A study of jet rates and measurement of [alpha][sub s] at the Z[sup 0] resonance

Conference · Wed Jan 01 04:00:00 EST 1992

OSTI ID:6887265

We present jet rates in hadronic decays of Z[sup 0] bosons measured by the SLD experiment at SLAC. The data are analyzed in terms of the JADE and recently proposed Durham algorithms, and are found to be in agreement with similar measurements by the LEP experiments, and also with the predictions of perturbative QCD and fragmentation Monte Carlo models of hadron production. After correction for hadronization effects the 2, 3 and 4-jet rates are well described by [Omicron]([alpha][sub s][sup 2]) perturbative QCD calculations. From fits to the differential 2-jet distribution the strong coupling [alpha][sub s](M[sub Z]) is measured to be [alpha][sub s](M[sub Z]) = 0.119 [plus minus] 0.002(stat.) [plus minus] 0.003(exp.syst.) [plus minus] 0.014(theory) (preliminary). The largest contribution to the error arises from the theoretical uncertainty in choosing the QCD renormalization scale.

• Research Organization: Tennessee Univ., Knoxville, TN (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FG05-91ER40627
• OSTI ID: 6887265
• Report Number(s): CONF-920837-39; ON: DE93005895
• Country of Publication: United States
• Language: English

Related Subjects

662380* -- Decays of Intermediate Bosons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CALCULATION METHODS
COUPLING CONSTANTS
DECAY
ELECTRONIC CIRCUITS
ELEMENTARY PARTICLES
ERRORS
FIELD THEORIES
HADRONIC PARTICLE DECAY
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
JET MODEL
MATHEMATICAL MODELS
MONTE CARLO METHOD
PARTICLE DECAY
PARTICLE MODELS
PULSE CIRCUITS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
STANFORD LINEAR COLLIDER DETECTOR
TRIGGER CIRCUITS
Z NEUTRAL BOSONS