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Title: Pion production model - connection between dynamics and quark models

Abstract

The authors discuss the difficulties in testing the hadron models by using the N{sup *} parameters extracted from the empirical amplitude analyses of the {pi}N and {gamma}N reaction data. As an alternative or perhaps a more advantageous approach, they present a Hamiltonian formulation that can relate the pion production dynamics and the constituent quark models of N{sup *} structure. The application of the approach in investigating the {Delta} and N{sup *}(S{sub 11}) excitations is reviewed. It is found that while the {Delta} excitation can be described satisfactory, the {pi}N scattering in S{sub 11} channel can not be described by the constituent quark models based on either the one-gluon-exchange or one-meson-exchange mechanisms. A phenomenological quark-quark potential has been constructed to reproduce the S{sub 11} amplitude.

Authors:
;
Publication Date:
Research Org.:
Argonne National Lab., IL (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
755883
Report Number(s):
ANL/PHY/CP-101920
TRN: US0003787
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: NSTAR2000 Workshop, Newport News, VA (US), 02/16/2000--02/19/2000; Other Information: PBD: 17 May 2000
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; QUARK MODEL; PION-NUCLEON INTERACTIONS; PHOTON-NUCLEON INTERACTIONS; PARTICLE STRUCTURE; TESTING; N*BARYONS; DELTA BARYONS

Citation Formats

Lee, T.-S. H., and Sato, T. Pion production model - connection between dynamics and quark models. United States: N. p., 2000. Web.
Lee, T.-S. H., & Sato, T. Pion production model - connection between dynamics and quark models. United States.
Lee, T.-S. H., and Sato, T. Wed . "Pion production model - connection between dynamics and quark models". United States. https://www.osti.gov/servlets/purl/755883.
@article{osti_755883,
title = {Pion production model - connection between dynamics and quark models},
author = {Lee, T.-S. H. and Sato, T.},
abstractNote = {The authors discuss the difficulties in testing the hadron models by using the N{sup *} parameters extracted from the empirical amplitude analyses of the {pi}N and {gamma}N reaction data. As an alternative or perhaps a more advantageous approach, they present a Hamiltonian formulation that can relate the pion production dynamics and the constituent quark models of N{sup *} structure. The application of the approach in investigating the {Delta} and N{sup *}(S{sub 11}) excitations is reviewed. It is found that while the {Delta} excitation can be described satisfactory, the {pi}N scattering in S{sub 11} channel can not be described by the constituent quark models based on either the one-gluon-exchange or one-meson-exchange mechanisms. A phenomenological quark-quark potential has been constructed to reproduce the S{sub 11} amplitude.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {5}
}

Conference:
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