Extended gamma-ray emission from Coy Dark Matter

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 int...

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Bibliographic Details
Published inJournal of cosmology and astroparticle physics Vol. 2014; no. 5; p. 9
Main Authors Bœhm, Céline, Dolan, Matthew J., McCabe, Christopher, Spannowsky, Michael, Wallace, Chris J.
Format Journal Article
LanguageEnglish
Published United States Institute of Physics (IOP) 01.05.2014
Subjects
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
B QUARKS
CERN LHC
Cosmology
Dark matter
Emission
Fittings
GAMMA RADIATION
High Energy Physics - Phenomenology
INFORMATION
Large Hadron Collider
Mathematical models
NONLUMINOUS MATTER
PARTICLES
Physics
POTENTIALS
Quarks
Searching
SIGNALS
SPACE
TEV RANGE 10-100
Online AccessGet full text
ISSN1475-7516
1475-7508
1475-7516
DOI10.1088/1475-7516/2014/05/009

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Summary: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.
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ISSN:1475-7516
1475-7508
1475-7516
DOI:10.1088/1475-7516/2014/05/009