Rights statement: © 2011 American Physical Society
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Indication of electron neutrino appearance from an accelerator-produced off-axis muon neutrino beam
AU - Abe, K.
AU - Abgrall, N.
AU - Ajima, Y.
AU - Aihara, H.
AU - Albert, J. B.
AU - Andreopoulos, C.
AU - Andrieu, B.
AU - Aoki, S.
AU - Araoka, O.
AU - Argyriades, J.
AU - Ariga, A.
AU - Ariga, T.
AU - Assylbekov, S.
AU - Autiero, D.
AU - Badertscher, A.
AU - Barbi, M.
AU - Barker, G. J.
AU - Barr, G.
AU - Bass, M.
AU - Bay, F.
AU - Bentham, S.
AU - Berardi, V.
AU - Berger, B. E.
AU - Bertram, I.
AU - Besnier, M.
AU - Beucher, J.
AU - Beznosko, D.
AU - Bhadra, S.
AU - Blaszczyk, F. D. M. M.
AU - Blondel, A.
AU - Bojechko, C.
AU - Bouchez, J.
AU - Boyd, S. B.
AU - Bravar, A.
AU - Bronner, C.
AU - Brook-Roberge, D. G.
AU - Buchanan, N.
AU - Budd, H.
AU - Calvet, D.
AU - Cartwright, S. L.
AU - Carver, A.
AU - Castillo, R.
AU - Catanesi, M. G.
AU - Cazes, A.
AU - Finch, Alexander
AU - Grant, N.
AU - Hatzikoutelis, A.
AU - Maryon, T.
AU - Nowak, Jaroslaw
AU - Kormos, Laura
AU - T2K Collaboration
N1 - © 2011 American Physical Society
PY - 2011/7/18
Y1 - 2011/7/18
N2 - The T2K experiment observes indications of nu(mu) -> nu(mu) e appearance in data accumulated with 1.43 x 10(20) protons on target. Six events pass all selection criteria at the far detector. In a three-flavor neutrino oscillation scenario with |Delta m(23)(2)| = 2.4 x 10(-3) eV(2), sin(2)2 theta(23) = 1 and sin(2)2 theta(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 x 10(-3), equivalent to 2.5 sigma significance. At 90% C.L., the data are consistent with 0.03(0.04) < sin(2)2 theta(13) < 0.28(0.34) for delta(CP) = 0 and a normal (inverted) hierarchy.
AB - The T2K experiment observes indications of nu(mu) -> nu(mu) e appearance in data accumulated with 1.43 x 10(20) protons on target. Six events pass all selection criteria at the far detector. In a three-flavor neutrino oscillation scenario with |Delta m(23)(2)| = 2.4 x 10(-3) eV(2), sin(2)2 theta(23) = 1 and sin(2)2 theta(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 x 10(-3), equivalent to 2.5 sigma significance. At 90% C.L., the data are consistent with 0.03(0.04) < sin(2)2 theta(13) < 0.28(0.34) for delta(CP) = 0 and a normal (inverted) hierarchy.
KW - OSCILLATIONS
UR - http://www.scopus.com/inward/record.url?scp=79961115124&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.107.041801
DO - 10.1103/PhysRevLett.107.041801
M3 - Journal article
VL - 107
JO - Physical review letters
JF - Physical review letters
SN - 1079-7114
IS - 4
M1 - 041801
ER -