Beyond MSSM Baryogenesis - High Energy Physics - PhenomenologyReport as inadecuate

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Abstract: Taking the MSSM as an effective low-energy theory, with a cut-off scale of afew TeV, can make significant modifications to the predictions concerning theHiggs and stop sectors. We investigate the consequences of such a scenario forelectroweak baryogenesis. We find that the window for MSSM baryogenesis isextended and, most important, can be made significantly more natural.Specifically, it is possible to have one stop lighter than the top and theother significantly lighter than TeV simultaneously with the Higgs mass abovethe LEP bound. In addition, various aspects concerning CP violation areaffected. Most notably, it is possible to have dynamical phases in the bubblewalls at tree level, providing CP violating sources for Standard Modelfermions.

Author: Kfir Blum, Yosef Nir


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