Arefeh Alizadeh

Department of Physics, Sharif University of Technology

Dark Matter Phenomenology: Production Mechanisms and Freeze-In via Inverse Semi-Annihilation

 

 Abstract: Dark matter is a key part of modern cosmology and particle physics. Studying its evolution and properties helps us understand the universe’s large-scale structure, galaxy dynamics, and the fundamental particles that may exist beyond the Standard Model.

In this presentation, I will give an overview of the evidence supporting the existence of dark matter and the possible candidates proposed to explain these observations. Production mechanisms, including misalignment, thermal freeze-out, and freeze-in, will be discussed. I will then focus on the freeze-in mechanism, a well-motivated scenario for non-thermal dark matter production. As discussed in arXiv:2104.05684, through inverse semi-annihilation processes, the freeze-in mechanism can explain the current abundance of dark matter. The semi-production approach allows for larger coupling values compared to the usual freeze-in scenario by considering a small initial abundance of dark matter.

یکشنبه 9 دی 1403، ساعت 17:00

Sunday 29 December 2024 – 17:00 Tehran Time

Hybrid Seminar

دانشکده فیزیک – طبقه اول – کلاس فیزیک 3 Physics Department – first floor – Room Physics 3  / 

https://vc.sharif.edu/ch/cosmology

گزینه ورود به صورت مهمان – Enter as a Guest