Higgs-Higgsino-gaugino induced two loop electric dipole moments

Yingchuan Li, Stefano Profumo, and Michael Ramsey-Musolf
Phys. Rev. D 78, 075009 – Published 10 October 2008

Abstract

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± and ZA0 pairs, where H± 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.

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  • Received 9 July 2008

DOI:https://doi.org/10.1103/PhysRevD.78.075009

©2008 American Physical Society

Authors & Affiliations

Yingchuan Li1,*, Stefano Profumo2,†, and Michael Ramsey-Musolf1,3,‡

  • 1Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 USA
  • 2Department of Physics and Santa Cruz Institute for Particle Physics, University of California, 1156 High Street, Santa Cruz, California 95064, USA
  • 3Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125 USA

  • *yli@physics.umd.edu
  • profumo@scipp.ucsc.edu
  • mjrm@physics.wisc.edu

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Issue

Vol. 78, Iss. 7 — 1 October 2008

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