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CP-violation for Electroweak Baryogenesis from Dynamical CKM Matrix
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We show that the CKM matrix can be the source of CP violation for electroweak baryogenesis if Yukawa couplings vary at the same time as the Higgs acquires its vacuum expectation value. This offers new avenues for explaining the baryon asymmetry of the universe. These ideas apply if the mechanism explaining the flavour structure of the Standard Model is connected to electroweak symmetry breaking. We compute the resulting baryon asymmetry for various low-scale flavour models and different configurations of the Yukawa coupling variation across the bubble wall, and show that it can naturally be of the right order.
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Forward citations
Cited by 3 Pith papers
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An ultralight scalar enables temporary dark decays of B mesons in the early universe via muon-induced mass shifts of a dark fermion, allowing mesogenesis while remaining compatible with modern flavor constraints.
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Mesogenesis through the Ephemeral Dark Decay of Beauty
An ultralight scalar temporarily lowers a dark fermion mass via muon thermal density, opening efficient B meson dark decays for baryon asymmetry generation that later shuts off to match flavor data.
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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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