Electric dipole moment constraints on minimal electroweak baryogenesis

2006/10/31 by Stephan J. Huber, Maxim Pospelov, Adam Ritz · 3 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #hep-ph

paper · pdf · doi:10.1103/physrevd.75.036006

published as Phys.Rev.D75:036006,2007 · 20 pages, 5 figures; v2: comments added and minor corrections to the results, published version

openalex publication_date 2007/02/12 · arxiv created 2007/03/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We study the simplest generic extension of the standard model which allows for conventional electroweak baryogenesis, through the addition of dimension-six operators in the Higgs sector. At least one such operator is required to be CP-odd, and we study the constraints on such a minimal setup, and related scenarios with minimal flavor violation, from the null results of searches for electric dipole moments (EDMs), utilizing the full set of two-loop contributions to the EDMs. The results indicate that the current bounds are stringent, particularly that of the recently updated neutron EDM, but fall short of ruling out these scenarios. The next generation of EDM experiments should be sufficiently sensitive to provide a conclusive test.

Citations

• Opening the window for electroweak baryogenesis
• An Improved Experimental Limit on the Electric Dipole Moment of the Neutron
• New Experimental Limit on the Electric Dipole Moment of the Neutron

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