Measurement of the exclusive cross section sup 12 C(. nu. sub e , e sup minus ) sup 12 N(g. s. )
1990
The neutrino-induced nuclear transition {sup 12}C({nu}{sub {ital e}},{ital e}{sup {minus}}){sup 12}N (g.s.) has been observed with a 15-ton fine-grained tracking detector. The exclusive final state is identified by both an electron track and the positron decay of the {sup 12}N. From the observation of 181{plus minus}17 {sup 12}C({nu}{sub {ital e}},{ital e}{sup {minus}}){sup 12}N (g.s.) events with subsequent positron decays the flux-averaged cross section, equivalent to the cross section for 35.0-MeV neutrinos, is (1.05{plus minus}0.10(stat){plus minus}0.10(syst)){times}10{sup {minus}41} cm{sup 2}. This result is in good agreement with recent calculations.
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