Thermal Dark Photon Dark Matter, Coscattering, and Long-lived ALPs
High Energy Physics - Phenomenology
2025-02-18 v2
Abstract
We study the thermal freeze-out of a dark photon dark matter in the so-called dark-axion portal - a triple coupling among a dark photon, an axion-like particle and the SM or boson. We analyze in detail the thermal production regimes: coscattering (aka conversion driven freeze-out), mediator freeze-out, and coannihilations. We found viable DM scenarios fulfilling the correct relic abundance in the three regimes. Apart of analyzing the parameter space for dark state masses between the GeV-TeV scale, we explore the prospects of having the axion-like field as a long-lived particle, possibly to be observed at the LHC and future detectors.
Cite
@article{arxiv.2405.06113,
title = {Thermal Dark Photon Dark Matter, Coscattering, and Long-lived ALPs},
author = {Bastián Díaz Sáez},
journal= {arXiv preprint arXiv:2405.06113},
year = {2025}
}