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Aspects phénoménologiques de la brisure de supersymétrie

Abstract : In this thesis, we study some of the consequences of supersymmetry breaking and its mediation at low energy. First we focused on models in which supersymmetry is mediated through messengers. We succeed in building a model that was both stable and had a non-hierarchical spectrum. We also studied the coupling between messengers and grand unification fields, finding atypical spectra with light neutralino or gluino. Supersymmetry was also a way to address the hierarchy problem in the standard model, and we compared two types of models, one using horizontal gauge symmetries and the other using wave functions in extra-dimensionnal models. Finally, we worked on constrained superfields in order to develop a formalism for non-linear supersymmetry.
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Contributor : Jeanne Parmentier <>
Submitted on : Wednesday, May 9, 2012 - 7:57:20 PM
Last modification on : Monday, February 10, 2020 - 6:13:39 PM
Long-term archiving on: : Friday, August 10, 2012 - 2:30:15 AM


  • HAL Id : pastel-00695795, version 1



Jeanne Parmentier. Aspects phénoménologiques de la brisure de supersymétrie. Physique des Hautes Energies - Phénoménologie [hep-ph]. Ecole Polytechnique X, 2011. Français. ⟨pastel-00695795⟩



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