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Electroweak Baryogenesis in Non-minimal Composite Higgs Models

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arxiv 1110.2876 v1 pith:QBO4VBSW submitted 2011-10-13 hep-ph astro-ph.HE

Jose R. Espinosa , Ben Gripaios , Thomas Konstandin , Francesco Riva This is my paper · ORCID
classification hep-phastro-ph.HE
keywords higgsbaryogenesiscompositeelectroweakmodelsasymmetrybaryonmodel
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We address electroweak baryogenesis in the context of composite Higgs models, pointing out that modifications to the Higgs and top quark sectors can play an important role in generating the baryon asymmetry. Our main observation is that composite Higgs models that include a light, gauge singlet scalar in the spectrum [as in the model based on the symmetry breaking pattern SO(6)/SO(5)], provide all necessary ingredients for viable baryogenesis. In particular, the singlet leads to a strongly first-order electroweak phase transition and introduces new sources of CP violation in dimension-five operators involving the top quark. We discuss the amount of baryon asymmetry produced and the experimental constraints on the model.

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Cited by 6 Pith papers

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

  1. Complementarity of gravitational wave analyses and di-Higgs production in the exploration of the Electroweak Phase Transition dynamics in the RxSM

    hep-ph 2025-10 conditional novelty 6.0 of 10

    In the real singlet extension of the SM, strong first-order electroweak phase transitions split into singlet-driven transitions (loud in gravitational waves, quiet at colliders) and doublet-driven transitions (visible...

  2. Dark Sector Electroweak Baryogenesis In Light Of The Galactic Center Excess

    hep-ph 2025-08 conditional novelty 6.0 of 10

    A dark-sector electroweak baryogenesis model with a ~50 GeV fermionic dark matter candidate can simultaneously match the baryon asymmetry, the dark matter relic density, and (at ~2 sigma) the galactic center gamma-ray...

  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. Gamma-Rays and Gravitational Waves from Inelastic Higgs Portal Dark Matter

    hep-ph 2025-07 conditional novelty 4.0 of 10

    An inelastic complex-scalar Higgs portal dark matter model can evade direct detection, explain the Galactic Center gamma-ray excess, and produce a first-order electroweak phase transition with a gravitational wave sig...

  5. Detecting gravitational waves from cosmological phase transitions with LISA: an update

    astro-ph.CO 2019-10 unverdicted novelty 4.0 of 10

    Updated LISA detection prospects for gravitational waves from phase transitions are derived from state-of-the-art sound-wave simulations, with a new web tool PTPlot provided for parameter scans.

  6. The First Particles

    hep-ph 2025-01 unverdicted

    No new result: the paper is an expository review of reheating, electroweak baryogenesis, and leptogenesis in early universe cosmology.

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