2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/197654The centrality dependence of thermal parameters, characterizing the hadron multiplicities, is determined phenomenologically for lead-on-lead collisions at CERN-SPS for a beam energy of 158 AGeV. The strangeness equilibration factor shows a clear, approximately linear, increase with increasing centrality, while the freeze-out temperature and chemical potential remain constant.3 pages, 2 tables, 5 figuresNuclear TheoryHigh Energy Physics - Phenomenologytext