Seasonal Dependence in the Solar Neutrino Flux

Abstract

MSW solutions of the solar neutrino problem predict a seasonal dependence of the zenith angle distribution of the event rates, due to the non-zero latitude at the Super-Kamiokande site. We calculate this seasonal dependence and compare it with the expectations in the no-oscillation case as well as just-so scenario, in the light of the latest Super-Kamiokande 708-day data. The seasonal dependence can be sizeable in the large mixing angle MSW solution and would be correlated with the day-night effect. This may be used to discriminate between MSW and just-so scenarios and should be taken into account in refined fits of the data.

4 pages, latex, RevTeX, two postscript figures

References in corpus (3)

• Constraints on neutrino oscillation parameters from the measurement of day-night solar neutrino fluxes at Super-Kamiokande
• Seasonal and Energy Dependence of Solar Neutrino Vacuum Oscillations
• Enhancing the Seasonal Variation Effect in the Case of the Vacuum Oscillation Solution of the Solar Neutrino Problem

Cited by in corpus (15)

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• Phenomenology of Maximal and Near-Maximal Lepton Mixing
• Zenith angle distributions at Super-Kamiokande and SNO and the solution of the solar neutrino problem
• Testing solar neutrino MSW oscillations at low delta m^2 through time variations of event rates in GNO and BOREXINO
• Correlations of Solar Neutrino Observables for SNO
• Sterile Neutrinos in E_6 and a Natural Understanding of Vacuum Oscillation Solution to the Solar Neutrino Puzzle
• The atmospheric neutrino anomaly without maximal mixing?
• Neutrino Physics at the Turn of the Millenium
• The Earth Regeneration Effect of Solar Neutrinos: a Numerical Treatment with Three Active Neutrino Flavors