Abe, K, Abgrall, N, Aihara, H et al. (356 more authors) (2013) Evidence of electron neutrino appearance in a muon neutrino beam. Physical Review D, 88 (3). 032002. ISSN 1550-7998
Abstract
The T2K Collaboration reports evidence for electron neutrino appearance at the atmospheric mass splitting, | Δ m 2 32 | ≈ 2.4 × 10 − 3
eV 2 . An excess of electron neutrino interactions over background is observed from a muon neutrino beam with a peak energy of 0.6 GeV at the Super-Kamiokande (SK) detector 295 km from the beam’s origin. Signal and background predictions are constrained by data from near detectors located 280 m from the neutrino production target. We observe 11 electron neutrino candidate events at the SK detector when a background of 3.3 ± 0.4 ( syst ) events is expected. The background-only hypothesis is rejected with a p value of 0.0009 ( 3.1 σ ), and a fit assuming ν μ → ν e oscillations with sin 2 2 θ 23 = 1 , δ C P = 0 and | Δ m 2 32 | = 2.4 × 10 − 3
eV 2 yields sin 2 2 θ 13 = 0.088 + 0.049 − 0.039 ( stat + syst ) .
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 American Physical Society. This is an author produced version of a paper subsequently published in Physical Review D. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 18 Oct 2018 13:25 |
Last Modified: | 19 Jul 2022 03:51 |
Published Version: | https://doi.org/10.1103/PhysRevD.88.032002 |
Status: | Published |
Publisher: | American Physical Society |
Refereed: | Yes |
Identification Number: | 10.1103/PhysRevD.88.032002 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:135722 |