High-temperature electroweak baryogenesis with composite Higgs

A bstract Electroweak Baryogenesis (EWBG) paired with the Composite Higgs (CH) scenario provides a well-motivated and testable framework for addressing the questions of the origin of the matter-antimatter asymmetry and the naturalness of the electroweak scale. The appeal of both concepts however exp...

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Bibliographic Details
Published inThe journal of high energy physics Vol. 2023; no. 12; pp. 138 - 28
Main Authors von Harling, Benedict, Matsedonskyi, Oleksii, Servant, Géraldine
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 19.12.2023
Springer Nature B.V
SpringerOpen
Subjects
Antimatter
Asymmetry
Baryo-and Leptogenesis
Broken symmetry
Classical and Quantum Gravitation
Compositeness
Cosmology
Cosmology of Theories BSM
Dilatons
Electroweak model
Elementary Particles
Gravitational waves
High energy physics
High temperature
Phase transitions
Phase Transitions in the Early Universe
Phenomenology
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Quarks
Regular Article - Theoretical Physics
Relativity Theory
String Theory
Symmetry
Temperature effects
Upper bounds
Cosmology of Theories BSM
Baryo-and Leptogenesis
Compositeness
Phase Transitions in the Early Universe
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Summary:A bstract Electroweak Baryogenesis (EWBG) paired with the Composite Higgs (CH) scenario provides a well-motivated and testable framework for addressing the questions of the origin of the matter-antimatter asymmetry and the naturalness of the electroweak scale. The appeal of both concepts however experiences increasing pressure from the experimental side, as no conclusive signs of the corresponding new physics have been observed. In this note we present a modification of the minimal CH EWBG model, where electroweak symmetry breaking persists to temperatures far above the usually obtained upper bound of ~ 100 GeV. This allows for an increase of the mass of the main actor of EWBG in this scenario — the dilaton. Such a modification results in relaxing the tension with experimental data, generally modifying the phenomenology, and pointing at collider searches for the heavy dilaton as the main direction for its future tests.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP12(2023)138