KATRIN Sensitivity to Sterile Neutrino Mass in the Shadow of Lightest Neutrino Mass

Details KATRIN Sensitivity to Sterile Neutrino Mass in the Shadow of Lightest Neutrino Mass KATRIN Sensitivity to Sterile Neutrino Mass in the Shadow of Lightest Neutrino Mass

2012-03-12

arxiv.org/abs/1203.2632v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures

Scientific paper

The presence of light sterile neutrinos would strongly modify the energy spectrum of the Tritium \beta-electrons. We perform an analysis of the KATRIN experiment's sensitivity by scanning almost all the allowed region of neutrino mass-squared difference and mixing angles of the 3+1 scenario. We consider the effect of the unknown absolute mass scale of active neutrinos on the sensitivity of KATRIN to the sterile neutrino mass. We show that after 3 years of data-taking, the KATRIN experiment can be sensitive to mixing angles as small as sin^2 (2\theta_s) ~ 10^-2. Particularly we show that for small mixing angles, sin^2 (2\theta_s) < 0.1, the KATRIN experiment can gives the strongest limit on active-sterile mass-squared difference.

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