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arXiv · 1508.05404

Two-Step Electroweak Baryogenesis

Satoru Inoue·Grigory Ovanesyan·Michael J. Ramsey-Musolf
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Abstract

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.

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Satoru Inoue, Grigory Ovanesyan, Michael J. Ramsey-Musolf. 2015-08-21. Two-Step Electroweak Baryogenesis. https://doi.org/10.1103/physrevd.93.015013

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