Lepton dipole moments in supersymmetric low-scale seesaw models

Amon Ilakovac, Apostolos Pilaftsis, and Luka Popov
Phys. Rev. D 89, 015001 – Published 8 January 2014

Abstract

We study the anomalous magnetic and electric dipole moments of charged leptons in supersymmetric low-scale seesaw models with right-handed neutrino superfields. We consider a minimally extended framework of minimal supergravity, by assuming that CP violation originates from complex soft SUSY-breaking bilinear and trilinear couplings associated with the right-handed sneutrino sector. We present numerical estimates of the muon anomalous magnetic moment and the electron electric dipole moment, as functions of key model parameters, such as the Majorana mass scale mN and tanβ. In particular, we find that the contributions of the singlet heavy neutrinos and sneutrinos to the electron electric dipole moment are naturally small in this model, of order 10271028ecm, and can be probed in present and future experiments.

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  • Received 22 August 2013

DOI:https://doi.org/10.1103/PhysRevD.89.015001

© 2014 American Physical Society

Authors & Affiliations

Amon Ilakovac1, Apostolos Pilaftsis2,3, and Luka Popov1

  • 1Department of Physics, University of Zagreb, Bijenička cesta 32, P.O. Box 331, Zagreb, Croatia
  • 2Department of Physics, CERN, Theory Division, CH-1211 Geneva 23, Switzerland
  • 3Consortium for Fundamental Physics, School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom

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Vol. 89, Iss. 1 — 1 January 2014

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