https://doi.org/10.1140/epja/i2012-12005-x
Regular Article - Theoretical Physics
Effects of pseudoscalar-baryon channels in the dynamically generated vector-baryon resonances
Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigación de Paterna, Aptdo. 22085, 46071, Valencia, Spain
* e-mail: garzon@ific.uv.es
Received:
27
October
2011
Revised:
1
December
2011
Accepted:
20
December
2011
Published online:
23
January
2012
We study the interaction of vector mesons with the octet of stable baryons in the framework of the local hidden gauge formalism using a coupled-channels unitary approach, including also the pseudoscalar-baryon channels which couple to the same quantum numbers. We examine the scattering amplitudes and their poles, which can be associated to the known J P = 1/2−, 3/2− baryon resonances, and determine the role of the pseudoscalar-baryon channels, changing the width and eventually the mass of the resonances generated with only the basis of vector-baryon states.
© SIF, Springer-Verlag Berlin Heidelberg, 2012