Work

Extended gamma-ray emission from Coy Dark Matter

Year: 2014

Type: article

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.

Source: Journal of Cosmology and Astroparticle Physics

DOI: 10.1088/1475-7516/2014/05/009

Authors: Céline Bœhm, Matthew J. Dolan, Christopher McCabe, Michael Spannowsky, Chris J. Wallace

Institutions: Centre National de la Recherche Scientifique, Durham University, Laboratoire d'Annecy de Physique Théorique, SLAC National Accelerator Laboratory

Language: English

Topic: Dark Matter and Cosmic Phenomena

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,290

Funder: European Commission