Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-06-09
JCAP 0508 (2005) 006
Astronomy and Astrophysics
Astrophysics
16 pages IOP latex style, 5 figures. Slightly updated to match the published version (including, in particular, an extended di
Scientific paper
10.1088/1475-7516/2005/08/006
The lightest Kaluza-Klein particle (LKP) in models with universal extra dimensions is an interesting dark matter candidate that has recently received great attention. Here, we investigate the antiproton flux from LKP annihilations in the galactic halo. In our analysis we include different halo density profiles and allow for part of the dark matter to be concentrated in 'clumps' rather than being distributed homogeneously. After re-analyzing the observational bounds on the allowed amount of clumpiness, we find that LKP annihilations may well give a significant contribution to the antiproton flux at energies higher than about 10 GeV, while for energies above around 500 GeV the conventional background is expected to dominate again. The shortly upcoming PAMELA satellite will already be able to measure part of this high-energy window, while planned experiments like AMS-02 will have access to the full energy range of interest.
No associations
LandOfFree
High-energetic Cosmic Antiprotons from Kaluza-Klein Dark Matter 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 High-energetic Cosmic Antiprotons from Kaluza-Klein Dark Matter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-energetic Cosmic Antiprotons from Kaluza-Klein Dark Matter will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-730271