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
Keywords
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.