1 Department of Physics and Astronomy, Faculty of Science, Aarhus University, Aarhus University2 Department of Physics and Astronomy, Science and Technology, Aarhus University3 Department of Physics and Astronomy, Science and Technology, Aarhus University
A sterile neutrino with mass in the eV range, mixing with bar nue, is allowed and possibly even preferred by cosmology and oscillation experiments. If such eV-mass neutrinos exist they provide a much better target for direct detection in beta decay experiments than the active neutrinos which are expected to have sub-eV masses. Their relatively high mass would allow for an easy separation from the primary decay signal in experiments such as KATRIN.
Journal of Cosmology and Astroparticle Physics, 2011, Vol 02(2011)011