2008/06/30 by Yingchuan Li, Stefano Profumo, Michael J. Ramsey-Musolf +1 · 64 citations
Physics and Astronomy · #Anomalous magnetic dipole moment #Atomic and Subatomic Physics Research #Baryogenesis #Chargino #Dark Matter and Cosmic Phenomena #Dipole #Electric dipole moment #Electroweak interaction #Gauge boson #Gauge theory #Gaugino #Higgs boson #Higgs sector #Higgsino #Minimal Supersymmetric Standard Model #Muon #Neutralino #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #hep-ph
paper · pdf · doi:10.1103/physrevd.78.075009
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 78(7) (American Physical Society) · 17 pages, 5 figures, significantly revised numerical results
arxiv created 2008/09/04 · openalex publication_date 2008/10/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We compute the complete set of Higgs-mediated chargino-neutralino two-loop contributions to the electric dipole moments of the electron and neutron in the minimal supersymmetric standard model (MSSM). We study the dependence of these contributions on the parameters that govern CP-violation in the MSSM gauge-gaugino-Higgs-Higgsino sector. We find that contributions mediated by the exchange of WH^\ifmmode±\else\textpm\fi and ZA0 pairs, where H^\ifmmode±\else\textpm\fi and A0 are the charged and CP-odd Higgs scalars, respectively, are comparable to or dominate over those mediated by the exchange of neutral gauge bosons and CP-even Higgs scalars. We also emphasize that the result of this complete set of diagrams is essential for the full quantitative study of a number of phenomenological issues, such as electric dipole moment searches and their implications for electroweak baryogenesis.