Gravitino Freeze-In

Details Gravitino Freeze-In Gravitino Freeze-In

2011-03-22

arxiv.org/abs/1103.4394v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 3 figures

Scientific paper

We explore an alternative mechanism for the production of gravitino dark matter whereby relic gravitinos originate from the decays of superpartners which are still in thermal equilibrium, i.e. via freeze-in. Contributions to the gravitino abundance from freeze-in can easily dominate over those from thermal scattering over a broad range of parameter space, e.g. when the scalar superpartners are heavy. Because the relic abundance from freeze-in is independent of the reheating temperature after inflation, collider measurements may be used to unambiguously reconstruct the freeze-in origin of gravitinos. In particular, if gravitino freeze-in indeed accounts for the present day dark matter abundance, then the lifetime of the next-to-lightest superpartner is uniquely fixed by the superpartner spectrum.

Affiliated with

Also associated with

No associations

Rating

Gravitino Freeze-In does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Gravitino Freeze-In, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravitino Freeze-In will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-440399