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

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

doi:10.1103/PhysRevD.99.071103

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

T2K

Collaboration

•

K. Abe
(
- Kamioka Observ.
)

Feb 18, 2019

10 pages

Published in:

Phys.Rev.D 99 (2019) 7, 071103

Published: May 1, 2019

e-Print:

1902.06529 [hep-ex]

DOI:

10.1103/PhysRevD.99.071103 (publication)

Experiments:

T2K

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Abstract: (APS)

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)×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+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 sin2θ24 for the sterile neutrino mass splitting Δm412<3×10-3 eV2/c4.

Note:

9 pages, 4 figures

neutrino/mu: secondary beam
antineutrino/mu: secondary beam
neutrino: sterile
neutrino: mixing
neutrino: mass difference
neutrino: mixing angle
KAMIOKANDE
neutral current
far detector
J-PARC Lab

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