Electroweak baryogenesis: Concrete in a SUSY model with a gauge singlet

Huber, S J and Schmidt, M G (2001) Electroweak baryogenesis: Concrete in a SUSY model with a gauge singlet. Nuclear Physics B, 606 (1-2). pp. 183-230. ISSN 0550-3213

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Abstract

SUSY models with a gauge singlet easily allow for a strong first order electroweak phase transition (EWPT) if the vevs of the singlet and Higgs fields are of comparable size. We discuss the profile of the stationary expanding bubble wall and CP-violation in the effective potential, in particular transitional CP-violation inside the bubble wall during the EWPT. The dispersion relations for charginos contain CP-violating terms in the WKB approximation. These enter as source terms in the Boltzmann equations for the (particle-antiparticle) chemical potentials and fuel the creation of a baryon asymmetry through the weak sphaleron in the hot phase. This is worked out for concrete parameters.

Item Type: Article
Additional Information: The research topic was suggested by my PhD adviser M. Schmidt. I have carried out the project quite independently. The paper presents the first complete implementation of electroweak baryogenesis in a realistic model.
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: Stephan Huber
Date Deposited: 06 Feb 2012 18:36
Last Modified: 11 May 2012 15:09
URI: http://sro.sussex.ac.uk/id/eprint/17367
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