Dark mesons as self-interacting dark matter

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.

arXiv comment9 pages, no figures. Prepared for the European Physical Journal Special Topics, Review of Fundamental Composite Dynamics, v2: discussion expanded and typos corrected

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