1. Indication of Reactorν¯eDisappearance in the Double Chooz Experiment
- Author
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A. Cucoanes, F. Ardellier, M. Obolensky, M. Dracos, H. de Kerret, D. Shrestha, R. Svoboda, C. L. Jones, J. Maeda, I. Ostrovskiy, R. Santorelli, A. Tonazzo, C. Jollet, M. Franke, A. F. Barbosa, T. Hayakawa, J. Tm. Goon, I. Gil-Botella, Daniel M. Kaplan, G. Keefer, J.V. Dawson, R. Milincic, Tobias Lachenmaier, C. E. Lane, B. Guillon, J. Reichenbacher, J. Spitz, M. Worcester, N. Tamura, M. Dierckxsens, M. Cribier, J. Haser, G. Mention, H. Miyata, M. Kuze, K. Nakajima, C. Langbrandtner, J. Hartnell, Z. Sun, Christian Buck, H. P. Lima, M. Cerrada, C. Aberle, Yasushi Nagasaka, S. Cormon, Muriel Fallot, T. Classen, E. Kemp, J. Busenitz, Janet Conrad, E. Damon, S. Perasso, S. Roth, C. N. Maesano, C. Mariani, Th. A. Mueller, E. Caden, A. Onillon, W. Potzel, T. Kawasaki, D. Dietrich, Matthew L Strait, A. Hatzikoutelis, M. D. Skorokhvatov, Michael Wurm, H. Watanabe, A. Bernstein, Florian Kaether, Y. Kibe, J. Felde, Z. Djurcic, A. Osborn, A. Milzstajn, D. Franco, C. Palomares, K. Zbiri, D. E. Reyna, S. M. Fernandes, Yu. Efremenko, M. Bongrand, Ying Sun, Alain Letourneau, L. Bezrukhov, T.J.C. Bezerra, U. Schwan, Kazuhiro Terao, Yuri Kamyshkov, F. von Feilitzsch, Caren Hagner, R. Gama, Amanda Porta, H. H. Trinh Thi, T. Miletic, P. Perrin, A. Meregaglia, D. Kryn, J. Maricic, Christopher Wiebusch, J. M. LoSecco, David Lhuillier, Lothar Oberauer, Bayarto Lubsandorzhiev, B. White, P.-J. Chang, Masaki Ishitsuka, E. Falk, M. Elnimr, Thierry Lasserre, V. V. Sinev, M. Göger-Neff, H. Furuta, G. A. Horton-Smith, M. C. Goodman, F. Yermia, V. Durand, Lindley Winslow, Anatael Cabrera, F. X. Hartmann, E. Yanovitch, Y. Sakamoto, H. A. Rubin, Michael Hofmann, B. Reinhold, F. Sato, M. H. Shaevitz, Luis González, Nathaniel Bowden, Thomas Schwetz, E. Conover, H. Tabata, J. C. dos Anjos, V. Zimmer, L.N. Kalousis, M. Toups, I. M. Pepe, A. Baxter, A. Stüken, Steven Dazeley, R. Carr, D. Greiner, Yoshio Abe, L. Camilleri, Lydie Giot, M. V. d'Agostino, J. Martino, Sebastian Wagner, Manfred Lindner, Antoine Collin, E. Blucher, M. Röhling, S. Schönert, Y. Endo, P. Pfahler, M. Fechner, P. Chimenti, A.V. Etenko, T. Matsubara, J. M. López-Castanõ, I. Stancu, S. J. M. Peeters, T. Akiri, Stefan Schoppmann, D. Mckee, T. Haruna, Yehan Liu, T. Konno, A. Remoto, F. Suekane, P. Novella, T. Sumiyoshi, D. Motta, T. Hara, A. Stahl, J. L. Sida, R. Queval, M. Bergevin, J. Jochum, K. Crum, A. J. Franke, S. V. Sukhotin, J. I. Crespo-Anadón, E. Smith, N. Haag, S. Lucht, and C. Veyssiere
- Subjects
NOνA ,Physics ,Particle physics ,Muon ,010308 nuclear & particles physics ,General Physics and Astronomy ,Flux ,Daya Bay Reactor Neutrino Experiment ,CHOOZ ,7. Clean energy ,01 natural sciences ,Nuclear physics ,0103 physical sciences ,High Energy Physics::Experiment ,Neutrino ,Nuclear Experiment ,010306 general physics ,Neutrino oscillation ,Electron neutrino - Abstract
The Double Chooz experiment presents an indication of reactor electron antineutrino disappearance consistent with neutrino oscillations. An observed-to-predicted ratio of events of 0.944±0.016(stat)±0.040(syst) was obtained in 101 days of running at the Chooz nuclear power plant in France, with two 4.25GWth reactors. The results were obtained from a single 10m3 fiducial volume detector located 1050 m from the two reactor cores. The reactor antineutrino flux prediction used the Bugey4 flux measurement after correction for differences in core composition. The deficit can be interpreted as an indication of a nonzero value of the still unmeasured neutrino mixing parameter sin22θ13. Analyzing both the rate of the prompt positrons and their energy spectrum, we find sin22θ13=0.086±0.041(stat)±0.030(syst), or, at 90% C.L., 0.017
- Published
- 2012
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