2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/202556This work provides an elementary introduction to the Higgs sector renormalisation within the Minimal Suppersymmetric Standard Model (MSSM) framework. The MSSM tree-level relation $m_h^2+m_H^2=m_A^2+m_Z^2$ is renormalised using the standard technique of direct computation of the relevant one-loop Feynman diagrams. The expected cancellation of ultraviolet divergences is explicitly checked and the well-known leading-log term is recovered.18 pages, 9 figures in eps formatHigh Energy Physics - Phenomenologytext