QCD studies of hadronic decays of Z[sup 0] bosons by SLD

Conference · Sat Feb 01 04:00:00 EST 1992 · AIP Conference Proceedings (American Institute of Physics); (United States)

OSTI ID:5726660

Muller, D ^[1]

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1. SLAC (United States)

Z[sup 0] bosons have been produced by collisions of longitudinally polarized electrons with unpolarized positrons at the SLAC Linear Collider and their decays have been recorded by the SLD experiment. We present preliminary QCD results based on the first 6000 such decays. We find good agreement between the inclusive properties of these data and the predictions of perturbative QCD plus fragmentation models. The strong coupling, [alpha][sub [ital s]], has been measured by three methods: jet rates yield [alpha][sub s](M[sub Z])=0.119[plus minus]0.002(stat.)[plus minus]0.003(exp. syst.)[plus minus]0.014(theor.); energy-energy correlations yield [alpha][sub s](M[sub Z])=0.121[plus minus]0.002[plus minus]0.004[plus minus][sup 0.016][sub 0.009]; and the energy-energy correlation asymmetry gives [alpha][sub s](M[sub Z])=0.108[plus minus]0.003[plus minus]0.005[plus minus][sup 0.008][sub 0.003].

• DOE Contract Number: AC03-76SF00515
• OSTI ID: 5726660
• Report Number(s): CONF-920837--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 272:1
• Country of Publication: United States
• Language: English

Related Subjects

662230 -- Quantum Chromodynamics-- (1992-)
662310 -- Weak & Electromagnetic Interactions of Leptons-- (1992-)
662380* -- Decays of Intermediate Bosons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATOR FACILITIES
ACCELERATORS
BEAMS
BOSONS
CALCULATION METHODS
COUPLING CONSTANTS
DECAY
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
FIELD THEORIES
FRAGMENTATION
HADRONIC PARTICLE DECAY
INCLUSIVE INTERACTIONS
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
JET MODEL
LEPTON-LEPTON INTERACTIONS
LINEAR ACCELERATORS
MATHEMATICAL MODELS
MONTE CARLO METHOD
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PERTURBATION THEORY
POLARIZED BEAMS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
STANFORD LINEAR COLLIDER
STANFORD LINEAR COLLIDER DETECTOR
STRONG-COUPLING MODEL
Z NEUTRAL BOSONS