Rott, Carsten and Siegal-Gaskins, Jennifer M. and Beacom, John F. (2012) New Sensitivity to Solar WIMP Annihilation using Low-Energy Neutrinos. . (Submitted) http://resolver.caltech.edu/CaltechAUTHORS:20130117-105418827
PDF (arXiv:1208.0827v1 [astro-ph.HE])
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Dark matter particles captured by the Sun through scattering may annihilate and produce neutrinos, which escape. Current searches are for the few high-energy neutrinos produced in the prompt decays of some final states. We show that interactions in the solar medium lead to a large number of pions for nearly all final states. Positive pions and muons decay at rest, producing low-energy neutrinos with known spectra, including nuebar through neutrino mixing. We demonstrate that Super-Kamiokande can thereby provide a new probe of the spin-dependent WIMP-proton cross section. Compared to other methods, the sensitivity is competitive and the uncertainties are complementary.
|Item Type:||Report or Paper (Working Paper)|
|Additional Information:||Imported from arXiv. We are grateful to Basu Dasgupta, Louie Strigari, and Petr Vogel for helpful discussions. J.S.-G. was supported by NASA through Einstein Postdoctoral Fellowship grant PF1-120089 awarded by the Chandra X-ray Center, which is operated by the Smithsonian Astrophysical Observatory for NASA under contract NAS8-03060. J.F.B. was supported by NSF Grant PHY-1101216.|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||JoAnn Boyd|
|Deposited On:||08 Feb 2013 05:16|
|Last Modified:||08 Feb 2013 05:16|
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