Is gravitino still a warm dark matter candidate?

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dc.creatorGorbunov, D.
dc.creatorKhmelnitsky, A.
dc.creatorRubakov, V.
dc.date2008-05-19
dc.date2008-12-08
dc.date.accessioned2026-07-07T12:38:38Z
dc.date.available2026-07-07T12:38:38Z
dc.descriptionWe make use of the phase space density approach to discuss gravitino as a warm dark matter candidate. Barring fine tuning between the reheat temperature in the Universe and superparticle masses, we find that \emph{warm} gravitinos have both appropriate total mass density, Omega_{\tilde G} = Ω_{DM} \simeq 0.2, and suitable primordial phase space density at low momenta provided that their mass is in the range 1 keV \lesssim \mg \lesssim 15 keV, the reheat temperature in the Universe is low, T_R \lesssim 10 TeV, and masses of some of the superparticles are sufficiently small, M \lesssim 350 GeV. The latter property implies that the gravitino warm dark matter scenario will be either ruled out or supported by the LHC experiments.
dc.description18 pages, 5 figures. Replaced with journal version
dc.identifierhttps://arxiv.org/abs/0805.2836
dc.identifierhttp://arxiv.org/abs/0805.2836
dc.identifierJHEP 0812:055,2008
dc.identifierdoi:10.1088/1126-6708/2008/12/055
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/218827
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.titleIs gravitino still a warm dark matter candidate?
dc.typetext

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