Analysis of Neutrino oscillation data with the recent KamLAND results

Abstract

We present an updated analysis of all available solar and reactor neutrino data, emphasizing in particular the totality of the KamLAND results and including the SNO phase III spectrum data. In a two active-neutrino framework, we determine the solutions in the $\Delta m_{\odot }^2,{\tan }^2{\theta }_{\odot }$ parameter space compatible with experimental data. Combining all data, we obtain the following best-fit parameters: $\Delta m_{\odot }^2=8.17\ast 10^{-}5$, ${\tan }^2{\theta }_{\odot }=0.40$

Comments: 4 figures. Some references added