Predicted versus the observed zenith angle dependence of the total event rate above 6.5 MeV. Here cos

Distortion of the ^{8}B electron recoil energy spectrum.
The figure
shows the ratio, R, of
the measured number of electrons to the number expected on the basis of
the standard models.
Solutions are shown with the standard model fluxes of ^{8}B and
*hep* neutrinos (the approximately horizontal lines)
and with the standard *hep* flux multiplied
by factors of 8, 15,
and 30 (ratio increases at highest energies).
The calculated ratios are shown for three
different values of *m*^{2} and
with sin^{2} 2 = 0.79
in order to illustrate the range of
behaviors that result from choosing neutrino parameters.
Results similar to this viewgraph are obtained if
sin^{2} 2 is allowed to vary over
a representative range of the allowed global LMA solutions that are
consistent with the average measured event rates.
The experimental points show the SuperKamiokande results for 708 days of
observations. The bottom line is that the observed spectrum is
consistent with the standard model and the LMA predictions below about
13.5 MeV. Above 13.5 MeV, there is some indication of a larger
counting rate. On the LMA hypothesis, this must be accounted for by
contamination by a large *hep* contribution or by systematic or
statistical uncertainties in the experimental data.

The predicted seasonal dependence of the total
event rate with eccentricity removed.
The dependence of the -*e* scattering
rate in the SuperKamiokande detector upon the season of the year
is shown for a representative
range of LMA solutions with variable *m*^{2} and
sin^{2} 2 = 0.8.
In order to isolate the seasonal effect of neutrino oscillations, the
effect of the eccentricity of the earth's orbit has been removed.
The viewgraph refers to all events above 6.5 MeV. Very little
seasonal dependence (beyond that implied by the eccentricity of the earth's
orbit) is predicted by the LMA. This prediction is consistent with the
observations but the current error bars are huge on this scale, approximately
± 0.02.

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