Speaker
Maxim Laletin
(University of Warsaw)
Description
Axions can be produced via the interactions in the thermal plasma
of the early Universe and their contribution to dark radiation can
modify the cosmological observables and constrain the axion
couplings to SM particles. In my talk I am going to outline an
approach to calculate the axion cosmological abundance that goes
beyond the approximations widely used in the literature on the
topic and demonstrate how it affects the bounds on axion couplings
on the example of axion interactions with leptons.
Primary author
Maxim Laletin
(University of Warsaw)
Co-author
Prof.
Marcin Badziak
(University of Warsaw)
