Physical Review D 99
, 071103(R) (2019)
ISSN: 2470-0010, SCI
Search for light sterile neutrinos with the T2K far detector Super-Kamiokande at a baseline of 295 km
N. T. Hong Van et al. (T2K Collaboration)
We perform a search for light sterile neutrinos using the data from the T2K far detector at a baseline of
295 km, with an exposure of 14.7ð7.6Þ × 1020 protons on target in neutrino (antineutrino) mode.
A selection of neutral-current interaction samples is also used to enhance the sensitivity to sterile mixing.
No evidence of sterile neutrino mixing in the 3 þ 1 model was found from a simultaneous fit to the
charged-current muon, electron and neutral-current neutrino samples.We set the most stringent limit on the
sterile oscillation amplitude sin2 θ24 for the sterile neutrino mass splitting Δm2
41 < 3 × 10−3 eV2=c4.