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Catalyzed Baryogenesis

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arxiv 2106.12589 v1 pith:VXSOIYR6 submitted 2021-06-23 hep-ph astro-ph.CO

Yang Bai , Joshua Berger , Mrunal Korwar , Nicholas Orlofsky This is my paper · ORCID
classification hep-phastro-ph.CO
keywords ballbaryonmodelasymmetryballsbaryogenesiscatalystcatalyzed
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A novel mechanism, "catalyzed baryogenesis," is proposed to explain the observed baryon asymmetry in our universe. In this mechanism, the motion of a ball-like catalyst provides the necessary out-of-equilibrium condition, its outer wall has CP-violating interactions with the Standard Model particles, and its interior has baryon number violating interactions. We use the electroweak-symmetric ball model as an example of such a catalyst. In this model, electroweak sphalerons inside the ball are active and convert baryons into leptons. The observed baryon number asymmetry can be produced for a light ball mass and a large ball radius. Due to direct detection constraints on relic balls, we consider a scenario in which the balls evaporate, leading to dark radiation at testable levels.

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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. DW-genesis: baryon number from domain wall network collapse

    hep-ph 2024-11 conditional novelty 7.0 of 10

    Collapsing axionic domain walls can produce the baryon asymmetry via spontaneous baryogenesis, with a maximum yield set by the annihilation temperature, but minimal post-inflationary realisations suffer a suppression ...

  2. Q-ball perturbations with more details: linear analysis vs lattice

    hep-ph 2024-12 conditional novelty 6.0 of 10

    Q-ball perturbation theory is shown to remain valid for wavepacket amplitudes below about 10^-2 of the Q-ball background, and the analysis is extended to two-field FLS Q-balls.

  3. Minimal Electroweak Baryogenesis via Domain Walls

    hep-ph 2024-12 conditional novelty 6.0 of 10

    Domain wall cores in the minimal Z2-symmetric singlet extension can restore electroweak symmetry and, while sweeping through space, could produce the matter-antimatter asymmetry in a parameter region far lighter and m...

  4. Electroweak Baryogenesis: Advances in Sphaleron Rate Calculations and Implications of Thermal Phase Transitions

    hep-ph 2026-07 conditional novelty 5.0 of 10

    Sphaleron rates can be computed gauge-invariantly in 3D thermal EFT, yielding a new baryon-washout criterion x = lambda3/g3^2 that replaces v_c/T_c > 1 for electroweak baryogenesis.

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