Search for neutrino oscillations at the palo verde nuclear reactors
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).
Boehm
F
Division of Physics, Mathematics and Astronomy, Caltech, Pasadena, California 91125, USA.
Busenitz
J
Cook
B
Gratta
G
Henrikson
H
Kornis
J
Lawrence
D
Lee
KB
McKinny
K
Miller
L
Novikov
V
Piepke
A
Ritchie
B
Tracy
D
Vogel
P
Wang
YF
Wolf
J