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Extended gamma-ray emission from Coy Dark Matter.

Bœhm, Celine and Dolan, Matthew J. and McCabe, Christopher and Spannowsky, Michael (2014) 'Extended gamma-ray emission from Coy Dark Matter.', Journal of cosmology and astroparticle physics., 2014 (05). 009.


We show that it is possible for WIMP dark matter to produce a large signal in indirect dark matter searches without producing signals elsewhere. We illustrate our point by fitting the Fermi-LAT extended galactic gamma-ray excess with a simple model of Dirac dark matter that annihilates primarily into b quarks via a pseudoscalar. Current collider constraints are weak while the 14 TeV LHC run will constrain a limited portion of the parameter space. No signal is expected in additional indirect searches or at future direct detection experiments. Our results emphasise the importance of fully understanding potential indirect signals of dark matter as they may provide the only information about the dark matter particle.

Item Type:Article
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Publisher statement:Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Date accepted:07 April 2014
Date deposited:06 June 2018
Date of first online publication:08 May 2014
Date first made open access:No date available

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