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Electromagnetic excitation of baryonic resonances up to 2 GeV in the constituent quark model; Elektromagnetische Anregung baryonischer Resonanzen bis 2 GeV im Constituent Quark Modell

Thesis/Dissertation:

Abstract

The present thesis describes the electromagnetic excitation of baryonic resonances up to 2 GeV in the constituent quark model. A given baryon spectrum is tested in exclusive two-particle reactions and cross sections as well as polarization observables are calculated. For this a formalism for the calculation of general polarization observables in exclusive two-particle reaction is presented and applied to the photoproduction of pseudoscalar mesons and the Compton scattering. Resonant and non-resonant contributions to the scattering amplitude are derived in the framework of a Feshbach projection formalism and by this calculated consistently with the baryon spectrum. For photoinduced reactions a multipole analysis is performed and characteristic angular distributions of the cross section and simple polarization observables are studied. The photon-baryon vertex function is derived from the simple photon-quark vertex and decomposed in transverse and longitudinal quark momenta. The magnetic quark moment is modified by addition of vector-dominance contributions, and the spin-orbit correction terms are calculated. The results for two differnt baryon spectra are shown and discussed. (HSI).
Authors:
Publication Date:
Dec 01, 1990
Product Type:
Thesis/Dissertation
Report Number:
BONN-TK-90-12
Reference Number:
SCA: 662330; 662240; PA: DEN-92:000396; SN: 92000645275
Resource Relation:
Other Information: TH: Diss. (Dr.rer.nat.)Thesis; PBD: Dec 1990
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; QUARK MODEL; PHOTON-NUCLEON INTERACTIONS; PHOTOPRODUCTION; PIONS; PHOTON-PROTON INTERACTIONS; COMPTON EFFECT; GEV RANGE 01-10; POLARIZATION-ASYMMETRY RATIO; EXCLUSIVE INTERACTIONS; MEV RANGE 100-1000; RESONANCE; SPIN ORIENTATION; SCATTERING AMPLITUDES; DIFFERENTIAL CROSS SECTIONS; MULTIPOLARITY; LONGITUDINAL MOMENTUM; TRANSVERSE MOMENTUM; L-S COUPLING; VERTEX FUNCTIONS; VECTOR DOMINANCE MODEL; MAGNETIC DIPOLE MOMENTS; QUARKS; CORRECTIONS; PHOTON-NEUTRON INTERACTIONS; DELTA-1232 BARYONS; NEUTRONS; PROTONS; PIONS MINUS; PIONS NEUTRAL; PIONS PLUS; PHOTONS; ANGULAR DISTRIBUTION; THEORETICAL DATA; POLARIZED BEAMS; POLARIZED PRODUCTS; POLARIZED ...; 662330; 662240; PHOTON AND CHARGED-LEPTON INTERACTIONS WITH HADRONS; MODELS FOR STRONG INTERACTIONS
OSTI ID:
10114345
Research Organizations:
Bonn Univ. (Germany). Inst. fuer Theoretische Kernphysik; Bonn Univ. (Germany). Mathematisch-Naturwissenschaftliche Fakultaet
Country of Origin:
Germany
Language:
German
Other Identifying Numbers:
Other: ON: DE92758977; TRN: DE9200396
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
DEN
Size:
385 p.
Announcement Date:
Jun 30, 2005

Thesis/Dissertation:

Citation Formats

Brink, W ten. Electromagnetic excitation of baryonic resonances up to 2 GeV in the constituent quark model; Elektromagnetische Anregung baryonischer Resonanzen bis 2 GeV im Constituent Quark Modell. Germany: N. p., 1990. Web.
Brink, W ten. Electromagnetic excitation of baryonic resonances up to 2 GeV in the constituent quark model; Elektromagnetische Anregung baryonischer Resonanzen bis 2 GeV im Constituent Quark Modell. Germany.
Brink, W ten. 1990. "Electromagnetic excitation of baryonic resonances up to 2 GeV in the constituent quark model; Elektromagnetische Anregung baryonischer Resonanzen bis 2 GeV im Constituent Quark Modell." Germany.
@misc{etde_10114345,
title = {Electromagnetic excitation of baryonic resonances up to 2 GeV in the constituent quark model; Elektromagnetische Anregung baryonischer Resonanzen bis 2 GeV im Constituent Quark Modell}
author = {Brink, W ten}
abstractNote = {The present thesis describes the electromagnetic excitation of baryonic resonances up to 2 GeV in the constituent quark model. A given baryon spectrum is tested in exclusive two-particle reactions and cross sections as well as polarization observables are calculated. For this a formalism for the calculation of general polarization observables in exclusive two-particle reaction is presented and applied to the photoproduction of pseudoscalar mesons and the Compton scattering. Resonant and non-resonant contributions to the scattering amplitude are derived in the framework of a Feshbach projection formalism and by this calculated consistently with the baryon spectrum. For photoinduced reactions a multipole analysis is performed and characteristic angular distributions of the cross section and simple polarization observables are studied. The photon-baryon vertex function is derived from the simple photon-quark vertex and decomposed in transverse and longitudinal quark momenta. The magnetic quark moment is modified by addition of vector-dominance contributions, and the spin-orbit correction terms are calculated. The results for two differnt baryon spectra are shown and discussed. (HSI).}
place = {Germany}
year = {1990}
month = {Dec}
}