Sara Khatibi

Department of Physics, University of Tehran

Feebly interacting light dark matter

Abstract: A wide range of astrophysical and cosmological observations, from galactic rotation curves to cosmic microwave background measurements, strongly support the existence of dark matter (DM), which constitutes approximately 25% of the Universe’s total energy density. Despite this compelling evidence, the fundamental nature and origin of DM remain elusive. Traditional candidates, such as weakly interacting massive particles (WIMPs) with masses at the GeV scale, have been the focus of intense experimental investigation for decades, yet no definitive signals have been observed. This has led to growing interest in alternative DM scenarios, particularly those involving sub-GeV particles with extremely feeble interactions. The production of such dark matter in the early universe poses significant challenges, as the small couplings typically prevent the associated dark sector particles from achieving thermal equilibrium. In this talk, I will begin with a brief overview of dark matter physics, followed by a discussion of various production mechanisms for feebly interacting dark matter in the early universe.

سه شنبه 6 خرداد 1404، ساعت 17:00

Tuesday 27 May 2025 – 17:00 Tehran Time

Hybrid Seminar

اتاق سمینار مرکز پژوهشی فیزیک انرژی بالا /Center of High Energy Physics– Seminar Room   

https://vc.sharif.edu/ch/physics-high-energy

گزینه ورود به صورت مهمان – Enter as a Guest