Pinning down inelastic dark matter in the Sun and in direct detection
2016 (English)In: Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, E-ISSN 1475-7516, Vol. 2016, no 4, 004Article in journal (Refereed) PublishedText
We study the solar capture rate of inelastic dark matter with endothermic and/or exothermic interactions. By assuming that an inelastic dark matter signal will be observed in next generation direct detection experiments we can set a lower bound on the capture rate that is independent of the local dark matter density, the velocity distribution, the galactic escape velocity as well as the scattering cross section. In combination with upper limits from neutrino observatories we can place upper bounds on the annihilation channels leading to neutrinos. We find that, while endothermic scattering limits are weak in the isospin-conserving case, strong bounds may be set for exothermic interactions, in particular in the spin-dependent case. Furthermore, we study the implications of observing two direct detection signals, in which case one can halo-independently obtain the dark matter mass and the mass splitting, and disentangle the endothermic/exothermic nature of the scattering. Finally we discuss isospin violation.
Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2016. Vol. 2016, no 4, 004
dark matter experiments, dark matter theory
IdentifiersURN: urn:nbn:se:kth:diva-187090DOI: 10.1088/1475-7516/2016/04/004ScopusID: 2-s2.0-84963705514OAI: oai:DiVA.org:kth-187090DiVA: diva2:928942
QC 201605172016-05-172016-05-172016-05-17Bibliographically approved