2001/08/31 by Andrea Romanino, Alessandro Strumia, Алессандро Струмиа · 4 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.1016/s0550-3213(01)00607-1
published as Nucl.Phys.B622:73-94,2002 · 16 pages, 3 figures. v2: ref.s added, final version
arxiv created 2001/11/30 · openalex publication_date 2002/02/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study if a sizeable muon electric dipole can arise in supersymmetric frameworks able to account for the tight experimental bounds on sfermion masses, like an appropriate flavor symmetry, or like a flavor-blind mechanism of SUSY breaking (in presence of radiative corrections charchteristic of GUT models, or due to Yukawa couplings of neutrinos in see-saw models). In some cases it is possible to evade the naive scaling dmu/de = mmu/me and obtain a dmu as large as 10-22--23 e cm. In most cases dmu is around 10-24--25 e cm and (dmu/de)/(mmu/me) is only slightly different from one: this ratio contains interesting informations on the source of the dipoles and on the texture of the lepton Yukawa matrix. We also update GUT predictions for mu --> e gamma and related processes.