GENIE implementation of IFIC Valencia model for QE-like 2p2h neutrino-nucleus cross section

Abstract

The model by Nieves, Ruiz-Simo, and Vicente-Vacas and their group (IFIC, Valencia, Spain) for 2p2h reactions that produce QE-like (no pion) final states has been implemented in GENIE. Since the model currently does not predict the kinematics of the outgoing hadrons, a simple two-nucleon system is grafted onto the model's prediction of isospin, energy transfer, and momentum transfer. These two nucleons are then given to the GENIE FSI models. This technical note is a guide to the kind of information available from this model and some limitations. There are several figures that illustrate the output of the model, and detailed discussion of the physics context for this model. Finally, any other authors' model (or variations of this one) that can be expressed as hadronic tensors for total and pn initial state will be easy to incorporate into this framework, or possibly be made available as a reweight to events generated with this model. The 2017 version of this document is updated to reflect the as-released GENIE 2.12.6 version of the code, which produces identical results to the development versions.

23 pages, 9 figures, technical note. Updated with scaling to full range of nuclei and GENIE 2.12.6

References in corpus (14)

• Deuterium target data for precision neutrino-nucleus cross sections
• Identification of nuclear effects in neutrino-carbon interactions at low three-momentum transfer
• Charged-current neutrino-nucleus reactions within the SuSAv2-MEC approach
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• Influence of short-range correlations in neutrino-nucleus scattering
• Energy reconstruction in the Long-Baseline Neutrino Experiment
• Seagull and pion-in-flight currents in neutrino-induced $1N$ and $2N$ knockout
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• Emission of neutron-proton and proton-proton pairs in neutrino scattering
• Angular distribution in two-particle emission induced by neutrinos and electrons
• The frozen nucleon approximation in two-particle two-hole response functions
• Density dependence of 2p-2h meson-exchange currents
• Neutrino-nucleus CCQE-like scattering

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