Search for light sterile neutrinos with the T2K far detector Super-Kamiokande at a baseline of 295 km

Date

2019

Authors

Abe, K.
Akutsu, R.
Ali, A.
Andreopoulos, C.
Anthony, L.
Antonova, M.
Aoki, S.
Ariga, A.
Ashida, Y.
Awataguchi, Y.

Journal Title

Journal ISSN

Volume Title

Publisher

Physical Review D

Abstract

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 14.7 ( 7.6 ) × 10 20 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 + 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 sin 2 θ 24 for the sterile neutrino mass splitting Δ m 2 41 < 3 × 10 − 3     eV 2 / c 4 .

Description

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Citation

Abe, K., Akutsu, R., Ali, A., Andreopoulos, C., Anthony, L., Karlen, D., … Zykova, A. (2019). Search for light sterile neutrinos with the T2K far detector Super-Kamiokande at a baseline of 295 km. Physical Review D, 99(7), 1-10. https://doi.org/10.1103/PhysRevD.99.071103.