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Comparison of the particle flow in qq-barg and qq-bar. gamma. events in e/sup +/e/sup -/ annihilation

Journal Article · · Phys. Rev. Lett.; (United States)
; ; ; ; ; ; ; ; ;
We compare the particle flow in the event plane of three-jet qq-barg (quark-antiquark-gluon) events with the particle flow in radiative annihilation events qq-bar..gamma.. (quark-antiquark-photon) for similar kinematic configurations. In the angular region between quark and antiquark jet, we find a significant decrease in particle density for qq-barg as compared to qq-bar..gamma... This effect is predicted in QCD as a result of destructive interference between soft-gluon radiation from quark, antiquark, and hard gluon.
Research Organization:
Lawrence Berkeley Laboratory, Berkeley, California 94720
DOE Contract Number:
AC03-76SF00098; AA03-76SF00034; AC02-76ER03330
OSTI ID:
5085404
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 57:8; ISSN PRLTA
Country of Publication:
United States
Language:
English

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Related Subjects

645101* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties
645202 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BASIC INTERACTIONS
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
FIELD THEORIES
GAS TRACK DETECTORS
GLUONS
INTERACTIONS
JET MODEL
LEPTON-LEPTON INTERACTIONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MONTE CARLO METHOD
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PEP STORAGE RINGS
PHOTONS
POSTULATED PARTICLES
PROJECTION SPARK CHAMBERS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
RADIATION DETECTORS
SPARK CHAMBERS
STORAGE RINGS