Measurement of the exclusive cross section 12C( nu e,e-)12N(g.s.).

摘要: The neutrino-induced nuclear transition $^{12}\mathrm{C}$(${\ensuremath{\nu}}_{\mathit{e}}$,${\mathit{e}}^{\mathrm{\ensuremath{-}}}$${)}^{12}$N (g.s.) has been observed with a 15-ton fine-grained tracking detector. exclusive final state is identified by both an electron track and the positron decay of $^{12}\mathrm{N}$. From observation 181\ifmmode\pm\else\textpm\fi{}17 events subsequent decays flux-averaged cross section, equivalent to section for 35.0-MeV neutrinos, [1.05\ifmmode\pm\else\textpm\fi{}0.10(stat)\ifmmode\pm\else\textpm\fi{}0.10(syst)]\ifmmode\times\else\texttimes\fi{}${10}^{\mathrm{\ensuremath{-}}41}$ ${\mathrm{cm}}^{2}$. This result in good agreement recent calculations.