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Seasonal dependence in the solar neutrino flux
Holanda, P. C. de; Peña-Garay, C.; González García, Ma. Concepción; Valle, José Wagner Furtado
Universitat de Barcelona
Mikheyev-Smirnov-Wolfenstein (MSW) solutions of the solar neutrino problem predict a seasonal dependence of the zenith angle distribution of the event rates, due to the nonzero 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 sizable 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.
Astrofísica nuclear
Partícules (Física nuclear)
Nuclear astrophysics
Particles (Nuclear physics)
(c) The American Physical Society, 1999
The American Physical Society

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