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Supersymmetric Electroweak Baryogenesis in the WKB approximation

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arxiv hep-ph/9708393 v2 pith:QNMSQS4A submitted 1997-08-18 hep-ph astro-ph

J. Cline , M. Joyce , K. Kainulainen This is my paper · ORCID
classification hep-phastro-ph
keywords baryonapproximationasymmetrydeltaelectroweakequationsphasesupersymmetric
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We calculate the baryon asymmetry generated at the electroweak phase transition in the minimal supersymmetric standard model, treating the particles in a WKB approximation in the bubble wall background. A set of diffusion equations for the particle species relevant to baryon generation, including source terms arising from the CP violation associated with the complex phase $\delta$ of the $\mu$ parameter, are derived from Boltzmann equations, and solved. The conclusion is that $\delta$ must be $\gsim 0.1$ to generate a baryon asymmetry consistent with nucleosynthesis. We compare our results to several other recent computations of the effect, arguing that some are overestimates.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Multi-step Strong First-Order Electroweak Phase Transitions in the Inverted Type-I 2HDM: Parameter Space, Gravitational Waves, and Collider Phenomenology

    hep-ph 2025-06 conditional novelty 7.0 of 10

    In the inverted Type-I 2HDM, one-step and two-step strong first-order electroweak phase transitions live in largely separate parameter regions, and LISA-detectable gravitational wave signals come predominantly from th...

  2. Revisiting the Electron EDM in the NMSSM

    hep-ph 2025-07 conditional novelty 6.0 of 10

    Adding 2HDM-type two-loop diagrams to the NMSSM electron EDM calculation tightens constraints on the CP-violating phase phi4 and changes the allowed parameter space for phi3, phi4, and phi5.

  3. Does the Electron EDM Preclude Electroweak Baryogenesis ?

    hep-ph 2024-04 unverdicted novelty 6.0 of 10

    First-order gradient CP-violating sources in EWBG quantum transport relax electron EDM bounds and increase viability compared to prior approximations in a model illustration.

  4. A Deep Dive into Baryon Asymmetry -- the C2HDM

    hep-ph 2026-06 unverdicted novelty 4.0 of 10

    New BSMPT implementation of baryon asymmetry computation using WKB transport equations with moment truncations and VEV profile solving, validated in the C2HDM with uncertainty and GW interplay analysis.

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