2005/11/07 by V. Antonelli, Antonelli, V., E. Torrente-Lujan +2
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/0511071
Author attributions corrected
openalex publication_date 2005/11/07 · arxiv created 2005/11/11 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We present an updated analysis of all available solar and reactor neutrino data, emphasizing in particular the totality of the KamLAND (314d live time) results and including for the first time the solar SNO (391d live time, phase II NaCl-enhanced) spectrum data. As a novelty of the statistical analysis, we study the variability of the KamLand results with respect the use of diverse statistics. A new statistic, not used before is proposed. Moreover, in the analysis of the SNO spectrum a novel technique is used in order to include full correlated errors among bins. Combining all data, we obtain the following best-fit parameters: we determine individual neutrino mixing parameters and their errors Δm2= 8.2± 0.08× 10-5 \eV2, tan2θ= 0.50+0.12-0.07. The impact of these results is discussed. We also estimate the individual elements of the neutrino mass matrix. In the framework of three neutrino oscillations we obtain the mass matrix: M= eV \pmatrix1.0+ 4.0± 3.2 10-5 4.2± 3.2 10-5 -13.5± 14.0 10-5 \cr 4.2± 3.2 10-5 1.0+4.3± 3.5 10-5 -13.5± 14.5 10-5 \cr 13.5± 14.0 10-5 -13.5± 14.5 10-5 1.0+100.0± 30.0 10-5.