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Sensitivity of the Cherenkov Telescope Array to the detection of a dark matter signal in comparison to direct detection and collider experiments
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).
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Number of Authors: 8
2017 (English)In: Physical Review D: covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, E-ISSN 2470-0029, Vol. 96, no 8, 083002Article in journal (Refereed) Published
Abstract [en]

Imaging atmospheric Cherenkov telescopes (IACTs) that are sensitive to potential.-ray signals from dark matter (DM) annihilation above similar to 50 GeV will soon be superseded by the Cherenkov Telescope Array (CTA). CTA will have a point source sensitivity an order of magnitude better than currently operating IACTs and will cover a broad energy range between 20 GeV and 300 TeV. Using effective field theory and simplified models to calculate gamma-ray spectra resulting from DM annihilation, we compare the prospects to constrain such models with CTA observations of the Galactic center with current and near-future measurements at the Large Hadron Collider (LHC) and direct detection experiments. For DM annihilations via vector or pseudoscalar couplings, CTA observations will be able to probe DM models out of reach of the LHC, and, if DM is coupled to standard fermions by a pseudoscalar particle, beyond the limits of current direct detection experiments.

Place, publisher, year, edition, pages
2017. Vol. 96, no 8, 083002
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Physical Sciences
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URN: urn:nbn:se:su:diva-147927DOI: 10.1103/PhysRevD.96.083002ISI: 000412248300001OAI: oai:DiVA.org:su-147927DiVA: diva2:1149637
Available from: 2017-10-16 Created: 2017-10-16 Last updated: 2017-11-29Bibliographically approved

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Conrad, JanFarmer, BenSánchez-Conde, Miguel A.
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