Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-09-09
Phys.Lett.B583:149-156,2004
Physics
High Energy Physics
High Energy Physics - Phenomenology
8 pages + 5 figyres
Scientific paper
10.1016/j.physletb.2003.12.045
We point out that the recent data from the Sudbury Neutrino Observatory, together with other relevant measurements from solar and reactor neutrino experiments, convincingly show that the flavor transitions of solar neutrinos are affected by Mikheyev-Smirnov-Wolfenstein (MSW) effects. More precisely, one can safely reject the null hypothesis of no MSW interaction energy in matter, despite the fact that the interaction amplitude (formally treated as a free parameter) is still weakly constrained by the current phenomenology. Such a constraint can be improved, however, by future data from the KamLAND experiment. In the standard MSW case, we also perform an updated analysis of two-family active oscillations of solar and reactor neutrinos.
Fogli Gian Luigi
Lisi Eligio
Marrone Antonio
Palazzo Antonio
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