@Article{Capozzi_etal2023,
author="Capozzi, F.
and Ferreira, R. Z.
and Lopez-Honorez, L.
and Mena, O.",
title="CMB and Lyman-alpha constraints on dark matter decays to photons",
journal="Journal of Cosmology and Astroparticle Physics",
year="2023",
publisher="IOP Publishing Ltd",
volume="06",
number="6",
pages="060--23pp",
optkeywords="reionization; axions; cosmological parameters from CMBR; dark matter theory",
abstract="Dark matter energy injection in the early universe modifies both the ionization history and the temperature of the intergalactic medium. In this work, we improve the CMB bounds on sub-keV dark matter and extend previous bounds from Lyman-{\&} alpha; observations to the same mass range, resulting in new and competitive constraints on axion-like particles (ALPs) decaying into two photons. The limits depend on the underlying reionization history, here accounted self-consistently by our modified version of the publicly available DarkHistory and CLASS codes. Future measurements such as the ones from the CMB-S4 experiment may play a crucial, leading role in the search for this type of light dark matter candidates.",
optnote="WOS:001025410500001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5584), last updated on Wed, 02 Aug 2023 07:14:47 +0000",
issn="1475-7516",
doi="10.1088/1475-7516/2023/06/060",
opturl="https://arxiv.org/abs/2303.07426",
opturl="https://doi.org/10.1088/1475-7516/2023/06/060",
language="English"
}