Matching the quark model to the 1/Nc expansion

En:

AIP Conf. Proc. 2011;1374:425-428

Fecha:

2011

Formato:

application/pdf

Tipo de documento:

info:eu-repo/semantics/conferenceObject
info:ar-repo/semantics/documento de conferencia
info:eu-repo/semantics/publishedVersion

Descriptores:

1/N expansion of QCD -  excited baryons -  Quark model

Descripción:

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.

Identificador(es):

http://hdl.handle.net/20.500.12110/paper_0094243X_v1374_n_p425_Pirjol

Derechos:

info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/2.5/ar