  Ces notes de cours visent a decrire de maniere pedagogique certaines
extensions populaires du modele standard des interactions fortes et
electrofaibless. Les sujets abordes comprennent le secteur de Higgs, le modele
symetrique gauche-droit, la grande unification et la supersymetrie. L'accent
est mis sur les consequences phenomenologiques et les methodes d'investigation.
  [These lecture notes are intended as a pedagogical introduction to several
popular extensions of the standard model of strong and electroweak
interactions. The topics include the Higgs sector, the left-right symmetric
model, grand unification and supersymmetry. Phenomenological consequences and
search procedures are emphasized.]
