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Effects of pseudoscalar-baryon channels in the dynamically generated vector-baryon resonances

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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, 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.

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Authors and Affiliations

  1. Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigación de Paterna, Aptdo. 22085, 46071, Valencia, Spain

    E. J. Garzon & E. Oset

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  1. E. J. Garzon
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  2. E. Oset
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Correspondence to E. J. Garzon.

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Communicated by B.-Q. Ma

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Garzon, E.J., Oset, E. Effects of pseudoscalar-baryon channels in the dynamically generated vector-baryon resonances. Eur. Phys. J. A 48, 5 (2012). https://doi.org/10.1140/epja/i2012-12005-x

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  • DOI: https://doi.org/10.1140/epja/i2012-12005-x

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