Solar neutrino oscillation parameters after first KamLAND results

By G. Fogli, E. Lisi, A. Marrone, D. Montanino, A. Palazzo, A. M. Rotunno. Physical Review D, 2002

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We analyze the energy spectrum of reactor neutrino events recently observed in the Kamioka Liquid scintillator Anti-Neutrino Detector (KamLAND) and combine them with solar and terrestrial neutrino data, in the context of two- and three-family active neutrino oscillations. In the 2-neutrino case, we find that the solution to the solar neutrino problem at large mixing angle (LMA) is basically split into two sub-regions, that we denote as LMA-I and LMA-II. The LMA-I solution, characterized by lower values of the squared neutrino mass gap, is favored by the global data fit. This picture is not significantly modified in the 3-neutrino mixing case. A brief discussion is given about the discrimination of the LMA-I and LMA-II solutions with future KamLAND data. In both the 2- and 3-neutrino cases, we present a detailed analysis of the post-KamLAND bounds on the oscillation parameters.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/7a2f8b98f49a004f5beb1bdf2f9c673b4f1c0d99

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Explosion mechanism, neutrino burst and gravitational wave in core-collapse supernovae (2005, methodology): “Combined analysis based on all the data from various neutrino oscillation experiments has been done by many authors [111, 133, 241, 242, 332].”