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HET Brown Bag Seminar | Cosmological Signatures of Sub-MeV Dark Matter Freeze-In

Katelin Schultz (Berkeley)
Wednesday, September 19, 2018
12:00-1:00 PM
3481 Randall Laboratory Map
Dark matter could be a thermal relic of freeze-in, where the dark matter is produced by extremely feeble interactions with Standard Model particles dominantly at low temperatures. The simplest sub-MeV dark matter models with freeze-in include models with a kinetically-mixed dark photon mediator, or equivalently models where dark matter is millicharged under the Standard Model U(1). In this talk I will discuss how such models can impact and be constrained by cosmological observables, including the CMB, the Lyman-alpha forest, and the EDGES observation of the cosmological 21 cm global signal.
Building: Randall Laboratory
Event Type: Workshop / Seminar
Tags: Free, Graduate Students, Physics, Science, Talk
Source: Happening @ Michigan from HET Brown Bag Series, Department of Physics