Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1994-08-16
Phys.Lett.B341:38-45,1994
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages in RevTeX 3.0 plus 3 figures in uuencoded postscript files. Full postscript version available via anonymous ftp from
Scientific paper
10.1016/0370-2693(94)01204-0
The difficulties for non-standard solar models (NSSM) in resolving the solar neutrino problem are discussed stressing the incompatibility of the gallium--Kamiokande data, and of the gallium--chlorine data. We conclude that NSSM's cannot explain simultaneously the results of any two of the solar neutrino data (chlorine, Kamiokande and gallium). We address further the question whether the MSW solution exists for NSSM's (e.g. models with $^8$B neutrino flux much lower than the standard one and/or central temperature $T_c$ very different from $T_c^{\text{SSM}}$). We demonstrate that the MSW solution exists and is very stable relative to changes of $S_{17}$ ($S$-factor for $p$ + $^7$Be reaction) and $T_c$. In particular, $\Delta m^2$ is almost constant while $\sin^2 2\theta$ depends on the exact values of $S_{17}$ (or $^8$B-neutrino flux) and $T_c$.
Berezinsky Veniamin
Fiorentini Gianni
Lissia Marcello
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