Solar neutrino oscillation parameters after first KamLAND results
- G.L. Fogli(,)
- Bari U. and
- INFN, Bari
- E. Lisi(,)
- Bari U. and
- INFN, Bari
- A. Marrone(,)
- Bari U. and
- INFN, Bari
- ,
- A. Palazzo()
- Bari U. and
- INFN, Bari
Citations per year
Abstract:
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.- 26.65.+t
- 13.15.+g
- 14.60.Pq
- 91.35.-x
- neutrino: solar
- neutrino: oscillation
- antineutrino/e: particle source
- neutrino: flavor
- flavor: 2
- flavor: 3
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