Nuclear effects in neutrinoproduction of pions

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 $|t|\lesssim 1/R_A^2$, which requires $x_B\lesssim 0.1$. 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 $\hat{I}½$DVMP observables using different parametrizations of GPDs and different models of nuclear structure.

7 pages, 4 figures. Minor corrections in text. Accepted for publication in PRD