CKM benchmarks for electron electric dipole moment experiments

2013/11/28 by Maxim Pospelov, Adam Ritz · 2 citations
Chemistry · Physics and Astronomy · #Advanced NMR Techniques and Applications #Atomic and Subatomic Physics Research #Atomic physics #Diatomic molecule #Dipole #Electric dipole moment #Electron #Molecule #Moment (physics) #Physics #Quantum mechanics #Quantum optics and atomic interactions #Spin (aerodynamics) #hep-ph #nucl-th #physics.atom-ph

paper · pdf · doi:10.1103/physrevd.89.056006

published as Phys. Rev. D 89, 056006 (2014) · 7 pages, 4 figures; v2: references added

arxiv created 2013/11/28 · openalex publication_date 2014/03/18 · arxiv updated 2014/03/26 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

All current experiments searching for an electron electric dipole moment (EDM) d_e are performed with atoms and diatomic molecules. Motivated by significant recent progress in searches for an EDM-type signal in diatomic molecules with an uncompensated electron spin, we provide an estimate for the expected signal in the Standard Model due to the Cabibbo-Kobayashi-Maskawa (CKM) phase. We find that the main contribution originates from the effective electron-nucleon operator ei\ensuremathγ₅eNN, induced by a combination of weak and electromagnetic interactions at O(G_F²\ensuremathα²), and not by the CKM-induced electron EDM itself. When the resulting atomic P,T-odd mixing is interpreted as an equivalent electron EDM, this estimate leads to the benchmark d_e^equiv(CKM)\ensuremath∼10^\ensuremath-38 ecm.

Citations

• DecayΣ+→pℓ+ℓ−within the standard model
• Electric dipole moments in the MSSM reloaded
• Commutator of the Quark Mass Matrices in the Standard Electroweak Model and a Measure of MaximalCPNonconservation
• Magnetic quadrupole moment of W-boson in Kobayashi-Maskawa model
• Electric dipole moments in the MSSM at large tanβ
• An Improved Experimental Limit on the Electric Dipole Moment of the Neutron
• CP-Violation in the Renormalizable Theory of Weak Interaction
• Higgs-mediated electric dipole moments in the MSSM: an application to baryogenesis and Higgs searches

Cited by

• The Electric Dipole Moment of the electron in the decoupling limit of the aligned Two-Higgs Doublet Model
• Low-energy phenomenology of scalar leptoquarks at one-loop accuracy