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Elsevier, Physics Letters B, 2-4(466), p. 415-430, 1999

DOI: 10.1016/s0370-2693(99)01072-2

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Limits on Neutrino Oscillations from the CHOOZ Experiment

Journal article published in 1999 by D. Véron, H. de Kerret, M. Apollonio, A. Baldini, C. Bemporad, V. Martemyanov, E. Caffau, F. Cei, Y. Déclais, B. D. Dieterle, B. Martemyanov, M. Grassi, A. N. Martemyanov, A. Etenko, J. George and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

We present new results based on the entire CHOOZ (The CHOOZ experiment is named after the new nuclear power station operated by Électricité de France (EdF) near the village of Chooz in the Ardennes region of France) data sample. We find (at 90% confidence level) no evidence for neutrino oscillations in the disappearance mode, for the parameter region given by approximately for maximum mixing, and sin22θ=0.10 for large δm2. 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 flux, the cross section, the number of target protons and the detector efficiencies.