The A - dependence of ρ 0 neutrinoproduction on nuclei SKAT Collaboration

The Adependence of ρ meson production in neutrino-induced reactions is investigated for the first time, using the data obtained with SKAT bubble chamber. The nuclear medium influence on the ρ total yield and inclusive distributions (on z = Eρ/ν and Feynman xF variables) is found to be approximately the same as for pions. It is shown, that these distributions, with increasing A, tend to shift toward smaller values of z and xF , thus indicating on an increasing role of secondary intranuclear interactions. The predictions of a simplified model incorporating the latter are found to be in qualitative agreement with experimental data.