Statistical Significance of the Gallium Anomaly

Details Statistical Significance of the Gallium Anomaly Statistical Significance of the Gallium Anomaly

2010-06-16

arxiv.org/abs/1006.3244v3

Phys.Rev.C83:065504,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages; improved analysis with correlation of theoretical uncertainty

Scientific paper

10.1103/PhysRevC.83.065504

We calculate the statistical significance of the anomalous deficit of electron neutrinos measured in the radioactive source experiments of the GALLEX and SAGE solar neutrino detectors taking into account the uncertainty of the detection cross section. We found that the statistical significance of the anomaly is about 3.0 sigma. A fit of the data in terms of neutrino oscillations favors at about 2.7 sigma short-baseline electron neutrino disappearance with respect to the null hypothesis of no oscillations.

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