Effects of the nuclear correlations on the neutrino-oxygen interactions
Institut de Physique nucléaire de Lyon, IN2P3-CNRS et Université Claude Bernard, 43 Bd du 11 Novembre 1918, F-69622 Villeurbanne Cedex, France
Received: 15 January 1999 Communicated by P. Schuck
We perform a calculation of the absolute charged current neutrino-oxygen events rates relevant in the atmospheric neutrino experiments. The inclusive reaction cross-section is split into exclusive channels, which are classified according to the number of Cerenkov rings they produce. The model includes the effects of residual interaction in a RPA scheme with both nucleon-hole and Delta-hole excited states and the effects of (np-nh) excitations (n=2,3). Our result is that although the flavor ratio remains almost unaffected by the nuclear effects considered here and often neglected in the Monte-Carlo simulations, the absolute events rates are subject to important modifications.
13.15.+g Neutrino interactions - 14.40.-n Mesons - 24.30.Gd Other resonances