Combining first KamLAND results with solar neutrino data

Details Combining first KamLAND results with solar neutrino data Combining first KamLAND results with solar neutrino data

2002-12-09

arxiv.org/abs/hep-ph/0212129v2

Phys.Rev.D67:093003,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, LaTeX file using RevTEX4, 4 figures included. Added a section comparing Gaussian and Poisson statistical analyses of

Scientific paper

10.1103/PhysRevD.67.093003

We consider the impact of the recent KamLAND data on neutrino oscillations, the first terrestrial neutrino experiment that can probe the solar neutrino anomaly. By combining the first 145.1 days of KamLAND data with the full sample of latest solar neutrino data we find an enhanced rejection against non-LMA oscillations, allowed only at more than 4 sigma with respect to LMA. Furthermore, the new data have a strong impact in narrowing down the allowed range of Delta_m^2 inside the LMA region. In contrast, our global analysis indicates that the new data have little impact on the location of the best fit point. In particular the solar neutrino mixing remains significantly non-maximal (3 sigma).

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