Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-12-02
JHEP 0904:044,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
14 pages, v3 JHEP version
Scientific paper
10.1088/1126-6708/2009/04/044
We point out that when the decay of one electroweak scale super-WIMP state to another occurs at second order in a super-weak coupling constant, this can naturally lead to decay lifetimes that are much larger than the age of the Universe, and create observable consequences for the indirect detection of dark matter. We demonstrate this in a supersymmetric model with Dirac neutrinos, where the right-handed scalar neutrinos are the lightest and next-to-lightest supersymmetric partners. We show that this model produces a super-WIMP decay rate scaling as m_nu^4/(weak scale)^3, and may significantly enhance the fraction of energetic electrons and positrons over anti-protons in the decay products. Such a signature is consistent with the observations recently reported by the PAMELA experiment.
Pospelov Maxim
Trott Michael
No associations
LandOfFree
R-parity preserving super-WIMP decays 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 R-parity preserving super-WIMP decays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and R-parity preserving super-WIMP decays will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-718627