1993/11/30 by Robert Garisto · 1 citation
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.49.4820
published as Phys.Rev.D49:4820-4825,1994 · 19pp plain LATEX, 1 fig (by EMAIL request), TRI-PP-93-86. (Some clarifying comments about renormalizability added--version to appear in Phys. Rev. D)
arxiv created 1994/01/28 · openalex publication_date 1994/05/01 · arxiv updated 2010/11/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
It is well known that supersymmetry (SUSY) gives neutron and electron electric dipole moments (dn and de) which are too large by about 103. If we assume a SUSY model cannot contain fine-tunings or large mass scales, then one must require that the SUSY-breaking mechanism give real soft breaking parameters, in which case the minimal SUSY model has no CP violation other than from the CKM matrix (aside from possible strong CP-violating effects). We show that in nonminimal SUSY models, a moderate amount of CP violation can be induced through one-loop corrections to the scalar potential, giving an effective phase of order 10^\ensuremath-3, and thus implying dn and de can be near their current experimental bounds naturally. This moderate amount of SUSY CP violation could also prove important for models of electroweak baryogenesis. We illustrate our results with a specific model.