R-parity Violating Right-Handed Neutrino in Gravitino Dark Matter Scenario

Abstract

A decay of the gravitino dark matter is an attractive candidate to explain the current excesses of the PAMELA/ATIC cosmic-ray data. However, R-parity violations are required to be very tiny in low-energy scale. We suggest a R-parity violation in the right-handed neutrino sector. The violation is suppressed by a see-saw mechanism. Although a reheating temperature is constrained from above, the thermal leptogenesis is found to work successfully with a help of the R-parity violating right-handed neutrino.

arXiv comment13 pages, 1 figure

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• Axino dark matter with R-parity violation and 130 GeV gamma-ray line
• Flavour-Condensate-induced Breaking of Supersymmetry in Free Wess-Zumino Fluids
• Long-Lived stop at the LHC with or without R-parity
• Deep Correlation Between Cosmic-Ray Anomaly and Neutrino Masses
• A Froggatt-Nielsen Model for Leptophilic Scalar Dark Matter Decay
• Dark matter and neutrino masses in the R-parity violating NMSSM