Robust Gamma Ray Signature of WIMP Dark Matter

Details Robust Gamma Ray Signature of WIMP Dark Matter Robust Gamma Ray Signature of WIMP Dark Matter

2005-07-15

arxiv.org/abs/hep-ph/0507194v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, 8 figures

Scientific paper

If dark matter consists of weakly interacting massive particles (WIMPs), annihilation of WIMPs in the galactic center may lead to an observable enhancement of high energy gamma ray fluxes. We predict the shape and normalization of the component of the flux due to final state radiation by charged particles produced in WIMP annihilation events. The prediction is made without any assumptions about the microscopic theory responsible for WIMPs, and depends only mildly on the unknown distribution of the total WIMP annihilation cross section among the possible final states. In particular, if the WIMPs annihilate into a pair of charged fermions (leptons or quarks), the photon spectrum possesses a sharp edge feature, dropping abruptly at a photon energy equal to the WIMP mass. If such a feature is observed, it would provide strong evidence for the WIMP-related nature of the flux enhancement, as well as a measurement of the WIMP mass. We discuss the prospects for observational discovery of this feature at ground-based and space-based gamma ray telescopes.

Affiliated with

Also associated with

No associations

Rating

Robust Gamma Ray Signature of WIMP 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 Robust Gamma Ray Signature of WIMP Dark Matter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Robust Gamma Ray Signature of WIMP Dark Matter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-411591