Search for Neutrino Oscillations at the Palo Verde Nuclear Reactors

F. Boehm, J. Busenitz, B. Cook, G. Gratta, H. Henrikson, János Kornis, David Lawrence, K. B. Lee, K. McKinny, L. S. Miller

Abstract

We report on the initial results from a measurement of the antineutrino flux and spectrum at a distance of about 800 m from the three reactors of the Palo Verde Nuclear Generating Station using a segmented gadolinium-loaded scintillation detector. We find that the antineutrino flux agrees with that predicted in the absence of oscillations excluding at 90% C.L. nu;(e)-nu;(x) oscillations with Deltam(2)>1.12x10(-3) eV(2) for maximal mixing and sin (2)2straight theta>0.21 for large Deltam(2). Our results support the conclusion that the atmospheric neutrino oscillations observed by Super-Kamiokande do not involve nu(e).

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