Grand Unification, Dark Matter, Baryon Asymmetry, and the Small Scale Structure of the Universe

Details Grand Unification, Dark Matter, Baryon Asymmetry, and the Small Scale Structure of the Universe Grand Unification, Dark Matter, Baryon Asymmetry, and the Small Scale Structure of the Universe

2005-03-11

arxiv.org/abs/hep-ph/0503112v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

We consider a minimal grand unified model where the dark matter arises from non-thermal decays of a messenger particle in the TeV range. The messenger particle compensates for the baryon asymmetry in the standard model and gives similar number densities to both the baryon and the dark matter. The non-thermal dark matter, if massive in the GeV range, could have a free-streaming scale in the order of 0.1 Mpc and potentially resolve the discrepancies between observations and the LCDM model on the small scale structure of the Universe. Moreover, a GeV scale dark matter naturally leads to the observed puzzling proximity of baryonic and dark matter densities. Unification of gauge couplings is achieved by choosing a "Higgsino" messenger.

Affiliated with

Also associated with

No associations

Rating

Grand Unification, Dark Matter, Baryon Asymmetry, and the Small Scale Structure of the Universe 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 Grand Unification, Dark Matter, Baryon Asymmetry, and the Small Scale Structure of the Universe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Grand Unification, Dark Matter, Baryon Asymmetry, and the Small Scale Structure of the Universe will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-452692