Journal
PHYSICAL REVIEW LETTERS
Volume 104, Issue 15, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.104.151301
Keywords
-
Categories
Funding
- NSF [PHY-0653656, PHY-0709742, PHY-0855462]
- NASA [NNX09AD09G]
- Division Of Physics
- Direct For Mathematical & Physical Scien [0855462] Funding Source: National Science Foundation
Ask authors/readers for more resources
Dark matter with Sommerfeld-enhanced annihilation has been proposed to explain observed cosmic ray positron excesses in the 10 GeV to TeV energy range. We show that the required enhancement implies thermal relic densities that are too small to be all of dark matter. We also show that the dark matter is sufficiently self-interacting that observations of elliptical galactic dark matter halos exclude large Sommerfeld enhancement for light force carriers. Resonant Sommerfeld enhancement does not modify these conclusions, and the astrophysical boosts required to resolve these discrepancies are disfavored, especially when significant self-interactions suppress halo substructure.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available