Spin effects and electromagnetic properties of W and Z sup 0 -bosons in reactions. gamma. e +- r arrow W sup +. nu. , Z sup 0 e sup +

Conference · Mon May 01 04:00:00 EDT 1989 · AIP Conference Proceedings (American Institute of Physics) Conference Proceedings; (USA)

OSTI ID:5249418

Kerimov, B K; Buras, P G ^[1]

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1. Department of Theoretical Physics, Moscow State University, Moscow, II7234, U.S.S.R. (SU)

The processes of intermediate {ital W}{sup {plus minus}} and {ital Z}{sup 0}-bosons production are considered in polarized beams of photon-electron collisions: {gamma}+{ital e}{sup {plus minus}}{r arrow} {ital Z}{sup 0}+{ital e}{sup {plus minus}} (a), {gamma}+{ital e}{sup {plus minus}}{r arrow}{ital W}{sup {plus minus}}+{nu}{sub {ital e}} (b). The influence of anomalous magnetic dipole (H{sub {ital W}}) and electric quadrupole ({lambda}{sub {ital W}}) moments of {ital W}-boson on the characteristics of reactions (b) is researched, and the CP-violation effects in reaction (a) caused by the existence of possible anomalous magnetic dipole (H{sub {ital Z}}) and electric quadrupole ({lambda}{sub {ital Z}}) moments of {ital Z}{sup 0}-boson are exposed. It has been shown, in particular, that if the colliding electron (positron) and photon beams have the same helicity, then the cross-section of process (a) is very sensitive to changes of electromagnetic parameters H{sub {ital Z}} and {lambda}{sub {ital Z}} of vertex {ital ZZ}{gamma} when energy {radical}{ital S}{r arrow}{ital m}{sub {ital Z}}. The measuring of right-left asymmetry of reaction (b) cross-sections by photon helicities near the production threshold of {ital W}-boson would allow us to evaluate the values of electro-magnetic parameters H{sub {ital W}} and {lambda}{sub {ital W}} of vertex {ital WW}{gamma}, when considerable deviation from standard electroweak model can be observed.

• OSTI ID: 5249418
• Report Number(s): CONF-880983--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics) Conference Proceedings; (USA) Journal Volume: 187:1
• Country of Publication: United States
• Language: English

Related Subjects

645201* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- General & Scattering Theory
645300 -- High Energy Physics-- Particle Invariance Principles & Symmetries
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR MOMENTUM
BASIC INTERACTIONS
BEAMS
BOSONS
CP INVARIANCE
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FIELD THEORIES
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
INVARIANCE PRINCIPLES
MAGNETIC MOMENTS
MATHEMATICAL MODELS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PHOTON-ELECTRON INTERACTIONS
PHOTON-LEPTON INTERACTIONS
PHYSICAL PROPERTIES
POLARIZED BEAMS
SPIN
TEV RANGE
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
W MINUS BOSONS
W PLUS BOSONS
WEINBERG-SALAM GAUGE MODEL
Z NEUTRAL BOSONS