The Contribution from Neutrino Yukawa Couplings to Lepton Electric Dipole Moments

Abstract

To explain the observed neutrino masses through the seesaw mechanism, a supersymmetric generalization of the Standard Model should include heavy right-handed neutrino supermultiplets. Then the neutrino Yukawa couplings can induce CP violation in the lepton sector. In this paper, we compute the contribution of these CP violating terms to lepton electric dipole moments. We introduce a new formalism that makes use of supersymmetry to expose the GIM cancellations. In the region of small tan beta, we find a different result from that given previously by Ellis, Hisano, Raidal, and Shimizu. We confirm the structure found by this group, but with a much smaller overall coefficient. In the region of large tan beta, we recompute the leading term that has been identified by Masina and confirm her result.We discuss the implications of these results for constraints on the neutrino Yukawa couplings.

34 pages, 9 figures; w. proof corrections for Phys. Rev. D, 3 refs. added

References in corpus (15)

• Cosmological Sign of Neutrino CP Violation
• Minimal Scenarios for Leptogenesis and CP Violation
• Soft Leptogenesis
• Leptogenesis from Supersymmetry Breaking
• Leptogenesis and the Violation of Lepton Number and CP at Low Energies
• Proof of principle for a high sensitivity search for the electric dipole moment of the electron using the metastable a(1)[^3Σ^+] state of PbO
• Leptogenesis-MNS Link in Unified Models with Natural Neutrino Mass Hierarchy
• Neutrino Physics in the Seesaw Model
• Super-conservative interpretation of muon g-2 results applied to supersymmetry
• Lepton Electric Dipole Moments from Heavy States Yukawa Couplings
• Lepton Electric Dipole Moments, Supersymmetric Seesaw and Leptogenesis Phase
• Lepton Flavor Violation and the Origin of the Seesaw Mechanism
• Interpreting the New Brookhaven g_mu - 2 Result
• Effects of the Neutrino B-term on Slepton Mixing and Electric Dipole Moments
• Leptogenesis and Low energy CP violation, a link

Cited by in corpus (34)

• Electric dipole moments as probes of new physics
• Flavour physics of leptons and dipole moments
• Anatomy and Phenomenology of FCNC and CPV Effects in SUSY Theories
• Leptonic CP violation
• EDM constraints on flavored CP-violating phases
• Impact of ${\theta }_{13}$ on Lepton Flavour Violating processes within SUSY Seesaw
• A Complete Analysis of "Flavored" Electric Dipole Moments in Supersymmetric Theories
• Seesaw mechanism in the sneutrino sector and its consequences
• Waiting for mu->eg from the MEG experiment
• Electric Dipole Moments of Charged Leptons with Sterile Fermions
• SUSEFLAV: program for supersymmetric mass spectra with seesaw mechanism and rare lepton flavor violating decays
• Electric Dipole Moments of Leptons in the Presence of Majorana Neutrinos
• Flavour violation in supersymmetric SO(10) unification with a type II seesaw mechanism
• The Seesaw with Many Right-Handed Neutrinos
• Patterns of flavor signals in supersymmetric models
• Running of Low-Energy Neutrino Masses, Mixing Angles and CP Violation
• CP Violation in the SUSY Seesaw: Leptogenesis and Low Energy
• Supersymmetric Grand Unification and Lepton Universality in K-> l νDecays
• On Power and Complementarity of the Experimental Constraints on Seesaw Models
• Running effects on neutrino parameters and l_i -> l_j gamma predictions in the triplet-extended MSSM
• Effects of the neutrino B-term on the Higgs mass parameters and electroweak symmetry breaking
• Fermion Mass Hierarchy and Electric Dipole Moments
• Observable Electron EDM and Leptogenesis
• A Predictive Seesaw Scenario for EDMs
• Can Measurements of Electric Dipole Moments Determine the Seesaw Parameters?
• Lepton Dipole Moments in Supersymmetric Low-Scale Seesaw Models
• The electron and neutron EDM from supersymmetric see-saw thresholds
• Reconstructing Seesaws
• Radiative corrections to $M_h$ from three generations of Majorana neutrinos and sneutrinos
• On Effects of the Large Neutrino B-Term on Low Energy Physics
• Laser in the axial electric field as a tool to search for P-, T- invariance violation
• Lepton electric dipole moments in supersymmetric type II seesaw model
• Edms in SUSY GUTS
• Seesaw mechanism and the baryon asymmetry