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

journal contribution
posted on 2023-06-07, 20:41 authored by Stephan HuberStephan Huber, M G Schmidt
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.

History

Publication status

  • Published

Journal

Nuclear Physics B

ISSN

0550-3213

Publisher

Elsevier

Issue

1-2

Volume

606

Page range

183-230

Department affiliated with

  • Physics and Astronomy Publications

Notes

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.

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

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