Nov 9 – 10, 2020
Europe/Zurich timezone

Freeze-in Dark Matter in U(1) extended Standard Model and Lifetime Frontier Experiments

Nov 9, 2020, 8:25 PM


Nobuchika Okada (University of Alabama)


In the context of a well-motivated gauged U(1) extension of the Standard Model, we introduce a non-thermal dark matter whose interaction is too weak to allow it to be in thermal equilibrium with the Standard Model particles, and its relic density is determined by the freeze-in mechanism through a light mediator that is the extra U(1) gauge boson. We discuss a complementarity between the cosmological constraint on this dark matter physics and the planned/proposed Lifetime Frontier experiments to search for a long-lived particle.

Primary authors

Nobuchika Okada (University of Alabama) Qaisar Shafi (university of delaware) Dr Satomi Okada (University of Alabama) Rabindra Mohapatra (University of Maryland, College Park)

Presentation materials