Measurement of. alpha. sub s from hadron jets in e sup + e sup minus annihilation at radical s of 29 GeV

Journal Article · Fri Sep 01 04:00:00 EDT 1989 · Physical Review (Section) D: Particles and Fields; (USA)

DOI:https://doi.org/10.1103/PhysRevD.40.1385· OSTI ID:5507396

Ford, W T; Qi, N; Read, Jr, A L; Smith, J G ^[1]; Camporesi, T; De Sangro, R; Peruzzi, I; Piccolo, M ^[2]; Hurst, R B; Pyrlik, J; others, and

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1. Department of Physics, University of Colorado, Boulder, Colorado 80309 (US)
2. Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, Frascati, Italy

A study of the lateral development of jets of hadrons produced in electron-positron annihilation has been used to determine the strong coupling constant {alpha}{sub {ital s}}. Data were obtained with the MAC detector at the SLAC {ital e}{sup +}e{sup {minus}} storage ring PEP at {radical}{ital s} =29 GeV. Based on the parton calculations of Gottschalk and Shatz, a value for {alpha}{sub {ital s}} of 0.133{plus minus}0.005(stat){plus minus}0.009(syst) has been determined for string fragmentation, and 0.112{plus minus}0.008(stat){plus minus}0.007(syst) for an independent-jet model.

• OSTI ID: 5507396
• Journal Information: Physical Review (Section) D: Particles and Fields; (USA), Journal Name: Physical Review (Section) D: Particles and Fields; (USA) Vol. 40:5; ISSN 0556-2821; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BASIC INTERACTIONS
BOSONS
COMPOSITE MODELS
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
EXTENDED PARTICLE MODEL
FIELD THEORIES
FRAGMENTATION
GEV RANGE
GEV RANGE 10-100
GLUONS
HADRONS
INTERACTIONS
JET MODEL
LEPTON-LEPTON INTERACTIONS
MATHEMATICAL MODELS
MONTE CARLO METHOD
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PARTON MODEL
PEP STORAGE RINGS
PERTURBATION THEORY
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
STORAGE RINGS
STRING MODELS
STRONG-COUPLING MODEL