Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-12-17
Phys.Rev.D79:103513,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, 2 figures
Scientific paper
10.1103/PhysRevD.79.103513
In this letter, we suggest that a nearby clump of 600-1000 GeV neutralinos may be responsible for the excesses recently observed in the cosmic ray positron and electron spectra by the PAMELA and ATIC experiments. Although neutralino dark matter annihilating throughout the halo of the Milky Way is predicted to produce a softer spectrum than is observed, and violate constraints from cosmic ray antiproton measurements, a large nearby (within 1-2 kiloparsecs of the Solar System) clump of annihilating neutralinos can lead to a spectrum which is consistent with PAMELA and ATIC, while also producing an acceptable antiproton flux. Furthermore, the presence of a large dark matter clump can potentially accommodate the very large annihilation rate required to produce the PAMELA and ATIC signals.
Hooper Dan
Stebbins Albert
Zurek Kathryn M.
No associations
LandOfFree
The PAMELA and ATIC Excesses From a Nearby Clump of Neutralino 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 The PAMELA and ATIC Excesses From a Nearby Clump of Neutralino Dark Matter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The PAMELA and ATIC Excesses From a Nearby Clump of Neutralino Dark Matter will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-94435