Electron Electric Dipole Moment from Lepton Flavor Violation

Abstract

The general Minimal Supersymmetric Standard Model introduces new sources for Lepton Flavor Violation (LFV) as well as CP-violation. In this paper, we show that when both sources are present, the electric dipole moment of the electron, $d_e$, receives a contribution from the phase of the trilinear $A$-term of staus, ${\varphi }_{A_{\tau }}$. For ${\varphi }_{A_{\tau }}=\pi /2$, the value of $d_e$, depending on the ratios of the LFV mass elements, can range between zero and three orders of magnitude above the present bound. We show that the present bound on $d_e$ rules out a large portion of the CP-violating and the LFV parameter space which is consistent with the bounds on the LFV rare decays. We show that studying the correlation between $d_e$ and the P-odd asymmetry in $\tau \to e\gamma$ helps us to derive a more conclusive bound on ${\varphi }_{A_{\tau }}$ We also discuss the possibility of cancelation among the contributions of different CP-violating phases to $d_e$.

35 pages, 9 figures

References in corpus (5)

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• The Cosmological Parameters 2006
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• Linear programming analysis of the $R$-parity violation within EDM-constraints
• Electric dipole moments from flavoured CP violation in SUSY
• A reappraisal of two-loop contributions to the fermion electric dipole moments in R-parity violating supersymmetric models
• R-parity violating supersymmetric Barr-Zee type contributions to the fermion electric dipole moment with weak gauge boson exchange
• R-parity violating supersymmetric contributions to the P, CP-odd electron-nucleon interaction at the one-loop level
• Sfermion loop contribution to the two-loop level fermion electric dipole moment in R-parity violating supersymmetric models
• A Window on the CP-violating Phases of MSSM from Lepton Flavor Violating Processes
• R-parity violating two-loop level rainbowlike contribution to the fermion electric dipole moment