Gauge-invariant three-boson vertices in the standard model and the static properties of the [ital W]

Journal Article · Mon Nov 01 00:00:00 EST 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.48.4255· OSTI ID:5927139

Papavassiliou, J; Philippides, K ^[1]

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1. Department of Physics, New York University, 4 Washington Place, New York, New York 10003 (United States)

We use the [ital S]-matrix pinch technique to derive to one-loop order gauge-independent [gamma][ital W][sup +][ital W[minus]] and [ital ZW][sup +][ital W[minus]] vertices in the context of the standard model, with all three incoming momenta off shell. We show that the [gamma][ital W][sup +][ital W[minus]] vertex so constructed is related to the gauge-independent [ital W] self-energy, derived by Degrassi and Sirlin, by a very simple QED-like Ward identity. The same results are obtained by the pinch technique applied directly to the process [ital e][sup +][ital e[minus]][r arrow][ital W][sup +][ital W[minus]]. Explicit calculations give rise to expressions for static properties of the [ital W] gauge bosons such as the magnetic dipole and electric quadrupole moments, which satisfy the crucial properties of infrared finiteness as well as gauge independence.

• OSTI ID: 5927139
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 48:9; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
STANDARD MODEL
VERTEX FUNCTIONS
PHOTONS
W MINUS BOSONS
W PLUS BOSONS
Z NEUTRAL BOSONS
MAGNETIC DIPOLE MOMENTS
QUADRUPOLE MOMENTS
ELECTRON-POSITRON INTERACTIONS
GAUGE INVARIANCE
WARD IDENTITY
BOSONS
DIPOLE MOMENTS
ELEMENTARY PARTICLES
FUNCTIONS
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
INVARIANCE PRINCIPLES
LEPTON-LEPTON INTERACTIONS
MAGNETIC MOMENTS
MASSLESS PARTICLES
MATHEMATICAL MODELS
PARTICLE INTERACTIONS
PARTICLE MODELS
UNIFIED GAUGE MODELS
662110* - General Theory of Particles & Fields- Theory of Fields & Strings- (1992-)
662390 - Electromagnetic Processes & Properties- (1992-)
662440 - Properties of Other Particles Including Hypothetical Particles- (1992-)