Fragmentation of quarks and gluons, tests of QCD in e/sup +/e/sup -/ annihilation

Technical Report · Sat Oct 01 04:00:00 EDT 1983

DOI:https://doi.org/10.2172/5293220· OSTI ID:5293220

Dorfan, J

This report covers the topics of fragmentation of quarks and gluons and tests of QCD in e/sup +/e/sup -/ annihilation and is a summary of a rapporteur talk given at the 1983 International Symposium on Lepton and Photon Interactions at High Energies. New data on the general characteristics of the e/sup +/e/sup -/ environment at the UPSILON and at PETRA and PEP are discussed. For the first time there is a lot of data on resonance production - eta, K*, rho, phi, ..xi... There is more data on c quark fragmentation from tagged D/sup *+-/ and direct observation of D/sup +/ and D/sup 0/. There are four experiments using high P/sub t/ leptons to measure the b quark fragmentation function - agreement amongst the experiments is very good. All these measurements can usefully be incorporated in the Monte Carlo simulation models. QCD tests are discussed. ..cap alpha../sub 3/ has been measured using the energy dependence of the total hadronic cross section. Unfortunately this method is not very precise. Other measurements of ..cap alpha../sub 3/ from shape analyses and energy-energy correlations have been done including the effects of all second order QCD diagrams. The results seem to depend both on the procedure and the models used to extract ..cap alpha../sub 3/. The evidence for differences in gluon and quark fragmentation are reviewed. There is now evidence that baryon conservation occurs locally in a jet rather than globally in an event. Multiplicity and jet mass correlations are presented as well as data on KNO scaling. 46 references.

• Research Organization: Stanford Linear Accelerator Center, CA (USA)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 5293220
• Report Number(s): SLAC-PUB-3250; CONF-8308101-9; ON: DE84005327
• Country of Publication: United States
• Language: English

Related Subjects

640101* -- Astrophysics & Cosmology-- Cosmic Radiation
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANNIHILATION
BARYONS
BASIC INTERACTIONS
BOSONS
CHARM PARTICLES
CHARMED MESON RESONANCES
D RESONANCES
D-2007 RESONANCES
DATA
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
FIELD THEORIES
FRAGMENTATION
GEV RANGE
GEV RANGE 10-100
GLUONS
HADRONS
INCLUSIVE INTERACTIONS
INFORMATION
INTERACTIONS
JET MODEL
KAONS
LEPTON-LEPTON INTERACTIONS
MASS SPECTRA
MATHEMATICAL MODELS
MESON RESONANCES
MESONS
NUCLEONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PIONS
POSTULATED PARTICLES
PROTONS
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
RESONANCE PARTICLES
SPECTRA
STRANGE PARTICLES