2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/185807Recent results from the NA49 experiment on the energy dependence of charged kaon production in central Pb+Pb collisions are presented. First results from the new data at 80 AGeV beam energy are compared with those from lower and higher energies. A difference in the energy dependence of the <K^{+}>/<π^{+}> and <K^{-}>/<π^{-}> ratios is observed. The <K^{+}>/<π^{+}> ratio shows a non-monotonic behaviour with a maximum near 40 AGeV.8 pages, 7 figures, proceedings of talk at SQM2001, Frankfurt, Germany, to appear in J. Phys. GNuclear Experimenttext