Is gravitino still a warm dark matter candidate?
In: JHEP 0812:055,2008; (2008)
Online
report
Zugriff:
We 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} = \Omega_{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.
Comment: 18 pages, 5 figures. Replaced with journal version
Titel: |
Is gravitino still a warm dark matter candidate?
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Autor/in / Beteiligte Person: | Gorbunov, D. ; Khmelnitsky, A. ; Rubakov, V. |
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Quelle: | JHEP 0812:055,2008; (2008) |
Veröffentlichung: | 2008 |
Medientyp: | report |
DOI: | 10.1088/1126-6708/2008/12/055 |
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