Reactor ν ̄e 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, E. Caden, L. Camilleri, R. Carr, M. Cerrada, P. J. Chang, P. Chimenti, T. ClassenA. P. Collin, E. Conover, J. M. Conrad, J. I. Crespo-Anadón, K. Crum, A. Cucoanes, M. V. D'Agostino, E. Damon, J. V. Dawson, S. Dazeley, D. Dietrich, Z. Djurcic, M. Dracos, V. Durand, J. Ebert, Y. Efremenko, M. Elnimr, A. Etenko, M. Fallot, M. Fechner, F. Von Feilitzsch, J. Felde, D. Franco, A. J. Franke, M. Franke, H. Furuta, R. Gama, I. Gil-Botella, L. Giot, M. Göger-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, M. Ishitsuka, J. Jochum, C. Jollet, C. L. Jones, F. Kaether, L. N. Kalousis, Y. Kamyshkov, D. M. Kaplan, T. Kawasaki, G. Keefer, E. Kemp, H. De Kerret, Y. Kibe, T. Konno, D. Kryn, M. Kuze, T. Lachenmaier, C. E. Lane, C. Langbrandtner, T. Lasserre, A. Letourneau, D. Lhuillier, H. P. Lima, 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, T. Matsubara, G. Mention, A. Meregaglia, T. Miletic, R. Milincic, H. Miyata, Th A. Mueller, Y. Nagasaka, K. Nakajima, P. Novella, M. Obolensky, L. Oberauer, A. Onillon, A. Osborn, I. Ostrovskiy, C. Palomares, I. M. Pepe, S. Perasso, P. Perrin, P. Pfahler, A. Porta, W. Potzel, J. Reichenbacher, B. Reinhold, A. Remoto, M. Röhling, R. Roncin, S. Roth, Y. Sakamoto, R. Santorelli, F. Sato, S. Schönert, 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. Stüken, F. Suekane, S. Sukhotin, T. Sumiyoshi, Y. Sun, R. Svoboda, K. Terao, A. Tonazzo, M. Toups, H. H. Trinh Thi, G. Valdiviesso, C. Veyssiere, S. Wagner, H. Watanabe, B. White, C. Wiebusch, L. Winslow, M. Worcester, M. Wurm, F. Yermia, V. Zimmer

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Abstract

The Double Chooz experiment has observed 8249 candidate electron antineutrino events in 227.93 live days with 33.71GW-ton-years (reactor power×detector mass×live time) exposure using a 10.3m3 fiducial volume detector located at 1050m from the reactor cores of the Chooz nuclear power plant in France. The expectation in case of θ 13=0 is 8937 events. The deficit is interpreted as evidence of electron antineutrino disappearance. From a rate plus spectral shape analysis we find sin22θ 13=0.109±0.030(stat)±0.025(syst) . The data exclude the no-oscillation hypothesis at 99.8%CL (2.9σ).

Original languageEnglish
Article number052008
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume86
Issue number5
DOIs
Publication statusPublished - 2012 Sep 18

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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    Abe, Y., Aberle, C., Dos Anjos, J. C., Barriere, J. C., Bergevin, M., Bernstein, A., Bezerra, T. J. C., Bezrukhov, L., Blucher, E., Bowden, N. S., Buck, C., Busenitz, J., Cabrera, A., Caden, E., Camilleri, L., Carr, R., Cerrada, M., Chang, P. J., Chimenti, P., ... Zimmer, V. (2012). Reactor ν ̄e disappearance in the Double Chooz experiment. Physical Review D - Particles, Fields, Gravitation and Cosmology, 86(5), [052008]. https://doi.org/10.1103/PhysRevD.86.052008