QCD studies of hadronic decays of Z{sup 0} bosons by SLD

Conference · Sun Nov 01 04:00:00 EST 1992

OSTI ID:10102454

Muller, D

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 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}{sub 0.009}{sup 0.0016}; the energy-energy correlation asymmetry gives {alpha}{sub s}(M{sub Z}) = 0.108 {plus_minus} 0.003 {plus_minus} 0.005 {plus_minus} {sub 0.003}{sup 0.008}.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 10102454
• Report Number(s): SLAC-PUB--5973; CONF-920837--17; ON: DE93004020
• Country of Publication: United States
• Language: English

Related Subjects

662380
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CORRELATIONS
COUPLING CONSTANTS
DECAYS OF INTERMEDIATE BOSONS
HADRONIC PARTICLE DECAY
QUANTUM CHROMODYNAMICS
STANFORD LINEAR COLLIDER
STANFORD LINEAR COLLIDER DETECTOR
Z NEUTRAL BOSONS