Exclusive Hadron Observables in Neutrino Induced $2p2h$ Multinucleon Knockout

TL;DR

This paper analyzes exclusive hadron observables in neutrino-induced 2p2h multinucleon knockout, comparing model predictions with event generator treatments and discussing their observability in neutrino detectors.

Contribution

It introduces variables from exclusive kinematics in the Valencia 2p2h model and assesses nuclear re-scattering effects and experimental observability.

Findings

Exclusive kinematic variables can distinguish 2p2h interactions.

Nuclear re-scattering significantly affects outgoing nucleon distributions.

Certain observables are feasible for detection in current and future neutrino experiments.

Abstract

We explore the combined lepton and hadron kinematic observables from the exclusive Valencia $2p2h$ model. We present variables of interest which are available due to the exclusive kinematics and compare them with the democratically distributed outgoing nucleon kinematics as currently treated in neutrino event generators. We also show the effect of nuclear re-scattering based on the NEUT semi classical cascade. We comment on the observability of these variables in current and future long baseline neutrino detectors.