Models for SIMP dark matter and dark photon

TL;DR

This paper reviews the SIMP dark matter paradigm, proposing a consistent dark QCD model with a $Z'$ portal that maintains equilibrium with the Standard Model and can be tested by future experiments.

Contribution

It introduces a novel dark QCD model for SIMP dark mesons with a $Z'$ portal compatible with stability and experimental constraints.

Findings

The $Z'$-portal interaction maintains kinetic equilibrium during freeze-out.

The model's parameter space can be explored by upcoming collider and detection experiments.

The framework is consistent with dark meson stability and cosmological constraints.

Abstract

We give a review on the SIMP paradigm and discuss a consistent model for SIMP dark mesons in the context of a dark QCD with flavor symmetry. The $Z'$-portal interaction is introduced being compatible with stable dark mesons and is responsible for making the SIMP dark mesons remain in kinetic equilibrium with the SM during the freeze-out process. The SIMP parameter space of the $Z'$ gauge boson can be probed by future collider and direct detection experiments.