Matching the quark model to the 1/Nc expansion
We compute the coefficients of the effective mass operator of the 1/N c expansion for negative parity L=1 excited baryons using the Isgur-Karl model in order to compare the general approach, where the coefficients are obtained by fitting to data, with a specific constituent quark model calculation....
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| Formato: | Documento de conferencia publishedVersion |
| Lenguaje: | Inglés |
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2011
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_0094243X_v1374_n_p425_Pirjol |
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paperaa:paper_0094243X_v1374_n_p425_Pirjol2023-06-12T16:46:07Z Matching the quark model to the 1/Nc expansion AIP Conf. Proc. 2011;1374:425-428 Pirjol, D. Schat, C. 1/N expansion of QCD excited baryons Quark model We compute the coefficients of the effective mass operator of the 1/N c expansion for negative parity L=1 excited baryons using the Isgur-Karl model in order to compare the general approach, where the coefficients are obtained by fitting to data, with a specific constituent quark model calculation. We discuss the physics behind the fitted coefficients for the scalar part of the most general two-body quark-quark interaction. We find that both pion exchange and gluon exchange lead to the dominance of the same operator at the level of the effective mass operator, which is also observed from data. © 2011 American Institute of Physics. 2011 info:eu-repo/semantics/conferenceObject info:ar-repo/semantics/documento de conferencia info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0094243X_v1374_n_p425_Pirjol |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| language |
Inglés |
| orig_language_str_mv |
eng |
| topic |
1/N expansion of QCD excited baryons Quark model |
| spellingShingle |
1/N expansion of QCD excited baryons Quark model Pirjol, D. Schat, C. Matching the quark model to the 1/Nc expansion |
| topic_facet |
1/N expansion of QCD excited baryons Quark model |
| description |
We compute the coefficients of the effective mass operator of the 1/N c expansion for negative parity L=1 excited baryons using the Isgur-Karl model in order to compare the general approach, where the coefficients are obtained by fitting to data, with a specific constituent quark model calculation. We discuss the physics behind the fitted coefficients for the scalar part of the most general two-body quark-quark interaction. We find that both pion exchange and gluon exchange lead to the dominance of the same operator at the level of the effective mass operator, which is also observed from data. © 2011 American Institute of Physics. |
| format |
Documento de conferencia Documento de conferencia publishedVersion |
| author |
Pirjol, D. Schat, C. |
| author_facet |
Pirjol, D. Schat, C. |
| author_sort |
Pirjol, D. |
| title |
Matching the quark model to the 1/Nc expansion |
| title_short |
Matching the quark model to the 1/Nc expansion |
| title_full |
Matching the quark model to the 1/Nc expansion |
| title_fullStr |
Matching the quark model to the 1/Nc expansion |
| title_full_unstemmed |
Matching the quark model to the 1/Nc expansion |
| title_sort |
matching the quark model to the 1/nc expansion |
| publishDate |
2011 |
| url |
http://hdl.handle.net/20.500.12110/paper_0094243X_v1374_n_p425_Pirjol |
| work_keys_str_mv |
AT pirjold matchingthequarkmodeltothe1ncexpansion AT schatc matchingthequarkmodeltothe1ncexpansion |
| _version_ |
1769810329662914560 |