1998/10/17 by Hisakazu Minakata, Hiroshi Nunokawa
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #astro-ph #hep-ph
paper · pdf · doi:10.1103/physrevd.59.073004
published as Phys.Rev. D59 (1999) 073004 · RevTex file, 10 pages, 7 postscript figures
arxiv created 1998/10/17 · openalex publication_date 1999/03/08 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We perform an updated model-independent analysis using the latest solar neutrino data obtained by 37Cl and 71Ga radiochemical experiments, and most notably by a large water-Cherenkov detector SuperKamiokande with their 504 days of data taking. We confirm that the astrophysical solutions to the solar neutrino problem are extremely disfavored by the data and a low-temperature modification of the standard solar model is excluded by more than 5\ensuremathσ. We also propose a new way of illuminating the suppression pattern of various solar neutrino fluxes without invoking detailed flavor conversion mechanisms. It indicates that the strong suppression of 7Be neutrinos is no more true when the neutrino flavor conversion is taken into account.