The definition of observables in neutrino cross section and oscillation experiments is a notoriously difficult problem due to incomplete information on the hadronic final state, and detector-dependent extrapolations required to connect with theoretically clean observables. The detection of final state nucleons provides an additional handle to improve neutrino energy reconstruction, isolate event classes, and validate models.
A goal of this brief workshop is to educate ourselves about capabilities for final state nucleons (protons and neutrons) at various experiments, including efficiencies, reconstruction challenges and observables being accessed by experiments.