Breit-Wigner Enhancement of Dark Matter Annihilation
Journal Article
·
· Phys.Rev.D79:095009,2009
We point out that annihilation of dark matter in the galactic halo can be enhanced relative to that in the early universe due to a Breit-Wigner tail, if the dark matter annihilates through a pole just below the threshold. This provides a new explanation to the 'boost factor' which is suggested by the recent data of the PAMELA, ATIC and PPB-BETS cosmic-ray experiments.
- Research Organization:
- Stanford Linear Accelerator Center (SLAC)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 957441
- Report Number(s):
- SLAC-PUB-13479; arXiv:0812.0072
- Journal Information:
- Phys.Rev.D79:095009,2009, Journal Name: Phys.Rev.D79:095009,2009 Vol. 79; ISSN PRVDAQ; ISSN 1550-7998
- Country of Publication:
- United States
- Language:
- English
Similar Records
Enhancement of dark matter annihilation via Breit-Wigner resonance
Nambu--Goldstone Dark Matter and Cosmic Ray Electron and Positron Excess
Protohalo constraints to the resonant annihilation of dark matter
Journal Article
·
Sat Feb 28 23:00:00 EST 2009
· Physical Review. D, Particles Fields
·
OSTI ID:21260106
Nambu--Goldstone Dark Matter and Cosmic Ray Electron and Positron Excess
Journal Article
·
Fri Jun 19 00:00:00 EDT 2009
· JHEP 0904:087,2009
·
OSTI ID:957434
Protohalo constraints to the resonant annihilation of dark matter
Journal Article
·
Thu Oct 15 00:00:00 EDT 2009
· Physical Review. D, Particles Fields
·
OSTI ID:21325297