Search for Neutrino Oscillations at the Palo Verde Nuclear Reactors

Abstract

We report on the initial results from a measurement of the anti-neutrino 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 anti-neutrino flux agrees with that predicted in the absence of oscillations to better than 5%, excluding at 90% CL ${\bar{\nu }}_{\mathrm{e}}-{\bar{\nu }}_{\mathrm{x}}$ oscillations with $\Delta m^2>1.12\times 10^{-3}$ eV^2 for maximal mixing and ${\sin }^{2}2\theta >0.21$ for large $\Delta m^2$.

arXiv comment4 Pages, 3 figures

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• Initial Results from the CHOOZ Long Baseline Reactor Neutrino Oscillation Experiment
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