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- Title
Baryogenesis and leptogenesis from supercooled confinement.
- Authors
Dichtl, Maximilian; Nava, Jacopo; Pascoli, Silvia; Sala, Filippo
- Abstract
We propose a framework of baryogenesis and leptogenesis that relies on a supercooled confining phase transition (PT) in the early universe. The baryon or lepton asymmetry is sourced by decays of hadrons of the strong dynamics after the PT, and it is enhanced compared to the non-confining case, which was the only one explored so far. This widens the energy range of the PT, where the observed baryon asymmetry can be reproduced, down to the electroweak scale. The framework then becomes testable with gravity waves (GW) at LISA and the Einstein Telescope. We then study two explicit realisations: one of leptogenesis from composite sterile neutrinos that realises inverse see-saw; one of baryogenesis from composite scalars that is partly testable by existing colliders and flavour factories.
- Subjects
EINSTEIN, Albert, 1879-1955; GRAVITATIONAL wave detectors; PHASE transitions; GRAVITY waves; STERILE neutrinos; HADRON decay; ELECTROWEAK interactions; BARYONS; GRAVITATIONAL waves; NEUTRINOS
- Publication
Journal of High Energy Physics, 2024, Vol 2024, Issue 2, p1
- ISSN
1126-6708
- Publication type
Article
- DOI
10.1007/JHEP02(2024)059