Measuring the WWZ coupling at the Fermilab Tevatron

Journal Article · Sun Apr 01 04:00:00 EDT 1990 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.41.2113· OSTI ID:7002233

Hagiwara, K ^[1]; Woodside, J ^[2]; Zeppenfeld, D ^[3]

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1. Physics Department, University of Durham, Durham, England (GB)
2. Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078 (USA)
3. Physics Department, University of Wisconsin, Madison, Wisconsin 53706 (USA)

Hadroproduction of weak-boson pairs {ital W}{sup {plus minus}}{ital Z} and {ital W}{sup +}{ital W}{sup {minus}} is studied quantitatively at Fermilab Tevatron energies. Although the cross sections are expected to be small in the standard model, they grow substantially with nonstandard {ital WWZ} and {ital WW}{gamma} couplings even after careful consideration of unitarity constraints. With 4.7 pb{sup {minus}1} of data at hand, the Collider Detector at Fermilab Collaboration may already be sensitive to nonstandard {ital WWZ} couplings if {vert bar}{kappa}{sub {ital Z}}{minus}1{vert bar}{gt}1.3 or {vert bar}{lambda}{sub {ital Z}}{vert bar}{gt}1.0 (90% C.L.) from {ital Z} ({r arrow}{ital l}{sup +}{ital l}{sup {minus}}) plus dijet and ({r arrow}l{nu}) plus dijet event rates or from leptonic decays of both weak bosons. With 100 pb{sup {minus}1} of data, purely leptonic modes can be used to extend the sensitivity to {vert bar}{lambda}{sub {ital Z}}{vert bar}{gt}0.4 (90% C.L.), which is comparable and complementary to the {ital e}{sup +}{ital e}{sup {minus}}{r arrow}{ital W}{sup +}{ital W}{sup {minus}} experiments at the CERN collider LEP II.

• DOE Contract Number: AC02-76ER00881
• OSTI ID: 7002233
• Journal Information: Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 41:7; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

645203* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BASIC INTERACTIONS
BOSONS
BRANCHING RATIO
COUPLING CONSTANTS
CROSS SECTIONS
CYCLIC ACCELERATORS
DECAY
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
FERMILAB TEVATRON
FUNCTIONS
HADRON-HADRON INTERACTIONS
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
JET MODEL
LAGRANGIAN FUNCTION
LEP STORAGE RINGS
LEPTON-LEPTON INTERACTIONS
LEPTONIC DECAY
MATHEMATICAL MODELS
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
STANDARD MODEL
STORAGE RINGS
SYNCHROTRONS
UNIFIED GAUGE MODELS
W MINUS BOSONS
W PLUS BOSONS
WEAK INTERACTIONS
WEAK PARTICLE DECAY
Z NEUTRAL BOSONS