Implications of the GALLEX Source Experiment for the Solar Neutrino Problem
Naoya Hata, Wick Haxton
Abstract
We argue that, prior to the recent GALLEX 51Cr source experiment, the excited state contributions to the 71Ga capture cross section for 51Cr and 7Be neutrinos were poorly constrained, despite forward-angle (p,n) measurements. We describe the origin of the uncertainties and estimate their extent. We explore the implications of the source experiment for solar neutrino capture in light of these uncertainties. A reanalysis of the 7Be and 8B flux constraints and MSW solutions of the solar neutrino puzzle is presented.
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