Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2003-10-30
Physics
Nuclear Physics
Nuclear Theory
4 pages, no figures
Scientific paper
A model of neutrino oscillation experiments is constructed. The experiments incorporated are: solar neutrinos (Chlorine, Gallium, Super-K, and SNO), reactor neutrinos (Bugey and CHOOZ), beam stop neutrinos (LSND decay at rest and decay in flight), and atmospheric neutrinos. Utilizing this model and the standard three-neutrino mixing extension of the standard model, the data are analyzed. Solutions for the mixing angles and mass-squared differences are found to occur in pairs corresponding to the interchange $\Delta m^2_{12} \leftrightarrow \Delta m^2_{23}$. Two pairs of solutions are found that reasonably reproduce the data, including the LSND data. These solutions are $\theta_{12}\approx 0.5$, $\theta_{13}\approx 0.1$, $\theta_{23}\approx 0.7$, $\Delta m^2_{12} \approx 5\times 10^{-5}$ eV$^2$ and $\Delta m^2_{23} \approx 0.2$ eV$^2$ or 2.4 eV$^2$. Other statistically significant solutions are also found which produce negligible oscillations for the LSND experiments.
Ernst David J.
Latimer David C.
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