The Double Chooz experiment presents improved measurements of the neutrino mixing angle Ɵ13 using the data collected in 467.90 live days from a detector positioned at an average distance of 1050m from two reactor cores at the Chooz nuclear power plant. Several novel techniques have been developed to achieve significant reductions of the backgrounds and systematic uncertainties with respect to previous publications, whereas the efficiency of the (Formula Presented.) signal has increased. The value of Ɵ13 is measured to be sin22Ɵ13 = 0.090-0.029+0.032 from a fit to the observed energy spectrum. Deviations from the reactor (Formula Presented.) prediction observed above a prompt signal energy of 4MeV and possible explanations are also reported. A consistent value of Ɵ13 is obtained from a fit to the observed rate as a function of the reactor power independently of the spectrum shape and background estimation, demonstrating the robustness of the Ɵ13 measurement despite the observed distortion.

Abe, Y., dos Anjos, J., Barriere, J., Baussan, E., Bekman, I., Bergevin, M., et al. (2014). Improved measurements of the neutrino mixing angle Ɵ13 with the double chooz detector. JOURNAL OF HIGH ENERGY PHYSICS, 2014(10) [10.1007/JHEP10(2014)086].

Improved measurements of the neutrino mixing angle Ɵ13 with the double chooz detector

Minotti A.;Porta A.;
2014

Abstract

The Double Chooz experiment presents improved measurements of the neutrino mixing angle Ɵ13 using the data collected in 467.90 live days from a detector positioned at an average distance of 1050m from two reactor cores at the Chooz nuclear power plant. Several novel techniques have been developed to achieve significant reductions of the backgrounds and systematic uncertainties with respect to previous publications, whereas the efficiency of the (Formula Presented.) signal has increased. The value of Ɵ13 is measured to be sin22Ɵ13 = 0.090-0.029+0.032 from a fit to the observed energy spectrum. Deviations from the reactor (Formula Presented.) prediction observed above a prompt signal energy of 4MeV and possible explanations are also reported. A consistent value of Ɵ13 is obtained from a fit to the observed rate as a function of the reactor power independently of the spectrum shape and background estimation, demonstrating the robustness of the Ɵ13 measurement despite the observed distortion.
Articolo in rivista - Articolo scientifico
Neutrino Detectors and Telescopes; Oscillation
English
Abe, Y., dos Anjos, J., Barriere, J., Baussan, E., Bekman, I., Bergevin, M., et al. (2014). Improved measurements of the neutrino mixing angle Ɵ13 with the double chooz detector. JOURNAL OF HIGH ENERGY PHYSICS, 2014(10) [10.1007/JHEP10(2014)086].
Abe, Y; dos Anjos, J; Barriere, J; Baussan, E; Bekman, I; Bergevin, M; Bezerra, T; Bezrukov, L; Blucher, E; Buck, C; Busenitz, J; Cabrera, A; Caden, E; Camilleri, L; Carr, R; Cerrada, M; Chang, P; Chauveau, E; Chimenti, P; Collin, A; Conover, E; Conrad, J; Crespo-Anadon, J; Crum, K; Cucoanes, A; Damon, E; Dawson, J; Dhooghe, J; Dietrich, D; Djurcic, Z; Dracos, M; Elnimr, M; Etenko, A; Fallot, M; von Feilitzsch, F; Felde, J; Fernandes, S; Fischer, V; Franco, D; Franke, M; Furuta, H; Gil-Botella, I; Giot, L; Goger-Neff, M; Gonzalez, L; Goodenough, L; Goodman, M; Grant, C; Haag, N; Hara, T; Haser, J; Hofmann, M; Horton-Smith, G; Hourlier, A; Ishitsuka, M; Jochum, J; Jollet, C; Kaether, F; Kalousis, L; Kamyshkov, Y; Kaplan, D; Kawasaki, T; Kemp, E; de Kerret, H; Kryn, D; Kuze, M; Lachenmaier, T; Lane, C; Lasserre, T; Letourneau, A; Lhuillier, D; Lima, H; Lindner, M; Lopez-Castano, J; Losecco, J; Lubsandorzhiev, B; Lucht, S; Maeda, J; Mariani, C; Maricic, J; Martino, J; Matsubara, T; Mention, G; Meregaglia, A; Miletic, T; Milincic, R; Minotti, A; Nagasaka, Y; Nikitenko, Y; Novella, P; Oberauer, L; Obolensky, M; Onillon, A; Osborn, A; Palomares, C; Pepe, I; Perasso, S; Pfahler, P; Porta, A; Pronost, G; Reichenbacher, J; Reinhold, B; Rohling, M; Roncin, R; Roth, S; Rybolt, B; Sakamoto, Y; Santorelli, R; Schilithz, A; Schonert, S; Schoppmann, S; Shaevitz, M; Sharankova, R; Shimojima, S; Shrestha, D; Sibille, V; Sinev, V; Skorokhvatov, M; Smith, E; Spitz, J; Stahl, A; Stancu, I; Stokes, L; Strait, M; Stuken, A; Suekane, F; Sukhotin, S; Sumiyoshi, T; Sun, Y; Svoboda, R; Terao, K; Tonazzo, A; Trinh Thi, H; Valdiviesso, G; Vassilopoulos, N; Veyssiere, C; Vivier, M; Wagner, S; Walsh, N; Watanabe, H; Wiebusch, C; Winslow, L; Wurm, M; Yang, G; Yermia, F; Zimmer, V
File in questo prodotto:
File Dimensione Formato  
3_Abe2014_Article_ImprovedMeasurementsOfTheNeutr.pdf

Solo gestori archivio

Tipologia di allegato: Publisher’s Version (Version of Record, VoR)
Dimensione 2.4 MB
Formato Adobe PDF
2.4 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/316818
Citazioni
  • Scopus 228
  • ???jsp.display-item.citation.isi??? 243
Social impact