2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/173953The choice of a factorization scheme suitable for Monte Carlo simulations of NLO initial state parton showers is discussed in this contribution.Contribution to International Symposium on Multiparticle Dynamics, Hamburg, September 2008, 5 pages, 1 figureHigh Energy Physics - Phenomenologytext