Abstract
The electromagnetic properties of baryons are investigated in the framework of a relativized quark model. The model includes beyond the usual single quark transition ansatz relativistic effects due to the strong interaction and confinement forces between the quarks. Furthermore the center-of-mass motion of the three-quark system is separated off in a Lorentz-invariant way. All relativistic correction terms are obtained by expanding the corresponding relativistic expressions in powers of the quark velocity. In this way recoil effects on the electromagnetic interaction between the photon and the baryon could be explicitly studied. Using the harmonic oscillator wavefunctions with the configuration mixing from the Isgur-Karl model, the form factors of the nucleon and the electromagnetic transition amplitudes both for longitudinally and transversely polarized photons are calculated for the most important baryon resonances. An extension to baryons involving strange quarks is also considered. Comparisons are made with the results of the nonrelativistic quark model and with some other approaches. (orig.).
Citation Formats
Warns, M.
Electromagnetic properties of baryons in the constituent quark model; Elektromagnetische Eigenschaften von Baryonen im Constituent Quark Modell.
Germany: N. p.,
1992.
Web.
Warns, M.
Electromagnetic properties of baryons in the constituent quark model; Elektromagnetische Eigenschaften von Baryonen im Constituent Quark Modell.
Germany.
Warns, M.
1992.
"Electromagnetic properties of baryons in the constituent quark model; Elektromagnetische Eigenschaften von Baryonen im Constituent Quark Modell."
Germany.
@misc{etde_10145829,
title = {Electromagnetic properties of baryons in the constituent quark model; Elektromagnetische Eigenschaften von Baryonen im Constituent Quark Modell}
author = {Warns, M}
abstractNote = {The electromagnetic properties of baryons are investigated in the framework of a relativized quark model. The model includes beyond the usual single quark transition ansatz relativistic effects due to the strong interaction and confinement forces between the quarks. Furthermore the center-of-mass motion of the three-quark system is separated off in a Lorentz-invariant way. All relativistic correction terms are obtained by expanding the corresponding relativistic expressions in powers of the quark velocity. In this way recoil effects on the electromagnetic interaction between the photon and the baryon could be explicitly studied. Using the harmonic oscillator wavefunctions with the configuration mixing from the Isgur-Karl model, the form factors of the nucleon and the electromagnetic transition amplitudes both for longitudinally and transversely polarized photons are calculated for the most important baryon resonances. An extension to baryons involving strange quarks is also considered. Comparisons are made with the results of the nonrelativistic quark model and with some other approaches. (orig.).}
place = {Germany}
year = {1992}
month = {Jan}
}
title = {Electromagnetic properties of baryons in the constituent quark model; Elektromagnetische Eigenschaften von Baryonen im Constituent Quark Modell}
author = {Warns, M}
abstractNote = {The electromagnetic properties of baryons are investigated in the framework of a relativized quark model. The model includes beyond the usual single quark transition ansatz relativistic effects due to the strong interaction and confinement forces between the quarks. Furthermore the center-of-mass motion of the three-quark system is separated off in a Lorentz-invariant way. All relativistic correction terms are obtained by expanding the corresponding relativistic expressions in powers of the quark velocity. In this way recoil effects on the electromagnetic interaction between the photon and the baryon could be explicitly studied. Using the harmonic oscillator wavefunctions with the configuration mixing from the Isgur-Karl model, the form factors of the nucleon and the electromagnetic transition amplitudes both for longitudinally and transversely polarized photons are calculated for the most important baryon resonances. An extension to baryons involving strange quarks is also considered. Comparisons are made with the results of the nonrelativistic quark model and with some other approaches. (orig.).}
place = {Germany}
year = {1992}
month = {Jan}
}