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Probing the inert doublet dark matter model with Cherenkov telescopes

dc.contributor.authorGarcia-Cely, Camilo
dc.contributor.authorGustafsson, Michael
dc.contributor.authorIbarra, Alejandro
dc.date.accessioned2016-04-18T12:18:48Z
dc.date.available2016-04-18T12:18:48Z
dc.date.issued2016
dc.relation.ISSN1475-7516
dc.identifier.urihttp://resolver.sub.uni-goettingen.de/purl?gs-1/13217
dc.description.abstractWe present a detailed study of the annihilation signals of the inert dark matter doublet model in its high mass regime. Concretely, we study the prospects to observe gamma-ray signals of the model in current and projected Cherenkov telescopes taking into account the Sommerfeld e ect and including the contribution to the spectrum from gammaray lines as well as from internal bremsstrahlung. We show that present observations of the galactic center by the H.E.S.S. instrument are able to exclude regions of the parameter space that give the correct dark matter relic abundance. In particular, models with the charged and the neutral components of the inert doublet nearly degenerate in mass have strong gamma-ray signals. Furthermore, for dark matter particle masses above 1TeV, we nd that the non-observation of the continuum of photons generated by the hadronization of the annihilation products typically give stronger constraints on the model parameters than the sharp spectral features associated to annihilation into monochromatic photons and the internal bremsstrahlung process. Lastly, we also analyze the interplay between indirect and direct detection searches for this model, concluding that the prospects for the former are more promising. In particular, we nd that the upcoming Cherenkov Telescope Array will be able to probe a signi cant part of the high mass regime of the model.
dc.language.isoeng
dc.relationinfo:eu-repo/grantAgreement/EC/FP7/289442/EU//INVISIBLES
dc.rightsopenAccess
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/
dc.subjectdark matter theory; dark matter experiments; gamma ray experiments; gamma ray detectors
dc.titleProbing the inert doublet dark matter model with Cherenkov telescopes
dc.typejournalArticle
dc.identifier.doi10.1088/1475-7516/2016/02/043
dc.type.versionpublishedVersion
dc.bibliographicCitation.volume2016
dc.bibliographicCitation.issue02
dc.type.subtypejournalArticle
dc.bibliographicCitation.articlenumber043
dc.relation.euprojectITN Invisibles
dc.description.statuspeerReviewed
dc.bibliographicCitation.journalJournal of Cosmology and Astroparticle Physics


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