Probing the Dark Matter mass and nature with neutrinos
2013 (English)In: Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, no 6, 038- p.Article in journal (Refereed) Published
We study the possible indirect neutrino signal from dark matter annihilations inside the Sun's core for relatively light dark matter masses in the O (10) GeV range. Due to their excellent energy reconstruction capabilities, we focus on the detection of this flux in liquid argon or magnetized iron calorimeter detectors, proposed for the next generation of far detectors of neutrino oscillation experiments and neutrino telescopes. The aim of the study is to probe the ability of these detectors to determine fundamental properties of the dark matter nature such as its mass or its relative annihilation branching fractions to different channels. We find that these detectors will be able to accurately measure the dark matter mass as long as the dark matter annihilations have a significant branching into the neutrino or at least the tau channel. We have also discovered degeneracies between different dark matter masses and annihilation channels, where a hard tau channel spectrum for a lower dark matter mass may mimic that of a softer quark channel spectrum for a larger dark matter mass. Finally, we discuss the sensitivity of the detectors to the different branching ratios and find that it is between one and two orders of magnitude better than the current bounds from those coming from analysis of Super-Kamiokande data.
Place, publisher, year, edition, pages
2013. no 6, 038- p.
dark matter experiments, neutrino detectors
IdentifiersURN: urn:nbn:se:kth:diva-133661DOI: 10.1088/1475-7516/2013/06/038ISI: 000321200100038ScopusID: 2-s2.0-84880731074OAI: oai:DiVA.org:kth-133661DiVA: diva2:663226
FunderEU, FP7, Seventh Framework Programme, PITN-GA-2011-289442
QC 201311112013-11-112013-11-082013-11-11Bibliographically approved