Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2015/02/020
Keywords
neutrino experiments; dark matter experiments; neutrino properties
Funding
- Feodor Lynen fellowship by the Alexander von Humboldt Foundation
- Helmholtz Association
- U.S. Department of Energy, Office of Science, Office of Nuclear Physics [DE-AC02-05CH11231]
- KIT
- KHYS
- European Research Council [StG-307184]
- BMBF [05A11PM2]
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We investigate the sensitivity of tritium beta-decay experiments for keV-scale sterile neutrinos. Relic sterile neutrinos in the keV mass range can contribute both to the cold and warm dark matter content of the universe. This work shows that a large-scale tritium beta-decay experiment, similar to the KATRIN experiment that is under construction, can reach a statistical sensitivity of the active-sterile neutrino mixing of sin(2) theta similar to 10(-8). The effect of uncertainties in the known theoretical corrections to the tritium beta-decay spectrum were investigated, and found not to affect the sensitivity significantly. It is demonstrated that controlling uncorrelated systematic effects will be one of the main challenges in such an experiment.
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