Study of nuclear effects in the inclusive neutrinoproduction of the \delta^{++}(1232) isobar

TL;DR

This study investigates the production of elta^{++}(1232) isobars in neutrino interactions with nuclei, revealing nuclear effects on spectra and no significant absorption, thus advancing understanding of nuclear effects in neutrino-induced particle production.

Contribution

First experimental analysis of inclusive elta^{++}(1232) production in neutrino-nuclear interactions, highlighting nuclear effects on spectra without evidence of absorption.

Findings

elta^{++}(1232) yield in nuclei is similar to that in nucleons.

Spectra are shifted to lower values in nuclei, indicating secondary intranuclear collisions.

No significant nuclear absorption of elta^{++}(1232) observed.

Abstract

For the first time, the inclusive neutrinoproduction of \Delta^{++}(1232) from nuclei is investigated. The total yield of $\Delta^{++}(1232) in neutrino-nuclear interaction is found to be \ < n\ >_{\nu A} = 0.080\pm0.011, being compatible with \ < n\ >_{\nu N} = 0.091\pm0.013 inferred for neutrino-nucleon interactions. It is shown that the \Delta^{++}(1232) inclusive spectra on variables x_F, z and the isobar total momentum for \nu A interactions are shifted toward lower values respective to those for \nu N interactions, that can be caused by secondary intranuclear collision processes. No idication on a significant nuclear absorption of \Delta^{++}(1232) leading to its disappearance is found.