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Zenith angle distributions at Super-Kamiokande and SNO and the solution of the solar neutrino problem

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Zenith angle distributions at Super-Kamiokande and SNO and the solution of the solar neutrino problem

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González García, Mª Concepción; Peña Garay, Carlos; Smirnov, Alexei Yu

Aquest document és un/a article, creat/da en: 2001

We have performed a detailed study of the zenith angle dependence of the regeneration factor and distributions of events at SNO and SK for different solutions of the solar neutrino problem. In particular, we discuss the oscillatory behavior and the synchronization effect in the distribution for the LMA solution, the parametric peak for the LOW solution, etc. A physical interpretation of the effects is given. We suggest a new binning of events which emphasizes the distinctive features of the zenith angle distributions for the different solutions. We also find the correlations between the integrated day-night asymmetry and the rates of events in different zenith angle bins. The study of these correlations strengthens the identification power of the analysis.

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