Another Look at Just-So Solar Neutrino Oscillations

Abstract

We take another look at ``Just-So'' solar neutrino oscillations, characterizing them by the energy $E_{\pi /2}$ at which the distance-varying angle is $\pi /2$, instead of the usual $\Delta m^2$. The rising spectrum recently observed by SuperKamiokande is consistent with $E_{\pi /2}\sim$ 6-9 MeV and marginally with 48 MeV. The pp neutrinos must then be reduced to one-half the standard solar model prediction, and ${}^7$Be neutrinos must make up a significant part of the SAGE and GALLEX gallium signal. For $E_{\pi /2}$ close to 9 and 48 MeV, the ${}^7$Be neutrinos will also show a large seasonal variation, emphasizing the importance of direct measurements of the ${}^7$Be neutrinos.

3 pages, 3 figures; accepted as Phys Rev D, Rapid Communication. Name change, trivial typographical changes. Remove the incorrect statement that our results are inconsistent with model-independent analyses of solar neutrino capture rates

References in corpus (7)

• Measurements of the Solar Neutrino Flux from Super-Kamiokande's First 300 Days
• Where do we stand with solar neutrino oscillations?
• How Uncertain Are Solar Neutrino Predictions?
• The Solar Neutrino Puzzle: An Oscillation Solution with Maximal Neutrino Mixing
• Calibration of Super-Kamiokande Using an Electron Linac
• Do hep neutrinos affect the solar neutrino energy spectrum?
• "Just So" Neutrino Oscillations Are Back

Cited by in corpus (8)

• Measurement of the solar neutrino capture rate with gallium metal
• Shell Model in the Complex Energy Plane
• Bimaximal Mixing in an SO(10) Minimal Higgs Model
• SNO: Predictions for Ten Measurable Quantities
• Seasonal Variations of the 7Be Solar Neutrino Flux
• Vacuum oscillations and excess of high energy solar neutrino events observed in Superkamiokande
• A Mass Matrix for Atmospheric, Solar, and LSND Neutrino Oscillations
• Probing an extended region of Delta m^2 with rapidly oscillating 7Be solar neutrinos