Strong /ital CP/ violation and the neutron electric dipole moment

Journal Article · Mon Aug 07 00:00:00 EDT 1989 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.63.589· OSTI ID:5808668

Liu, J; Geng, C Q; Ng, J N

We derive an identity that relates the fermion electric dipole moment from weak /ital CP/-violation effects to the strong /ital CP/ parameter /theta/. In the absence of Peccei-Quinn-type symmetries, we find that requiring /theta/ naturally small generally implies that, for a large class of models, the dominant contribution to the neutron electric dipole moment /ital d//sub /ital n// comes from strong /ital CP/ violation rather than directly from weak /ital CP/-violation effects.

• Research Organization: Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109 (US); TRIUMF Theory Group, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada V6T 2A3
• OSTI ID: 5808668
• Journal Information: Phys. Rev. Lett.; (United States), Vol. 63:6
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CP INVARIANCE
SYMMETRY BREAKING
NEUTRONS
ELECTRIC DIPOLE MOMENTS
AXIONS
CHIRAL SYMMETRY
HIGGS BOSONS
KOBAYASHI-MASKAWA MATRIX
MASS
MASS RENORMALIZATION
QUANTUM CHROMODYNAMICS
QUARKS
RADIATIVE CORRECTIONS
BARYONS
BOSONS
CORRECTIONS
DIPOLE MOMENTS
ELECTRIC MOMENTS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
GOLDSTONE BOSONS
HADRONS
INVARIANCE PRINCIPLES
MATRICES
NUCLEONS
POSTULATED PARTICLES
QUANTUM FIELD THEORY
RENORMALIZATION
SYMMETRY
UNIFIED-FIELD THEORIES
645300* - High Energy Physics- Particle Invariance Principles & Symmetries