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Seminar
FIELD Phys:Particle Physics
DATE November 16 (Tue), 2021
TIME 10:00-12:00
PLACE Online
SPEAKER A. Buen-Abad, Manuel
HOST Kang, Dong Woo
INSTITUTE Maryland U.
TITLE Cosmological Constraints on Dark Matter Interactions with Ordinary Matter
ABSTRACT 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. In this talk we will explore these interactions using a diverse suite of data: cosmic microwave background anisotropies, baryon acoustic oscillations, the Lyman-α forest, and the abundance of Milky-Way subhalos. We will 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.
https://indico.kias.re.kr/event/69/

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