Thursday, March 6, 2014 - 13:00
Warm Dark Matter in B-L Inverse Seesaw
We show that a standard model gauge singlet fermion field, with mass of order keV or larger, and involved in the inverse seesaw mechanism of light neutrino mass generation, can be a good warm dark matter candidate. Our warm dark matter candidate can also be produced non-thermally, directly from the decay of the moduli field during reheating. In this case, the right amount of relic abundance of our dark matter candidate is obtained, while the reheating temperature is high enough as to be consistent with Big Bang nuceosynthesis.