Eur. Phys. J. A (2010) 44: 445-454
https://doi.org/10.1140/epja/i2010-10957-3

Regular Article - Theoretical Physics

Dynamically generated resonances from the vector octet-baryon octet interaction

¹ Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigación de Paterna, Aptdo. 22085, 46071, Valencia, Spain
² Departament d’Estructura i Constituents de la Matèria and Institut de Ciències del Cosmos, Universitat de Barcelona, 08028, Barcelona, Spain

^* e-mail: ramos@ecm.ub.es

Received: 11 January 2010
Revised: 3 March 2010
Accepted: 11 March 2010
Published online: 25 April 2010

Abstract

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. We examine the scattering amplitudes and their poles, which can be associated to known J ^P = 1/2^-, 3/2^- baryon resonances, in some cases, or give predictions in other ones. The formalism employed produces doublets of degenerate J ^P = 1/2^-, 3/2^- states, a pattern which is observed experimentally in several cases. The findings of this work should also be useful to guide present experimental programs searching for new resonances, in particular in the strange sector where the current information is very poor.