Cosmological Constraints on Dark Matter Interactions with Ordinary Matter. (arXiv:2107.12377v1 [astro-ph.CO])

Cosmological Constraints on Dark Matter Interactions with Ordinary Matter. (arXiv:2107.12377v1 [astro-ph.CO])
<a href="http://arxiv.org/find/astro-ph/1/au:+Buen_Abad_M/0/1/0/all/0/1">Manuel A. Buen-Abad</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Essig_R/0/1/0/all/0/1">Rouven Essig</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+McKeen_D/0/1/0/all/0/1">David McKeen</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Zhong_Y/0/1/0/all/0/1">Yi-Ming Zhong</a>

Dark matter interactions with electrons or protons during the early Universe
leave imprints on the cosmic microwave background and the matter power
spectrum, and can be probed through cosmological and astrophysical
observations. We explore these interactions using a diverse suite of data:
cosmic microwave background anisotropies, baryon acoustic oscillations, the
Lyman-$alpha$ forest, and the abundance of Milky-Way subhalos. We derive
constraints using model-independent parameterizations of the dark
matter–electron and dark matter–proton interaction cross sections and map
these constraints onto concrete dark matter models. Our constraints are
complementary to other probes of dark matter interactions with ordinary matter,
such as direct detection, big bang nucleosynthesis, various astrophysical
systems, and accelerator-based experiments.

Dark matter interactions with electrons or protons during the early Universe
leave imprints on the cosmic microwave background and the matter power
spectrum, and can be probed through cosmological and astrophysical
observations. We explore these interactions using a diverse suite of data:
cosmic microwave background anisotropies, baryon acoustic oscillations, the
Lyman-$alpha$ forest, and the abundance of Milky-Way subhalos. We derive
constraints using model-independent parameterizations of the dark
matter–electron and dark matter–proton interaction cross sections and map
these constraints onto concrete dark matter models. Our constraints are
complementary to other probes of dark matter interactions with ordinary matter,
such as direct detection, big bang nucleosynthesis, various astrophysical
systems, and accelerator-based experiments.

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