Speaker
Prof.
Howard Baer Baer
(University of Oklahoma)
Description
Supersymmetric models of particle physics with neutralino dark matter
tend to predict too much dark matter (the case of binos) or too little dark matter (case of winos
or higgsinos). If instead we solve the strong CP problem via PQ symmetry breaking, we
expect dark mater to be composed of an axion/axino mixture. If the PQ breaking scale is high, then
the re-heat temperature can be driven high enough to allow for leptogenesis, while solving the gravitino problem.
The model works best if there is a large component of axion DM. In this case, we expect no direct/indirect
WIMP signals, but possibly an axion signal, and quite different signatures for SUSY at LHC from
conventional scenarios with neutralino DM.
Primary author
Prof.
Howard Baer Baer
(University of Oklahoma)
