Non-thermal Dark Matter and the Moduli Problem in String Frameworks

Abstract

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.

41 pages, 5 figures, references and minor comments added

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Cited by in corpus (11)

• The $G_2$-MSSM - An $M$ Theory motivated model of Particle Physics
• Volume Modulus Inflation and the Gravitino Mass Problem
• The Leptonic Higgs as a Messenger of Dark Matter
• Mirage in the Sky: Non-thermal Dark Matter, Gravitino Problem, and Cosmic Ray Anomalies
• The PAMELA excess from neutralino annihilation in the NMSSM
• On the Suppression of Parametric Resonance and the Viability of Tachyonic Preheating after Multi-Field Inflation
• Neutralino Dark Matter in BMSSM Effective Theory
• Direct/indirect detection signatures of nonthermally produced dark matter
• Neutralino Dark Matter from Indirect Detection Revisited
• Diffuse gamma-ray background and cosmic-ray positrons from annihilating dark matter
• Neutrino Masses, Baryon Asymmetry, Dark Matter and the Moduli Problem : A Complete Framework