Properties of Hadronization in e+e- -Annihilation

Jari Häkkinen

Properties of Hadronization in e+e- -Annihilation

Forskningsoutput: Avhandling › Doktorsavhandling (sammanläggning)

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Popular Abstract in Swedish
Möjliga effekter av colour-interferenser i stark växelverkan diskuteras och undersöks, möjliga experimentella signaler i e+e- --> hadroner och e+e- --> W+W- --> hadroner föreslås. Observerbarheten av signalerna beror på den relativa sannolikheten för interferens, och kan därigenom ge en möjlighet att mäta eventuell förekomst av interferenser. Denna mätning är viktig eftersom de relativa sannolikheterna inte kan beräknas inom störnings-QCD. Modeller för color-interferenser har implementerats i existerande MC-program. En undersökning av hur stor del av inital kvark spinet som överförs till hadroner som formas i hadroniseringsprocessen utförs, och tungkvarkfragmentering inom lundamodellen diskuteras. Ett datorprogram för beräkning av de gruppteoretiska (colour-) faktorerna för QCD feynman- diagram presenteras, samt deutronproduktion i Ypsilon sönderfall och i e+e- --> qqba händelser studeras.

Originalspråk	engelska
Kvalifikation	Doktor
Tilldelande institution
Handledare	Gustafson, Gösta, handledare
Tilldelningsdatum	1996 juni 5
Förlag	Lund University
ISBN (tryckt)	91-628-2114-8
Status	Published - 1996 juni 5

Bibliografisk information

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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Jari_Hakkinen_PhD_ThesisPublicerad version, 1,32 MB

6 Artikel i vetenskaplig tidskrift

bbˉ -fragmentation and Bpπ correlations
Häkkinen, J., 1997, I: Zeitschrift für Physik C Particles and Fields. 75, 1, s. 35-40
Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review
Colour: A computer program for QCD colour factor calculations
Häkkinen, J. & Kharraziha, H., 1997, I: Computer Physics Communications. 100, 3, s. 311-321
Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review
Colour Connections in e+e- annihilation
Friberg, C., Gustafson, G. & Häkkinen, J., 1997, I: Nuclear Physics, Section B. B490, s. 289-305
Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

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@phdthesis{412557f603a44f90b360fbb006e65b0d,

title = "Properties of Hadronization in e+e- -Annihilation",

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.",

keywords = "h{\"o}genergi, colour interferences, strong interactions, QCD, heavy quark fragmentation, MC programs, Kosmisk str{\aa}lning, cosmic rays, hadronization, High energy interactions, e+e- -annihilation, Fysicumarkivet A:1996:H{\"a}kkinen",

author = "Jari H{\"a}kkinen",

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 ---",

year = "1996",

month = jun,

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language = "English",

isbn = "91-628-2114-8",

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T1 - Properties of Hadronization in e+e- -Annihilation

AU - Häkkinen, Jari

N1 - 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 ---

PY - 1996/6/5

Y1 - 1996/6/5

N2 - 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.

AB - 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.

KW - högenergi

KW - colour interferences

KW - strong interactions

KW - QCD

KW - heavy quark fragmentation

KW - MC programs

KW - Kosmisk strålning

KW - cosmic rays

KW - hadronization

KW - High energy interactions

KW - e+e- -annihilation

KW - Fysicumarkivet A:1996:Häkkinen

M3 - Doctoral Thesis (compilation)

SN - 91-628-2114-8

PB - Lund University

ER -

Properties of Hadronization in e+e- -Annihilation

Sammanfattning

Bibliografisk information

Ämnesklassifikation (UKÄ)

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Forskningsoutput

bbˉ -fragmentation and Bpπ correlations

Colour: A computer program for QCD colour factor calculations

Colour Connections in e+e- annihilation

Citera det här