2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/191800We discuss the relation between remnant fragmentation in inelastic high-energy hadronic interactions and muon production in extensive cosmic ray air showers. Using a newly developed tool, a simple and flexible hadronic event generator, we analyze the forward region of hadronic interactions. We show that measurements of the Feynman-x distribution in the beam fragmentation region at LHCf will be key to understanding muon production in air showers quantitatively.6 pages, 6 figuresHigh Energy Physics - Phenomenologytext