Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-10-16
Phys.Rev. D59 (1999) 073004
Physics
High Energy Physics
High Energy Physics - Phenomenology
RevTex file, 10 pages, 7 postscript figures
Scientific paper
10.1103/PhysRevD.59.073004
We perform an updated model-independent analysis using the latest solar neutrino data obtained by $^{37}$Cl and $^{71}$Ga 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 $\sigma$. We also propose a new way of illuminating the suppression pattern of various solar neutrino flux without invoking detailed flavor conversion mechanisms. It indicates that the strong suppression of $^7$Be neutrinos is no more true when the neutrino flavor conversion is taken into account.
Minakata Hisakazu
Nunokawa Hiroshi
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