Can CP violation arise solely from the gauge sector

Journal Article · Fri May 01 00:00:00 EDT 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.45.3186· OSTI ID:7114125

London, D ^[1]

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1. Laboratoire de Physique Nucleaire, Universite de Montreal, Case Postale 6128, Montreal, Quebec, H3C3J7 (Canada)

I consider the possibility that the Cabibbo-Kobayashi-Maskawa matrix is real, and that {vert bar}{epsilon}{vert bar}, the {ital CP}-violating parameter in the kaon system, is due indirectly to the existence of anomalous three-gauge-boson couplings which violate {ital CP}. Through these anomalous couplings, {ital CP}-violating interaictions of the {ital W} and quarks can be generated at one loop. The imaginary part of the {ital K}{sup 0-}{ital K{bar 0}} mixing box diagram is calculated using these effective {ital CP}-violating {ital W}-quark couplings. (This is a subset of all two-loop contributions to {vert bar}{epsilon}{vert bar}.) It is found that the values of the anomalous three-gauge-boson couplings required to reproduce the measured value of {vert bar}{epsilon}{vert bar} exceed their unitarity bounds. Thus, this scheme fails, offering compelling evidence that {ital CP} violation cannot arise solely from the gauge sector.

• OSTI ID: 7114125
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 45:9; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
STANDARD MODEL
CP INVARIANCE
ANTIKAONS NEUTRAL
COUPLING CONSTANTS
ELECTRIC DIPOLE MOMENTS
GAUGE INVARIANCE
KAONS NEUTRAL
KOBAYASHI-MASKAWA MATRIX
LORENTZ INVARIANCE
PARTICLE INTERACTIONS
QUARKS
UNITARITY
W PLUS BOSONS
ANTIKAONS
ANTIMATTER
ANTIPARTICLES
BOSONS
DIPOLE MOMENTS
ELECTRIC MOMENTS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HADRONS
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
INVARIANCE PRINCIPLES
KAONS
MATHEMATICAL MODELS
MATRICES
MATTER
MESONS
PARTICLE MODELS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
STRANGE MESONS
STRANGE PARTICLES
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
662120* - General Theory of Particles & Fields- Symmetry
Conservation Laws
Currents & Their Properties- (1992-)
662340 - Hadron Interactions- (1992-)