinn (PQ) symmetry into a gauged $U(1)$ symmetry has been proposed. There, explicit breaking of the global PQ symmetry expected in quantum gravity are highly suppressed due to the gauged PQ symmetry. In this paper, we apply the gauged PQ mechanism to models where the global PQ symmetry and supersymmetry (SUSY) are simultaneously broken at around $\mathcal{O}(10^{11-12})$\,GeV. Such scenario is motivated by an intriguing coincidence between the supersymmetry breaking scale which explains the observed Higgs boson mass by the gravity mediated sfermion masses, and the PQ breaking scale which evades all the astrophysical and the cosmological constraints. As a concrete example, we construct a model which consists of a simultaneous supersymmetry/PQ symmetry breaking sector based on $SU(2)$ dynamics and an additional PQ symmetry breaking sector based on $SU(N)$ dynamics. We also show that new vector-like particles are predicted in the TeV range in the minimum model, which can be tested by the LHC experiments.