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Baryogenesis in the two-Higgs doublet model

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posted on 2023-06-08, 07:51 authored by Lars Fromme, Stephan HuberStephan Huber, Michael Seniuch
We consider the generation of the baryon asymmetry in the two-Higgs doublet model. Investigating the thermal potential in the presence of CP violation, as relevant for baryogenesis, we find a strong first-order phase transition if the extra Higgs states are heavier than about 300 GeV. The mass of the lightest Higgs can be as large as about 200 GeV. We compute the bubble wall properties, including the profile of the relative complex phase between the two Higgs vevs. The baryon asymmetry is generated by top transport, which we treat in the WKB approximation. We find a baryon asymmetry consistent with observations. The neutron electric dipole moment is predicted to be larger than about 10(-27) ecm and can reach the current experimental bound. Low values of tan beta are favored.

History

Publication status

  • Published

File Version

  • Published version

Journal

Journal of High Energy Physics

ISSN

1126-6708

Issue

11

Volume

2006

Page range

038-038

Department affiliated with

  • Physics and Astronomy Publications

Notes

I was collaboration leader. The numerics was carried out by Fromme and Seniuch, while the conceptual parts of the computation were mostly done by myself. The paper shows in detail that electroweak baryogenesis works successfully in the Two Higgs Doublet Model, in contrast to earlier work on the subject.

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

First Open Access (FOA) Date

2016-03-22

First Compliant Deposit (FCD) Date

2016-11-10

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