Non-thermal Dark Matter and the Moduli Problem in String Frameworks
Apr, 2008
40 pages
Published in:
- JHEP 06 (2008) 064
e-Print:
- 0804.0863 [hep-ph]
Report number:
- UCB-PTH-08-06,
- MCTP-08-10
View in:
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Abstract: (arXiv)
We address the cosmological moduli/gravitino problems and the issue of too little thermal but excessive non-thermal dark matter from the decays of moduli. The main examples we study are the G2-MSSM models arising from M theory compactifications, which allow for a precise calculation of moduli decay rates and widths. We find that the late decaying moduli satisfy both BBN constraints and avoid the gravitino problem. The non-thermal production of wino LSPs, which is a prediction of G2-MSSM models, gives a relic density of about the right order of magnitude.Note:
- 40 pages, 5 figures
- cosmological model
- dark matter
- string model
- moduli: decay
- moduli: width
- M-theory: compactification
- minimal supersymmetric standard model: G(2)
- nucleosynthesis
- gravitino: production
- Wino: production
References(69)
Figures(7)