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Top transport in electroweak baryogenesis
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In non-supersymmetric models of electroweak baryogenesis the top quark plays a crucial role. Its CP-violating source term can be calculated in the WKB approximation. We point out how to resolve certain discrepancies between computations starting from the Dirac equation and the Schwinger--Keldysh formalism. We also improve on the transport equations, keeping the W-scatterings at finite rate. We apply these results to a model with one Higgs doublet, augmented by dimension-6 operators, where our refinements lead to an increase in the baryon asymmetry by a factor of up to about 5.
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Forward citations
Cited by 2 Pith papers
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Baryon Asymmetry from Electroweak-Symmetric Domain Walls
Electroweak-symmetric domain walls produce the observed baryon asymmetry via CP-violating semiclassical forces, transport, sphalerons, and interference between the two wall faces in a singlet-extended Standard Model.
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Bounds from D/H on baryogenesis models
Deuterium-to-hydrogen measurements leave most electroweak baryogenesis parameter space unconstrained while imposing stronger exclusions on alternative baryogenesis models.
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