Hadronization model tuning in genie v3

The GENIE neutrino Monte Carlo describes neutrino-induced hadronization with an effective model, known as AGKY, which is interfaced PYTHIA at high invariant mass. Only the low-mass AGKY model parameters were extracted from hadronic shower data FNAL 15 ft and BEBC experiments. In this paper, first tune on averaged charged multiplicity deuterium hydrogen bubble chamber experiments presented, a complete estimation of parameter uncertainties. A partial only highlights tensions between datasets.