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Detection of branon dark matter with gamma ray telescopes

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López Maroto, Antonio and Ruiz Cembranos, José Alberto and Cruz Dombriz, Álvaro de la and Gammaldi, Viviana (2012) Detection of branon dark matter with gamma ray telescopes. Physical Review D, 85 (4). ISSN 1550-7998

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Official URL: http://dx.doi.org/10.1103/PhysRevD.85.043505


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Abstract

Branons are new degrees of freedom that appear in flexible brane-world models corresponding to brane fluctuations. These new fields can behave as standard weakly interacting massive particles (WIMPs) with a significant associated thermal relic density. We analyze the present constraints from their spontaneous annihilations into photons for Energetic Gamma-Ray Experiment Telescope (EGRET), Fermi Large Area Telescope (LAT), and Major Atmospheric Gamma-Ray Imaging Cherenkov (MAGIC) telescopes, and the prospects for detection in future Cherenkov telescopes. In particular, we focus on possible signals coming from the Galactic center and different dwarf spheroidals, such as Draco, Sagittarius, Canis Major and SEGUE 1. We conclude that for those targets, present observations are below the sensitivity limits for branon detection by assuming standard dark matter distributions and no additional boost factors. However, future experiments such as the Cherenkov Telescope Array (CTA) could be able to detect gamma-ray photons coming from the annihilation of branons with masses higher than 150 GeV.


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© 2012 American Physical Society.
We would like to thank Daniel Nieto for useful comments. This work has been supported by Ministerio de Ciencia y Innovación (Spain) project numbers FIS 2008- 01323, FPA 2008-00592, and Consolider-Ingenio Multimessenger Approach for Dark Matter Detection (MULTIDARK) CSD2009-00064. A. d. l. C.-D. also acknowledges the University Research Council, the National Research Foundation (South Africa), and Universidad Complutense de Madrid.

Uncontrolled Keywords:Large-Area Telescope, Goldstone Bosons, Annihilations, Fluctuations, Search, Halo
Subjects:Sciences > Physics
ID Code:25861
Deposited On:07 Jul 2014 14:44
Last Modified:19 Feb 2015 09:13

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