Gravitino Dark Matter without R-parity

Details Gravitino Dark Matter without R-parity Gravitino Dark Matter without R-parity

2000-05-22

arxiv.org/abs/hep-ph/0005214v1

Phys.Lett.B485:388-392,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 1 figure

Scientific paper

10.1016/S0370-2693(00)00726-7

Cosmological issues are examined when gravitino is the lightest superparticle (LSP) and R-parity is broken. Decays of the next lightest superparticles occur rapidly via R-parity violating interaction, and thus they do not upset the big-bang nucleosynthesis, unlike the R-parity conserving case. The gravitino LSP becomes unstable, but its lifetime is typically much longer than the age of the Universe. It turns out that observations of diffuse photon background coming from radiative decays of the gravitino do not severely constrain the gravitino abundance, and thus the gravitino weighing less than around 1 GeV can be dark matter of the Universe when bilinear R-parity violation generates a neutrino mass which accounts for the atmospheric neutrino anomaly.

Affiliated with

Also associated with

No associations

Rating

Gravitino Dark Matter without R-parity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Gravitino Dark Matter without R-parity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravitino Dark Matter without R-parity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-82869