Particle production vs. energy: how do simulation results match experimental measurements?

This paper is about the available hadroproduction data to be used for the tuning of neutrino beamline simulations, going from conventional neutrino beams to superbeams and neutrino factories. Comparisons of data with existing Monte Carlo computations will be shown. Recent results from the HARP experiment at CERN PS will be summarized, including data useful for a better understanding of extended air showers and atmospheric neutrinos simulations.