Speaker
Helena Kolešová
(University of Stavanger)
Description
Taking axion inflation as an example, we consider a scenario where the inflaton is coupled solely to a pure SU(3) Yang-Mills sector. In the low-energy phase of this sector, glueball states are formed. If non-renormalizable operators are considered, these glueballs may become unstable and reheat the standard model fields. Yet, for a certain parameter range, C-parity can protect part of the glueball species from decay and the C-odd glueballs can provide a viable dark matter candidate. We study the constraints related to dark matter stability and minimal reheating temperature of the standard model and conclude that this scenario is very predictive.
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Primary authors
Helena Kolešová
(University of Stavanger)
Simona Procacci
(University of Geneva (CH))
Dr
Simone Biondini
(University of Basel)
