Charged Lepton EDM with Extra Yukawa Couplings

Abstract

In a two Higgs doublet model with extra Yukawa couplings, we assess the new physics contributions to charged lepton electric dipole moment. We focus especially on muon (and tau) EDM where in the coming decade several experiments $-$ Muon g-2, J-PARC and PSI (and Belle II) $-$ will push sensitivities down by several orders of magnitude. With the working assumption that extra Yukawa couplings are analogous to SM ones in strength and taking exotic scalar masses in sub-TeV range, we find that $\mu$ and $\tau$ EDM can be enhanced to values larger than new physics scenarios that scale with lepton mass. The main effect comes from the flavor-conserving extra top coupling ${\rho }_{tt}$ via well-known two-loop diagrams. Deviating from our working assumption, if the muon $g-2$ anomaly arises from the one-loop diagram, driven by singly enhanced lepton flavor violating ${\rho }_{\tau \mu }$ coupling, it can also induce rather large muon EDM, accessible at upcoming experiments.

arXiv comment9 pages, 5 captioned figures; matches journal version

References in corpus (22)

• Theory and phenomenology of two-Higgs-doublet models
• Minimal Flavour Violation: an effective field theory approach
• The anomalous magnetic moment of the muon in the Standard Model
• Order of Magnitude Smaller Limit on the Electric Dipole Moment of the Electron
• Electric dipole moments as probes of new physics
• The CP-conserving two-Higgs-doublet model: the approach to the decoupling limit
• Flavor-phenomenology of two-Higgs-doublet models with generic Yukawa structure
• Electric Dipole Moments in Two-Higgs-Doublet Models
• CKM benchmarks for electron EDM experiments
• CPV Phenomenology of Flavor Conserving Two Higgs Doublet Models
• Gauge invariant Barr-Zee type contributions to fermionic EDMs in the two-Higgs doublet models
• Electroweak Baryogenesis driven by Extra Top Yukawa Couplings
• Measuring CP Violation in $h\to {\tau }^{+}{\tau }^{-}$ at Colliders
• Cancellation mechanism for the electron electric dipole moment connected with the baryon asymmetry of the Universe
• Electron EDM in the complex two-Higgs doublet model
• Approximate Alignment in Two Higgs Doublet Model with Extra Yukawa Couplings
• Electron Electric Dipole Moment from CP Violation in the Charged Higgs Sector
• Electron EDM and Muon anomalous magnetic moment in Two-Higgs-Doublet Models
• The electric dipole moment of the tau lepton revisited
• Muon Flavor Violation in Two Higgs Doublet Model with Extra Yukawa Couplings
• A large Muon Electric Dipole Moment from Flavor?
• Collider Prospects for Muon $g-2$ in General Two Higgs Doublet Model

Cited by in corpus (3)

• Probing New Physics in the Vector-like Lepton Model by Lepton Electric Dipole Moments
• A Large Muon EDM from Dark Matter
• Enhanced $B_q\to \ell {\ell }^{\prime }$ and $B\to (K,\pi )\ell {\ell }^{\prime }$ in light of $(g-2{)}_{\mu }$