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Electroweak phase transition and baryogenesis in the nMSSM
KTH, School of Engineering Sciences (SCI), Theoretical Physics.
2006 (English)In: Nuclear Physics B, ISSN 0550-3213, E-ISSN 1873-1562, Vol. 757, no 1-2, 172-196 p.Article in journal (Refereed) Published
Abstract [en]

We analyze the nMSSM with CP violation in the singlet sector. We study the static and dynamical properties of the electroweak phase transition. We conclude that electroweak baryogenesis in this model is generic in the sense that if the present limits on the mass spectrum are applied, no severe additional tuning is required to obtain a strong first-order phase transition and to generate a sufficient baryon asymmetry. For this we determine the shape of the nucleating bubbles, including the profiles of CP-violating phases. The baryon asymmetry is calculated using the advanced transport theory to first and second order in gradient expansion presented recently. Still, first and second generation sfermions must be heavy to avoid large electric dipole moments.

Place, publisher, year, edition, pages
2006. Vol. 757, no 1-2, 172-196 p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-37585DOI: 10.1016/j.nuclphysb.2006.09.003ISI: 000242512800007Scopus ID: 2-s2.0-33750199823OAI: oai:DiVA.org:kth-37585DiVA: diva2:434329
Available from: 2011-08-15 Created: 2011-08-15 Last updated: 2017-12-08Bibliographically approved

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