Baryogenesis in the Two-Higgs Doublet Model

By L. Fromme, S. Huber, M. Seniuch. 2006

250 citations recorded by the source corpus.

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.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/ec433835a82f66116cff33dc0fa85c75a9f99c09

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In Nuclear and High Energy Physics

1. T. Konstandin
2. J. No
3. C. Caprini
4. G. Servant
5. S. Huber
6. M. Hindmarsh
7. P. Schwaller
8. G. Nardini

Citations in the corpus

• Quantum transport and electroweak baryogenesis (2013, methodology): “) 2 + 1 2 λ3(Φ † 2Φ2)(Φ † 1Φ1) +λ4|Φ † 1Φ2| 2 + 1 2 λ5 (Φ† 1Φ2) 2 + h.c. . (104) The potential contains two complex (potentially CP-violating) couplings µ3eiα and λ5. Following the conventions of [57], we choose λ5 to be real such that αparametrizes CP violation in the scalar sector. As we will se”
• CosmoTransitions: Computing cosmological phase transition temperatures and bubble profiles with multiple fields (2011, background): “However, electroweak baryogensis can be saved in extensions to the standard model, many of which include extra dynamic scalar fields (such as two-Higgs-doublet models [24, 25, 26, 27, 28, 29, 30]).”
• ILC Higgs White Paper (2013, methodology): “The simplest viable model is the 2HDM [211], which provides additional CP violating phases and a sufficiently strong first order electroweak phase transition compatible with the 126 GeV SM-like Higgs boson due to the loop effect of the extra Higgs bosons.”
• Building and testing models with extended Higgs sectors (2017, unknown): “the conclusions they get do not rely on this particular example. A similar conclusion was reached in [480]. Starting from early 1990s, many authors investigated the issue of EWPT within generic 2HDMs [482, 483, 484, 485, 486, 487, 488] and within the Inert doublet model [489, 490, 491, 492, 493, 494”
• Science with the space-based interferometer eLISA. II: gravitational waves from cosmological phase transitions (2015, background): “These scenarios can accommodate electroweak baryogenesis [66] and can result in the generation of GWs at the electroweak PT (with preliminary studies having been carried out in [67]).”