Another Look at Just-So Solar Neutrino Oscillations

Details Another Look at Just-So Solar Neutrino Oscillations Another Look at Just-So Solar Neutrino Oscillations

1998-09-23

arxiv.org/abs/hep-ph/9809508v3

Phys.Rev.D60:011301,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, 3 figures; accepted as Phys Rev D, Rapid Communication. Name change, trivial typographical changes. Remove the incorr

Scientific paper

10.1103/PhysRevD.60.011301

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.

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