Speaker
Description
The reconstruction of neutrino energy from final state particles produced in neutrino-nucleus interaction is a crucial input for the precision measurement of neutrino oscillations in present (T2K, NOVA) and future (HyperKamiokande, DUNE) experiments.
While the neutrino energy reconstruction for Quasi-Elastic reactions has been historically made by detecting the outgoing charged lepton only, to improve the precision for Quasi Elastic itself and for higher energy processes, we need to detect other particles in the final state and perform an exclusive analysis. Additional nuclear effects play a major role in this new approach.
The Liège Intranuclear Cascade Model (INCL) provides a sophisticated nuclear model suited to simulating the nuclear effects (also called Final State Interactions) that link the initial neutrino vertex to the final hadronic state observed by the detector. A previous thesis work at CEA Paris-Saclay (2020-2023) combined the neutrino-nucleon vertex of the NuWro model with the Final State Interactions of INCL. The results showed net differences between the naive cascade model today used in neutrino experiments and INCL.
We now want to go one step further and have INCL treat the primary vertex itself, so that, once in Geant4, it will be possible to simulate neutrino-nuclear interactions, within a device, in a simple and consistent way, throughout the process. The expected energy range is up to a few GeV.
This work is expected to have a major impact in the capability to properly analyze the data of future oscillation experiments like HyperKamiokande and DUNE.