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High Energy Physics - Phenomenology

arXiv:hep-ph/0411053 (hep-ph)
[Submitted on 3 Nov 2004]

Title:Kaluza-Klein Dark Matter, Electrons and Gamma Ray Telescopes

Authors:Edward A. Baltz, Dan Hooper
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Abstract: Kaluza-Klein dark matter particles can annihilate efficiently into electron-positron pairs, providing a discrete feature (a sharp edge) in the cosmic $e^+ e^-$ spectrum at an energy equal to the particle's mass (typically several hundred GeV to one TeV). Although this feature is probably beyond the reach of satellite or balloon-based cosmic ray experiments (those that distinguish the charge and mass of the primary particle), gamma ray telescopes may provide an alternative detection method. Designed to observe very high-energy gamma-rays, ACTs also observe the diffuse flux of electron-induced electromagnetic showers. The GLAST satellite, designed for gamma ray astronomy, will also observe any high energy showers (several hundred GeV and above) in its calorimeter. We show that high-significance detections of an electron-positron feature from Kaluza-Klein dark matter annihilations are possible with GLAST, and also with ACTs such as HESS, VERITAS or MAGIC.
Comments: 10 pages, 2 figures
Subjects: High Energy Physics - Phenomenology (hep-ph); Astrophysics (astro-ph)
Cite as: arXiv:hep-ph/0411053
  (or arXiv:hep-ph/0411053v1 for this version)
  https://doi.org/10.48550/arXiv.hep-ph/0411053
Journal reference: JCAP 0507:001,2005
Related DOI: https://doi.org/10.1088/1475-7516/2005/07/001

Submission history

From: Dan Hooper [view email]
[v1] Wed, 3 Nov 2004 17:53:00 UTC (35 KB)
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