2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/196065Through the present paper, the code gamgamZZ is presented, which may be used to calculate all possible observables related to the process $γγ\to ZZ$, in either the Standard Model (SM), or the minimal sypersymmetric standard model (MSSM) with real parameters.13 pages, 7 figures Revised according to the EPJC Referee suggestionsHigh Energy Physics - Phenomenologytext