Thursday, October 19, 2017, 16:00
WHGA Auditorium
Mikko Laine, Bern University
Abstract:
Astronomical observations demand the existence of dark matter, however
no suitable candidates have been observed at the Large Hadron Collider
or elsewhere so far. This poses a challenge both for model building and
for the theoretical tools with which a given model is addressed. After a
gentle introduction, issues related to the latter challenge are
reviewed. Finally, as a concrete example, we illustrate the recently
fashionable idea that bound states could appear in the dark sector and
significantly affect the freeze-out dynamics. As it happens, this
physics may have interesting analogues with the much-studied fate of
quarkonia states in Heavy Ion Collision experiments.