Abe, K, Abgrall, N, Ajima, Y, Aihara, H, Albert, JB, Andreopoulos, C ORCID: 0000-0003-2020-8215, Andrieu, B, Aoki, S, Araoka, O, Argyriades, J et al (show 401 more authors)
(2011)
Indication of Electron Neutrino Appearance from an Accelerator-Produced Off-Axis Muon Neutrino Beam.
PHYSICAL REVIEW LETTERS, 107 (4).
041801-.
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Abstract
The T2K experiment observes indications of ν(μ) → ν(e) appearance in data accumulated with 1.43×10(20) protons on target. Six events pass all selection criteria at the far detector. In a three-flavor neutrino oscillation scenario with |Δm(23)(2)| = 2.4×10(-3) eV(2), sin(2)2θ(23) = 1 and sin(2)2θ(13) = 0, the expected number of such events is 1.5±0.3(syst). Under this hypothesis, the probability to observe six or more candidate events is 7×10(-3), equivalent to 2.5σ significance. At 90% C.L., the data are consistent with 0.03(0.04) < sin(2)2θ(13) < 0.28(0.34) for δ(CP) = 0 and a normal (inverted) hierarchy.
Item Type: | Article |
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Additional Information: | 20 pages, 6 figures, version published in PRL |
Uncontrolled Keywords: | T2K Collaboration |
Depositing User: | Symplectic Admin |
Date Deposited: | 08 Apr 2016 14:48 |
Last Modified: | 16 Dec 2022 17:03 |
DOI: | 10.1103/PhysRevLett.107.041801 |
Related URLs: | |
URI: | https://livrepository.liverpool.ac.uk/id/eprint/3000086 |