Dark mesons as self-interacting dark matter

TL;DR

This paper reviews models of light dark matter composed of dark mesons within QCD-like hidden sectors, discussing their production, equilibrium, and theoretical unitarization methods.

Contribution

It introduces a comprehensive review of dark meson models, including production mechanisms and a novel approach to unitarization with vector mesons in hidden gauge symmetry.

Findings

Dark mesons can serve as self-interacting dark matter candidates.

The paper discusses the conditions for kinetic equilibrium of dark mesons.

A unitarization scheme for dark chiral perturbation theory with vector mesons is proposed.

Abstract

We review the current status of model building for light dark matter in theories of QCD-like gauge groups in the hidden sector. The focus is upon the dark mesons with the $SU(3)_V$ flavor symmetry in scenarios of Strongly Interacting Massive Particles. We show the production mechanism and the kinetic equilibrium condition for dark mesons and discuss a unitarization of dark chiral perturbation theory with vector mesons in the scheme of hidden gauge symmetry.