11C measurement and CNO flux at Borexino

The Borexino experiment is specifically designed for measuring the solar 7 Be-v flux. Moreover, Borexino has the potential to extend the energy window of observation in order to probe solar neutrinos from the pep fusion process and from the CNO cycle, a region dominated by the in situ production of cosmogenic C-11. We investigated the possibility to reject C-11 events in Borexino by looking at the three-fold coincidence with the parent muon track and the subsequent neutron capture on protons. Furthermore, the three-fold coincidence has been applied to the Counting Test Facility data in order to evaluate the detection efficiency.