Non-equilibrium statistical mechanics, Fermion dark matter and SN1987A cooling

Prof. Prasanta Kumar Das (host Dev), Birla Institute of Science and Technology, Goa
June 18, 2018 at 3:00 pm
241 Compton
Event Description 

Light dark matter(1 − 30 MeV) particles which can be pair produced in electron-positron annihilation e − e + → χ χ inside the supernova SN1987A core, take away the energy released in the supernova SN1987A explosion. Working within the framework of q-deformed scenario (non-equilibrium statistics) and using the Raffelt’s criteria on the energy loss rate and the optical depth criteria on the free streaming of the dark matter fermion, we find that the lower bound on the scale Λ of the dark matter effective theory to be Λ ∼1.0E+07 TeV for m χ =30 MeV.

Coffee: 2:45 pm, 241 Compton