Electron and muon electric dipoles in supersymmetric scenarios

Details Electron and muon electric dipoles in supersymmetric scenarios Electron and muon electric dipoles in supersymmetric scenarios

2001-08-31

arxiv.org/abs/hep-ph/0108275v2

Nucl.Phys.B622:73-94,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 3 figures. v2: ref.s added, final version

Scientific paper

10.1016/S0550-3213(01)00607-1

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 d_mu/d_e = m_mu/m_e and obtain a d_mu as large as 10^{-22--23} e cm. In most cases d_mu is around 10^{-24--25} e cm and (d_mu/d_e)/(m_mu/m_e) 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.

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