Final results of Borexino on CNO solar neutrinos

Although only one percent or so of the sun's luminosity comes from the Carbon-Nitrogen-Oxygen (CNO) reaction cycle, the Borexino Collaboration has managed to discriminate neutrinos arising from this process from the dominant pp cycle. In this new study, the collaboration uses a recently developed technique called the ``correlated integrated directionality'' (CID) method. This is an efficient way to separate solar neutrinos from background sources and further refine the detection of CNO cycle neutrinos through spectral analysis.