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

Technical Report · Sat Oct 01 00:00:00 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: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 5293220
• Report Number(s): SLAC-PUB-3250; CONF-8308101-9; ON: DE84005327
• Resource Relation: Conference: International symposium on lepton and photon interactions at high energies, Ithaca, NY, USA, 4 Sep 1983; Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
• Country of Publication: United States
• Language: English

Related Subjects

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