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Reactor electron antineutrino disappearance in the Double Chooz experiment

Y. Abe C. Aberle J. C. Dos Anjos J. C. Barriere M. Bergevin A. Bernstein T. J. C. Bezerra L. Bezrukhov E. Blucher N. S. Bowden C. Buck J. Busenitz A. Cabrera 1 E. Caden L. Camilleri R. Carr M. Cerrada P. -J. Chang P. Chimenti T. Classen A. P. Collin 2 E. Conover J. M. Conrad J. I. Crespo-Anadón K. Crum A. Cucoanes 3 M. V. d'Agostino E. Damon J.V. Dawson 1 S. Dazeley D. Dietrich Z. Djurcic M. Dracos 4 V. Durand 1, 2 J. Ebert Y. Efremenko M. Elnimr A. Etenko Muriel Fallot 3 M. Fechner F. von Feilitzsch J. Felde D. Franco 1 A. J. Franke M. Franke H. Furuta R. Gama I. Gil-Botella Lydie Giot 3 M. Goger-Neff L. F. G. Gonzalez M. C. Goodman J. Tm. Goon D. Greiner N. Haag C. Hagner T. Hara F. X. Hartmann J. Haser A. Hatzikoutelis T. Hayakawa M. Hofmann G. A. Horton-Smith A. Hourlier 1 M. Ishitsuka J. Jochum C. Jollet 4 C. L. Jones F. Kaether L. N. Kalousis Y. Kamyshkov D. M. Kaplan T. Kawasaki G. Keefer E. Kemp H. de Kerret 1 Y. Kibe T. Konno D. Kryn 1 M. Kuze T. Lachenmaier C. E. Lane C. Langbrandtner T. Lasserre 1, 2 A. Letourneau 2 D. Lhuillier 2 H. P. Lima Jr M. Lindner J. M. López-Castanõ J. M. Losecco B. K. Lubsandorzhiev S. Lucht D. Mckee J. Maeda C. N. Maesano C. Mariani J. Maricic J. Martino 3 T. Matsubara G. Mention 2 A. Meregaglia 4 T. Miletic R. Milincic H. Miyata Th. A. Mueller 2 Y. Nagasaka K. Nakajima P. Novella M. Obolensky 1 L. Oberauer A. Onillon 3 A. Osborn I. Ostrovskiy C. Palomares I. M. Pepe S. Perasso P. Perrin 2 P. Pfahler A. Porta 3 W. Potzel J. Reichenbacher B. Reinhold A. Remoto 1, 3 M. Rohling R. Roncin 1 S. Roth Y. Sakamoto R. Santorelli F. Sato S. Schonert S. Schoppmann T. Schwetz M. H. Shaevitz S. Shimojima D. Shrestha J-L. Sida V. Sinev M. Skorokhvatov E. Smith J. Spitz A. Stahl I. Stancu L. F. F. Stokes M. Strait A. Stuken F. Suekane S. Sukhotin T. Sumiyoshi Y. Sun R. Svoboda K. Terao A. Tonazzo 1 M. Toups H. H. Trinh Thi G. Valdiviesso C. Veyssiere 2 S. Wagner H. Watanabe B. White C. Wiebusch L. Winslow M. Worcester M. Wurm Frédéric Yermia 3 V. Zimmer
Abstract : The Double Chooz experiment has observed 8,249 candidate electron antineutrino events in 227.93 live days with 33.71 GW-ton-years (reactor power x detector mass x livetime) exposure using a 10.3 cubic meter fiducial volume detector located at 1050 m from the reactor cores of the Chooz nuclear power plant in France. The expectation in case of theta13 = 0 is 8,937 events. The deficit is interpreted as evidence of electron antineutrino disappearance. From a rate plus spectral shape analysis we find sin^2 2{\theta}13 = 0.109 \pm 0.030(stat) \pm 0.025(syst). The data exclude the no-oscillation hypothesis at 99.9% CL (3.1{\sigma}).
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Submitted on : Thursday, August 2, 2012 - 3:18:38 PM
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Y. Abe, C. Aberle, J. C. Dos Anjos, J. C. Barriere, M. Bergevin, et al.. Reactor electron antineutrino disappearance in the Double Chooz experiment. Physical Review D, American Physical Society, 2012, 86, pp.052008. ⟨10.1103/PhysRevD.86.052008⟩. ⟨in2p3-00722579⟩

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