Solar Neutrino Oscillation Parameters after SNO Phase-III and SAGE Part-III

We analyse the recently published results from solar neutrino experiments SNO Phase-III and SAGE Part-III and show their constraints on solar neutrino oscillation parameters, especially for the mixing angle θ₁₂. Through a global analysis using all existing data from SK, SNO, Ga&Cl radiochemical experiments and long base line reactor experiment KamLAND, we obtain the parameters Δm²₁₂=7.684^+0.212_-0.208×10^-5,eV², tan²θ₁₂=0.440^+0.059_-0.057. We also find that the discrepancy between the KamLAND and solar neutrino results can be reduced by choosing a small non-zero value for the mixing angle θ₁₃.