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Measurement of Neutrino Oscillation with KamLAND: Evidence of Spectral Distortion

dc.contributor.authorARAKI, T.
dc.contributor.authorEGUCHI, K.
dc.contributor.authorENOMOTO, S.
dc.contributor.authorFURUNO, K.
dc.contributor.authorICHIMURA, K.
dc.contributor.authorIKEDA, H.
dc.contributor.authorINOUE, K.
dc.contributor.authorISHIHARA, K.
dc.contributor.authorIWAMOTO, T.
dc.contributor.authorKAWASHIMA, T.
dc.contributor.authorKISHIMOTO, Y.
dc.contributor.authorKOGA, M.
dc.contributor.authorKOSEKI, Y.
dc.contributor.authorMAEDA, T.
dc.contributor.authorMITSUI, T.
dc.contributor.authorMOTOKI, M.
dc.contributor.authorNAKAJIMA, K.
dc.contributor.authorOGAWA, H.
dc.contributor.authorOWADA, K.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorRICOL, J.-S.
dc.contributor.authorSHIMIZU, I.
dc.contributor.authorSHIRAI, J.
dc.contributor.authorSUEKANE, F.
dc.contributor.authorSUZUKI, A.
dc.contributor.authorTADA, K.
dc.contributor.authorTAJIMA, O.
dc.contributor.authorTAMAE, K.
dc.contributor.authorTSUDA, Y.
dc.contributor.authorWATANABE, H.
dc.contributor.authorBUSENITZ, J.
dc.contributor.authorCLASSEN, T.
dc.contributor.authorDJURCIC, Z.
dc.contributor.authorKEEFER, G.
dc.contributor.authorMCKINNY, K.
dc.contributor.authorMEI, D.-M.
dc.contributor.authorPIEPKE, A.
dc.contributor.authorYAKUSHEV, E.
dc.contributor.authorE. BERGER, B.
dc.contributor.authorD. CHAN, Y.
dc.contributor.authorP. DECOWSKI, M.
dc.contributor.authorDWYER, D.A.
dc.contributor.authorJ. FREEDMAN, S.
dc.contributor.authorFU, Y.
dc.contributor.authorK. FUJIKAWA, B.
dc.contributor.authorGOLDMAN, J.
dc.contributor.authorGRAY, F.
dc.contributor.authorM. HEEGER, K.
dc.contributor.authorT. LESKO, K.
dc.contributor.authorLUK, K.-B.
dc.contributor.authorMURAYAMA, H.
dc.contributor.authorW. P. POON, A.
dc.contributor.authorM. STEINER, H.
dc.contributor.authorA. WINSLOW, L.
dc.contributor.authorA. HORTON-SMITH, G.
dc.contributor.authorMAUGER, C.
dc.contributor.authorD. MCKEOWN, R.
dc.contributor.authorVOGEL, P.
dc.contributor.authorE. LANE, C.
dc.contributor.authorMILETIC, T.
dc.contributor.authorW. GORHAM, P.
dc.contributor.authorGUILLIAN, G.
dc.contributor.authorG. LEARNED, J.
dc.contributor.authorMARICIC, J.
dc.contributor.authorMATSUNO, S.
dc.contributor.authorPAKVASA, S.
dc.contributor.authorDAZELEY, S.
dc.contributor.authorHATAKEYAMA, S.
dc.contributor.authorROJAS, A.
dc.contributor.authorSVOBODA, R.
dc.contributor.authorD. DIETERLE, B.
dc.contributor.authorDETWILER, J.
dc.contributor.authorGRATTA, G.
dc.contributor.authorISHII, K.
dc.contributor.authorTOLICH, N.
dc.contributor.authorUCHIDA, Y.
dc.contributor.authorBATYGOV, M.
dc.contributor.authorBUGG, W.
dc.contributor.authorEFREMENKO, Y.
dc.contributor.authorKAMYSHKOV, Y.
dc.contributor.authorKOZLOV, A.
dc.contributor.authorNAKAMURA, Y.
dc.contributor.authorR. GOULD, C.
dc.contributor.authorJ. KARWOWSKI, H.
dc.contributor.authorM. MARKOFF, D.
dc.contributor.authorA. MESSIMORE, J.
dc.contributor.authorNAKAMURA, K.
dc.contributor.authorM. ROHM, R.
dc.contributor.authorTORNOW, W.
dc.contributor.authorWENDELL, R.
dc.contributor.authorR. YOUNG, A.
dc.contributor.authorCHEN, M.-J.
dc.contributor.authorWANG, Y.-F.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorPIQUEMAL, F.
dc.date.issued2005
dc.identifier.issn0031-9007
dc.description.abstractEnWe present results of a study of neutrino oscillation based on a 766 ton/year exposure of KamLAND to reactor antineutrinos. We observe 258 [overline nu ]e candidate events with energies above 3.4 MeV compared to 365.2±23.7 events expected in the absence of neutrino oscillation. Accounting for 17.8±7.3 expected background events, the statistical significance for reactor [overline nu ]e disappearance is 99.998%. The observed energy spectrum disagrees with the expected spectral shape in the absence of neutrino oscillation at 99.6% significance and prefers the distortion expected from [overline nu ]e oscillation effects. A two-neutrino oscillation analysis of the KamLAND data gives Deltam2=7.9<sub>-0.5</sub><sup>+0.6</sup>×10-5 eV2. A global analysis of data from KamLAND and solar-neutrino experiments yields Deltam2=7.9<sub>-0.5</sub><sup>+0.6</sup>×10-5 eV2 and tan2theta=0.40<sub>-0.07</sub><sup>+0.10</sup>, the most precise determination to date.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.title.enMeasurement of Neutrino Oscillation with KamLAND: Evidence of Spectral Distortion
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevLett.94.081801
dc.subject.halPhysique [physics]/Physique des Hautes Energies - Expérience [hep-ex]
dc.identifier.arxivhep-ex/0406035
bordeaux.journalPhysical Review Letters
bordeaux.page081801
bordeaux.volume94
bordeaux.peerReviewedoui
hal.identifierin2p3-00025603
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//in2p3-00025603v1
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