Indication of electron neutrino appearance from an accelerator-produced off-axis muon neutrino beam.

Indication of electron neutrino appearance from an accelerator-produced off-axis muon neutrino beam.

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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...

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Xehetasun bibliografikoak
Egile Nagusiak: Abe, K, Abgrall, N, Ajima, Y, Aihara, H, Albert, J, Andreopoulos, C, Andrieu, B, Aoki, S, Araoka, O, Argyriades, J, Ariga, A, Ariga, T, Assylbekov, S, Autiero, D, Badertscher, A, Barbi, M, Barker, G, Barr, G, Bass, M, Bay, F, Bentham, S, Berardi, V, Berger, B, Bertram, I, Besnier, M
Formatua: Journal article
Hizkuntza:English
Argitaratua: 2011
Deskribapena
Gaia: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.

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