Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-06-14
Phys.Rev. D73 (2006) 043514
Physics
High Energy Physics
High Energy Physics - Phenomenology
21 pages, 5 figures ; matches published version
Scientific paper
10.1103/PhysRevD.73.043514
This paper investigates the parameter space of theories with gauge mediated supersymmetry breaking leading to gravitino (cold) dark matter with mass m_{3/2}= 1keV - 10MeV. We pay particular attention to the cosmological role of messenger fields. Cosmology requires that these messengers decay to the visible sector if the lightest messenger mass M_X > 30TeV. We then examine the various possible messenger number violating interactions allowed by the symmetries of the theory and by phenomenology. Late messenger decay generally results in entropy production hence in the dilution of pre-existing gravitinos. We find that in SU(5) grand unification only specific messenger-matter couplings allow to produce the required amount of gravitino dark matter particles. Gravitino dark matter with the correct abundance is however expected in larger gauge groups such as SO(10) for generic non-renormalizable messenger-matter interactions and for arbritrarily high post-inflationary reheating temperatures.
Jedamzik Karsten
Lemoine Martin
Moultaka Gilbert
No associations
LandOfFree
Gravitino dark matter in gauge mediated supersymmetry breaking 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 dark matter in gauge mediated supersymmetry breaking, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravitino dark matter in gauge mediated supersymmetry breaking will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-224947