Nuclear effects in neutrinoproduction of pions

TL;DR

This paper investigates nuclear effects in neutrino-induced pion production, highlighting the dominance of incoherent processes at moderate Bjorken x and providing a computational tool for evaluating related observables.

Contribution

It offers new insights into the dominance of incoherent contributions in neutrino pion production and provides a code for evaluating neutrino deeply virtual meson production observables.

Findings

Incoherent contribution dominates at moderate x_B in neutrino pion production.

Coherent contribution appears only at very small momentum transfer |t|.

The results are relevant for the MINERvA experiment's kinematics.

Abstract

In this paper we study nuclear effects in the neutrinoproduction of pions. We found that in a Bjorken kinematics, for moderate $x_{B}$ accessible in ongoing and forthcoming neutrino experiments the cross-section is dominated by the incoherent contribution; the coherent contribution becomes visible only for small $|t|\lesssim1/R_{A}^{2}$, which requires $x_{B}\lesssim0.1$. Our results could be relevant to the kinematics of the ongoing MINERvA experiment in ME configuration. We provide a code which could be used for evaluation of the $\nu$DVMP observables using different parametrizations of GPDs and different models of nuclear structure.