Journal
PHYSICAL REVIEW D
Volume 87, Issue 12, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.87.123008
Keywords
-
Funding
- labex grant ENIGMASS
- ANR grant DMAstroLHC
- European Research Council through the ERC Starting Grant WIMPs Kairos''
Ask authors/readers for more resources
We consider the propagation and energy losses of protons and antiprotons produced by dark matter annihilation at redshifts 100 < z less than or similar to 2000. In the case of dark matter annihilations into quarks, gluons and weak gauge bosons, protons and antiprotons carry about 20% of the energy injected into e(+/-) and gamma's, but their interactions are normally neglected when deriving cosmic microwave background bounds from altered recombination histories. Here, we follow numerically the energy-loss history of typical protons/antiprotons in the cosmological medium. We show that about half of their energy is channeled into photons and e(+/-), and we present a simple prescription to estimate the corresponding strengthening of the cosmic microwave background bounds on the dark matter annihilation cross section.
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