Etude phénoménologique du secteur des interactions électrofaibles dans les théories au-delà du Modèle Standard.

Abstract

In this thesis, we have studied the phenomenological study of theories beyond the standard model, and in particular the non-commutative standard model, in the electroweak interaction sector. For thus studied, we have many processes of particle physics: Production and disintegration of the Higgs boson, production of direct photons following the proton-antiproton annihilation, electronpositron annihilation in two photons. This essentially allowed us to analyze the behavior of the non-commutative cross section and to deduce new bonds on the non-commutativity parameter.