Speaker
Eric Kuflik
Description
I will give the general properties of freezeout of a thermal relic.
This will be used to give an approximate perturbative unitarity bound
on the dark matter mass for an arbitrary thermal freezeout process. I
will show that within a standard cosmology it is possible to have
thermal dark matter freezeout via perturbative processes well above
the WIMP unitarity bound of 100 TeV. For dark matter above this mass,
there are nearly degenerate states with the dark matter and the dark
matter is generically metastable. I will give examples of freezeout of
a thermal relic that allow for dark matter masses up to the Planck
scale.