Physics
Scientific paper
Feb 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phrvd..43.1110b&link_type=abstract
Physical Review D (Particles and Fields), Volume 43, Issue 4, 15 February 1991, pp.1110-1128
Physics
73
Scientific paper
A deficit of solar neutrinos compared to the standard solar model prediction has been measured in both the Homestake and Kamiokande-II experiments, with quite different detectors. We analyze the parameter space for oscillations of two neutrinos to find regions that can explain both experiments. Long-wavelength vacuum oscillation solutions are found with δm2~=0.5-2.5×10-10 eV2 and sin22θ>~0.7. Matter-enhanced oscillation solutions are found for (i) nonadiabatic transitions having δm2θ2~=10-8 eV2 and δm2~=3×10-8-2×10-5 eV2, and (ii) adiabatic transitions having δm2~=10-7-10-4 eV2 with sin22θ>~0.5. The two-neutrino long-wavelength and matter-enhanced solutions predict 71Ga measurements in the ranges 50-80 and 5-115 solar-neutrino units (SNU), respectively, compared to 130 SNU without oscillations. We emphasize the distinctive features of each solution, including their predictions for future ν-e scattering experiments and detectable seasonal variations in the long-wavelength solutions. We also find the range of three-neutrino vacuum oscillation solutions.
Barger Vernon
Phillips J. N. R.
Whisnant Kerry
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