Collapsing axion-like domain walls generate the baryon asymmetry by acting as an effective chemical potential through coupling to the electroweak topological term, with the asymmetry produced via sphaleron processes.
Standard Model CP-violation and Baryon asymmetry
4 Pith papers cite this work. Polarity classification is still indexing.
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Pith papers citing it
abstract
Simply based on CP arguments, we argue against a Standard Model explanation of the baryon asymmetry of the universe in the presence of a first order phase transition. A CP-asymmetry is found in the reflection coefficients of quarks hitting the phase boundary created during the electroweak transition. The problem is analyzed both in an academic zero temperature case and in the realistic finite temperature one. The building blocks are similar in both cases: Kobayashi-Maskawa CP-violation, CP-even phases in the reflection coefficients of quarks, and physical transitions due to fermion self-energies. In both cases an effect is present at order $\alpha_W^2$ in rate. A standard GIM behaviour is found as intuitively expected. In the finite temperature case, a crucial role is played by the damping rate of quasi-particles in a hot plasma, which is a relevant scale together with $M_W$ and the temperature. The effect is many orders of magnitude below what observation requires, and indicates that non standard physics is indeed needed in the cosmological scenario.
years
2026 4verdicts
UNVERDICTED 4representative citing papers
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.
The mass ranges for the dark antibaryon ψ_DS are determined by deriving the B_d → Λ ψ_DS branching fraction via light-cone QCD sum rules and comparing it to BaBar and Belle experimental bounds.
LHCb measures CP-violating Wilson coefficients in B0 -> K*0 mu+ mu- with higher precision than before and finds results consistent with the Standard Model.
citing papers explorer
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Electroweak Baryogenesis from Collapsing Domain Walls
Collapsing axion-like domain walls generate the baryon asymmetry by acting as an effective chemical potential through coupling to the electroweak topological term, with the asymmetry produced via sphaleron processes.
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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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Mass of the dark antibaryon using $B_d\rightarrow \Lambda \psi_{DS}$ channel in light cone QCD
The mass ranges for the dark antibaryon ψ_DS are determined by deriving the B_d → Λ ψ_DS branching fraction via light-cone QCD sum rules and comparing it to BaBar and Belle experimental bounds.
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$C\!P$ violation analysis of local and nonlocal amplitudes in the $\overline{B}^0 \to \overline{K}^{*0}\mu^+\mu^-$ decay
LHCb measures CP-violating Wilson coefficients in B0 -> K*0 mu+ mu- with higher precision than before and finds results consistent with the Standard Model.