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High Energy Physics - Phenomenology

arXiv:hep-ph/0506129 (hep-ph)
[Submitted on 14 Jun 2005 (v1), last revised 9 May 2006 (this version, v2)]

Title:Gravitino dark matter in gauge mediated supersymmetry breaking

Authors:Karsten Jedamzik (LPTA), Martin Lemoine (IAP), Gilbert Moultaka (LPTA)
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Abstract: 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.
Comments: 21 pages, 5 figures ; matches published version
Subjects: High Energy Physics - Phenomenology (hep-ph); Astrophysics (astro-ph); High Energy Physics - Theory (hep-th)
Cite as: arXiv:hep-ph/0506129
  (or arXiv:hep-ph/0506129v2 for this version)
  https://doi.org/10.48550/arXiv.hep-ph/0506129
Journal reference: Phys.Rev. D73 (2006) 043514
Related DOI: https://doi.org/10.1103/PhysRevD.73.043514

Submission history

From: Martin Lemoine [view email]
[v1] Tue, 14 Jun 2005 07:42:46 UTC (99 KB)
[v2] Tue, 9 May 2006 14:44:55 UTC (100 KB)
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