Indication of Reactor ν̅ e Disappearance in the Double Chooz Experiment

Y. Abe,C. Aberle,T. Akiri,J.C. dos Anjos,F. Ardellier,A.F Barbosa,A. Baxter,M. Bergevin,Adam Bernstein,T. J. C. Bezerra,L. Bezrukhov,E. Blucher,M. Bongrand,Nathaniel Bowden,C. Buck,J. Busenitz,A. Cabrera,E. Caden,L. Camilleri,R. Carr,M. Cerrada,P. J. Chang,P. Chimenti,T. Classen,Antoine Collin,E. Conover,Jan Conrad,S. Cormon,J.I. Crespo-Anadón,M. Cribier,K. Crum,A. Cucoanes,M. V. D'Agostino,E. Damon,J. V. Dawson,Steven Dazeley,M. Dierckxsens,D. Dietrich,Z. Djurcic,M. Dracos,V Durand,Yuri Efremenko,M. Elnimr,Y. Endo,A. Etenko,E. Falk,M Fallot,M. Fechner,F. von Feilitzsch,J. Felde,S. M. Fernandes,D. Franco,A.J. Franke,M. Franke,H. Furuta,R Gama,I. Gil-Botella,L. Giot,M. Göger-Neff,L. F. G. Gonzalez,Maury Goodman,J. Tm. Goon,D. Greiner,B. Guillon,N. Haag,C. Hagner,T. Hara,F. X. Hartmann,J. Hartnell,T. Haruna,J. Haser,A. Hatzikoutelis,T. Hayakawa,Michael Hofmann,G. A. Horton-Smith,Masaki Ishitsuka,J. Jochum,C. Jollet,C. L. Jones,F. Kaether,L. Kalousis,Yuri Kamyshkov,Daniel M. Kaplan,T. Kawasaki,G. Keefer,E. Kemp,H. de Kerret,Y. Kibe,T. Konno,D. Kryn,Masahiro Kuze,T. Lachenmaier,C.E. Lane,C. Langbrandtner,Thierry Lasserre,Alain Létourneau,D. Lhuillier,H. P. Lima,Manfred Lindner,Y. Liu,J. M. López-Castaño,J. M. LoSecco,B. K. Lubsandorzhiev,S. Lucht,D. McKee,J. Maeda,C. N. Maesano,Camillo Mariani,J. Maricic,J. Martino,T. Matsubara,Guillaume Mention,A. Meregaglia,T. Miletic,R. Milincic,A. Milzstajn,H. Miyata,D. Motta,Th. A. Mueller,Yasushi Nagasaka,K. Nakajima,P. Novella,M. Obolensky,L. Oberauer,A. Onillon,A. Osborn,I. Ostrovskiy,C. Palomares,S. J. M. Peeters,I.M. Pepe,S. Perasso,P. Perrin,P. Pfahler,A. Porta,W. Potzel,R. Quéval,J. Reichenbacher,B. Reinhold,A. Remoto,D. E. Reyna,M. Röhling,S. Roth,H. A. Rubin,Y. Sakamoto,R. Santorelli,F. Sato,Stefan Schönert,Sebastian F. Schoppmann,U. Schwan,Thomas Schwetz,M. H. Shaevitz,D. Shrestha,J.L. Sida,V. Sinev,M.D. Skorokhvatov,E. Smith,Joshua Spitz,A. Stahl,I. Stancu,Matthew L Strait,A. Stüken,F. Suekane,S. Sukhotin,T. Sumiyoshi,Ying Sun,Z. Sun,Robert Svoboda,H. Tabata,N. Tamura,K. Terao,A. Tonazzo,M. Toups,H. H. Trinh Thi,C Veyssière,Sebastian Wagner,H. Watanabe,B. White,Christopher Wiebusch,Lindley Winslow,M. Worcester,Michael Wurm,E. Yanovitch,F. Yermia,K. Zbiri,V. Zimmer

Indication of Reactor ν̅ e Disappearance in the Double Chooz Experiment

2012

: 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 4.25 GW(th) reactors. The results were obtained from a single 10 m(3) 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 sin(2)2θ(13). Analyzing both the rate of the prompt positrons and their energy spectrum, we find sin(2)2θ(13)=0.086±0.041(stat)±0.030(syst), or, at 90% C.L., 0.017

Keywords:

Correction
Source
Cite
Save
Machine Reading By IdeaReader

References

1127

Citations