2015/08/21 by Satoru Inoue, Grigory Ovanesyan, Michael J. Ramsey-Musolf · 1 citation
Mathematics · Physics and Astronomy · #Asymmetry #Baryogenesis #Baryon asymmetry #CP violation #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dipole #Electric dipole moment #Electroweak interaction #Mathematics #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Realization (probability) #Standard Model (mathematical formulation) #Symmetry breaking #hep-ex #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevd.93.015013
published as Phys. Rev. D 93, 015013 (2016) · 20 pages, 11 figures
arxiv created 2015/08/21 · openalex publication_date 2016/01/22 · arxiv updated 2016/01/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We analyze electroweak baryogenesis during a two-step electroweak symmetry-breaking transition, wherein the baryon asymmetry is generated during the first step and preserved during the second. Focusing on the dynamics of CP violation required for asymmetry generation, we discuss general considerations for successful two-step baryogenesis. Using a concrete model realization, we illustrate in detail the viability of this scenario and the implications for present and future electric dipole moment (EDM) searches. We find that CP violation associated with a partially excluded sector may yield the observed baryon asymmetry while evading present and future EDM constraints.