Abstract

Borexino is a liquid scintillator based detector designed to measure the flux of sub-MeV solar neutrinos. Along with the recently published measurement of the 7Be neutrino, Borexino also has the potential to detect neutrinos from the pep fusion process and the CNO cycle. The observation of pep and CNO neutrinos relies on the suppression of the dominant background from cosmogenic 11C. We have been able to effectively tag 11C decays using the three-fold coincidence between the parent muon and the capture of the associated neutron on protons. This procedure will allow us to make the first real time measurements of the pep and CNO solar neutrino flux.

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