Limits on Neutrino Oscillations from the CHOOZ Experiment
M. Apollonio,A. Baldini,C. Bemporad,E. Caffau,Fabrizio Cei,Y. Declais,H. de Kerret,B. D. Dieterle,A.V. Etenko,L. Foresti,J. George,G. Giannini,M. Grassi,Y. Kozlov,W. R. Kropp,D. Kryn,M. Laiman,C. E. Lane,B. Lefievre,I. N. Machulin,A. V. Martemyanov,V. P. Martemyanov,L. A. Mikaelyan,Donato Nicolo,M. Obolensky,R. Pazzi,G. Pieri,L. E. Price,S. Riley,R. Reeder,A. A. Sabelnikov,Giovanni Santin,M. D. Skorokhvatov,H. W. Sobel,J. Steele,R. Steinberg,S. V. Sukhotin,S. Tomshaw,D. Veron,V. N. Vyrodov +39 more
TLDR
In this paper, no evidence for neutrino oscillations in the anti-nue disappearance mode, for the parameter region given by approximately Delta m**2 > 7 x 10 −4 eV^2 for maximum mixing, and sin**2(2 theta) = 0.10 for large Delta m*2.Abstract:
We present new results based on the entire CHOOZ data sample. We find (at 90% confidence level) no evidence for neutrino oscillations in the anti_nue disappearance mode, for the parameter region given by approximately Delta m**2 > 7 x 10**-4 eV^2 for maximum mixing, and sin**2(2 theta) = 0.10 for large Delta m**2. Lower sensitivity results, based only on the comparison of the positron spectra from the two different-distance nuclear reactors, are also presented; these are independent of the absolute normalization of the anti_nue flux, the cross section, the number of target protons and the detector efficiencies.read more
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