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

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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 ... continued below

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Pages: 28

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Dorfan, J. October 1, 1983.

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Description

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.

Physical Description

Pages: 28

Notes

NTIS, PC A03/MF A01; 1.

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  • International symposium on lepton and photon interactions at high energies, Ithaca, NY, USA, 4 Sep 1983

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  • Other: DE84005327
  • Report No.: SLAC-PUB-3250
  • Report No.: CONF-8308101-9
  • Grant Number: AC03-76SF00515
  • DOI: 10.2172/5293220 | External Link
  • Office of Scientific & Technical Information Report Number: 5293220
  • Archival Resource Key: ark:/67531/metadc1070594

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Creation Date

  • October 1, 1983

Added to The UNT Digital Library

  • Feb. 4, 2018, 10:51 a.m.

Description Last Updated

  • March 29, 2018, 1:02 p.m.

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Dorfan, J. Fragmentation of quarks and gluons, tests of QCD in e/sup +/e/sup -/ annihilation, report, October 1, 1983; United States. (digital.library.unt.edu/ark:/67531/metadc1070594/: accessed April 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.