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Extended gamma-ray emission from Coy Dark Matter

Bœhm, Celine; Dolan, Matthew J.; McCabe, Christopher; Spannowsky, Michael

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Authors

Celine Bœhm

Matthew J. Dolan

Christopher McCabe



Abstract

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.

Citation

Bœhm, C., Dolan, M. J., McCabe, C., & Spannowsky, M. (2014). Extended gamma-ray emission from Coy Dark Matter. Journal of Cosmology and Astroparticle Physics, 2014(05), Article 009. https://doi.org/10.1088/1475-7516/2014/05/009

Journal Article Type Article
Acceptance Date Apr 7, 2014
Online Publication Date May 8, 2014
Publication Date May 8, 2014
Deposit Date Dec 12, 2014
Publicly Available Date Jun 6, 2018
Journal Journal of Cosmology and Astroparticle Physics
Publisher IOP Publishing
Peer Reviewed Peer Reviewed
Volume 2014
Issue 05
Article Number 009
DOI https://doi.org/10.1088/1475-7516/2014/05/009

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright 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.







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