SHiP with a far detector at 120 m is projected to reach |U_alpha4|^2 ~ 10^-2 near Delta m^2_41 ~ 10^3 eV^2, exceeding current muon and tau mixing limits.
First measeurements in search for keV-sterile neutrino in tritium beta-decay by Troitsk nu-mass experiment
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
We present the first measurements of tritium beta-decay spectrum in the electron energy range 16-18.6 keV. The goal is to find distortions which may correspond to the presence of a heavy sterile neutrinos. A possible contribution of this kind would manifest itself as a kink in the spectrum with a similar shape but with end point shifted by the value of a heavy neutrino mass. We set a new upper limits to the neutrino mixing matrix element U^2_{e4} which improve existing limits by a factor from 2 to 5 in the mass range 0.1-2 keV.
citation-role summary
baseline 1
citation-polarity summary
fields
hep-ph 1years
2025 1verdicts
CONDITIONAL 1roles
baseline 1polarities
baseline 1representative citing papers
citing papers explorer
-
Probing the 3+1 neutrino model in the SHiP experiment
SHiP with a far detector at 120 m is projected to reach |U_alpha4|^2 ~ 10^-2 near Delta m^2_41 ~ 10^3 eV^2, exceeding current muon and tau mixing limits.