2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/137875This talk gives a very short overview of some of the important physical phenomena observed at the Relativistic Heavy Ion Collider (RHIC). The emphasis is put on the multiplicities, hard probes and the properties of the initial state.8 pages, 5 figures, pdflatex. Talk presented at 12th International Conference on Elastic and Diffractive Scattering, in Hamburg, DESYHigh Energy Physics - Phenomenologytext