Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/12505
 Title: Size of the dark side of the solar neutrino parameter space Author: González García, Ma. ConcepciónPeña-Garay, C. Keywords: Astrofísica nuclearCol·lisions (Física nuclear)Partícules (Física nuclear)Estructura interna de la terraNeutrins solarsNuclear astrophysicsCollisions (Nuclear physics)Particles (Nuclear physics)Earth-Internal structureSolar neutrinos Issue Date: 2000 Publisher: The American Physical Society Abstract: We present an analysis of the MSW neutrino oscillation solutions of the solar neutrino problem in the framework of two-neutrino mixing in the enlarged parameter space $(\ensuremath{\Delta}{m}^{2},{\mathrm{tan}}^{2}\ensuremath{\theta})$ with $\ensuremath{\theta}\ensuremath{\in}(0,\ensuremath{\pi}/2).$ Recently, it was pointed out that the allowed region of parameters from a fit to the measured total rates can extend to values $\ensuremath{\theta}g~\ensuremath{\pi}/4$ (the so-called dark side'') when higher confidence levels are allowed. The purpose of this Rapid Communication is to reanalyze the problem, including all the solar neutrino data available, to discuss the dependence on the statistical criteria in the determination of the C.L. of the dark side'' and to extract the corresponding limits on the largest mixing allowed by the data. Our results show that when the Super-Kamiokande data on the zenith angle distribution of events and the spectrum information are included, the regions extend more into the second octant. Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevD.62.031301 It is part of: Physical Review D, 2000, vol. 62, núm. 2, p. 031301-1-031301-5 Related resource: http://dx.doi.org/10.1103/PhysRevD.62.031301 URI: http://hdl.handle.net/2445/12505 ISSN: 0556-2821 Appears in Collections: Articles publicats en revistes (Física Quàntica i Astrofísica)

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