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Limits on neutrino oscillations from the CHOOZ experiment

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.
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Contributor : Simone Lantz <>
Submitted on : Thursday, December 9, 1999 - 4:50:38 PM
Last modification on : Wednesday, September 23, 2020 - 4:31:54 AM

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M. Apollonio, A. Baldini, C. Bemporad, E. Caffau, F. Cei, et al.. Limits on neutrino oscillations from the CHOOZ experiment. Physics Letters B, Elsevier, 1999, 466, pp.415-430. ⟨10.1016/S0370-2693(99)01072-2⟩. ⟨in2p3-00003694⟩



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