Comparing event generator predictions and ab initio calculations of ν−C12 neutral-current quasielastic scattering at 1 GeV

• DOI: 10.1103/physrevc.101.065502
• Publication Date: 2020-06-19T16:40:34Z
• Authors: G. B. King; K. Mahn; L. Pickering; N. Rocco
• Keywords: Event generator

Background: The measurement of neutrino oscillations and exotic physics searches are important parts the program in near future, with new state-of-the-art experiments planned within next decade. Future modern these fields will make use nuclear targets. Event generators (EGs) software used analysis oscillation experiments. EGs to predict kinematic observables for a range energies. These simulations simple models nucleon dynamics. As such, they may fail capture features more rigorous theoretical calculations.Purpose: This work compares EG performance theory calculations by comparing generated two frameworks. We provide common set definitions between experiment assess adequacy implementation simulations.Method: Neutral-current quasielastic (NCQE) scattering events neutrinos antineutrinos on $^{12}\mathrm{C}$ target simulated specific EG, NEUT, T2K its analysis. cross sections compared analytic from factorization scheme. compare NEUT different spectral functions: relativistic Fermi gas (RFG) correlated basis function (CBF) same For both models, we appearance distributions relevant experimental analyses.Results: peak section $d\ensuremath{\sigma}/(d\mathrm{\ensuremath{\Omega}}\phantom{\rule{0.16em}{0ex}}d\ensuremath{\omega})$ is consistent energy transfer, $\ensuremath{\omega}$, RFG CBF simulations. Qualitatively, shape distribution similar one obtained through calculations; however, there some discrepancies simulation.Conclusions: While model dynamics show overall features, still differences two. results demonstrate importance benchmarking so their implementations can be improved future