Properties of Hadronization in e+e- -Annihilation

Research output: ThesisDoctoral Thesis (compilation)

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Abstract

Possible effects from colour interferences in strong interactions are discussed and investigated, and possible experimental signals in e+e- --> hadrons and e+e- --> W+W- --> hadrons are suggested. The observability of the signals depend on the relative probabilities of the occurrence of interferences, and can provide a measurement of the probabilities. This is important since these probabilities cannot be calculated within perturbative QCD. Models of colour interference are implemented into existing MC programs. An investigation to which extent the spin of initial quarks in e+e- --> Z --> qqbar can be transferred to hadrons formed in the hadronization process is made, and heavy quark fragmentation within the framework of the Lund string model is discussed. A computer program to calculate group theoretical (colour) factors of QCD Feynman diagrams is presented, and the production of deuteron in Upsilon decay and in e+e- --> qqbar events is studied.
Original languageEnglish
QualificationDoctor
Awarding Institution
  • Theoretical Particle Physics - Undergoing reorganization
Supervisors/Advisors
  • Gustafson, Gösta, Supervisor
Award date1996 Jun 5
Publisher
ISBN (Print)91-628-2114-8
Publication statusPublished - 1996 Jun 5

Bibliographical note

Defence details
Date: 1996-06-05
Time: 13:15
Place: Lecture Hall A at Department of Physics
External reviewer(s)
Name: Seymour, Michael
Title: Professor
Affiliation: Theory Department at CERN, Geneve
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Subject classification (UKÄ)

  • Subatomic Physics

Keywords

  • högenergi
  • colour interferences
  • strong interactions
  • QCD
  • heavy quark fragmentation
  • MC programs
  • Kosmisk strålning
  • cosmic rays
  • hadronization
  • High energy interactions
  • e+e- -annihilation
  • Fysicumarkivet A:1996:Häkkinen

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