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dc.contributor.authorBoddy, Kimberly K.
dc.contributor.authorDienes, Keith R.
dc.contributor.authorKim, Doojin
dc.contributor.authorKumar, Jason
dc.contributor.authorPark, Jong-Chul
dc.contributor.authorThomas, Brooks
dc.date.accessioned2017-03-02T00:57:17Z
dc.date.available2017-03-02T00:57:17Z
dc.date.issued2016-11-30
dc.identifier.citationLines and boxes: Unmasking Dynamical Dark Matter through correlations in the MeV gamma-ray spectrum 2016, 94 (9) Physical Review Den
dc.identifier.issn2470-0010
dc.identifier.issn2470-0029
dc.identifier.doi10.1103/PhysRevD.94.095027
dc.identifier.urihttp://hdl.handle.net/10150/622700
dc.description.abstractIdentifying signatures of dark matter at indirect-detection experiments is generally more challenging for scenarios involving nonminimal dark sectors such as Dynamical Dark Matter (DDM) than for scenarios involving a single dark particle. This additional difficulty arises because the partitioning of the total dark-matter abundance across an ensemble of different constituent particles with different masses tends to "smear" the injection spectra of photons and other cosmic-ray particles that are produced via dark-matter annihilation or decay. As a result, the imprints of the dark sector on these cosmic-ray flux spectra typically take the form of continuum features rather than sharp peaks or lines. In this paper, however, we identify an unambiguous signature of nonminimal dark sectors such as DDM which can overcome these issues and potentially be observed at gamma-ray telescopes operating in the MeV range. We discuss the specific situations in which this signature can arise, and demonstrate that this signature can be exploited in order to significantly enhance our ability to resolve the unique spectral features of DDM and other nonminimal dark sectors at future gamma-ray facilities.
dc.description.sponsorshipCETUP*; National Science Foundation [PHY-1250573]; Department of Energy [DE-FG02-13ER41976]; National Science Foundation; U.S. Department of Energy [DE-SC0010296]; Basic Science Research Program through the National Research Foundation of Korea - Ministry of Education [NRF-2013R1A1A2061561]; Reed Collegeen
dc.language.isoenen
dc.publisherAMER PHYSICAL SOCen
dc.relation.urlhttp://link.aps.org/doi/10.1103/PhysRevD.94.095027en
dc.rights© 2016 American Physical Societyen
dc.titleLines and boxes: Unmasking Dynamical Dark Matter through correlations in the MeV gamma-ray spectrumen
dc.typeArticleen
dc.contributor.departmentUniv Arizona, Dept Physen
dc.identifier.journalPhysical Review Den
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en
dc.eprint.versionFinal published versionen
refterms.dateFOA2018-08-20T00:08:11Z
html.description.abstractIdentifying signatures of dark matter at indirect-detection experiments is generally more challenging for scenarios involving nonminimal dark sectors such as Dynamical Dark Matter (DDM) than for scenarios involving a single dark particle. This additional difficulty arises because the partitioning of the total dark-matter abundance across an ensemble of different constituent particles with different masses tends to "smear" the injection spectra of photons and other cosmic-ray particles that are produced via dark-matter annihilation or decay. As a result, the imprints of the dark sector on these cosmic-ray flux spectra typically take the form of continuum features rather than sharp peaks or lines. In this paper, however, we identify an unambiguous signature of nonminimal dark sectors such as DDM which can overcome these issues and potentially be observed at gamma-ray telescopes operating in the MeV range. We discuss the specific situations in which this signature can arise, and demonstrate that this signature can be exploited in order to significantly enhance our ability to resolve the unique spectral features of DDM and other nonminimal dark sectors at future gamma-ray facilities.


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