Vector meson-baryon dynamics in photoproduction reactions around 2 GeV
1 Departament d’Estructura i Constituents de la Materia and Institut de Ciències del Cosmos, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
2 Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigación de Paterna, Aptdo. 22085, 46071 Valencia, Spain
a e-mail: email@example.com
Published online: 26 November 2014
We investigate the role of vector mesons and coupled-channel unitarization on photoproduction reactions o_ the proton at energies around 2 GeV. We explain the sudden drop on the γp → K0Σ+ cross section, observed recently by the CBELSA/TAPS collaboration, by a delicate interference between amplitudes having K*Λ and K*Σ intermediate states modulated by the presence of a nearby N* resonance produced by our model, a feature that we have employed to predict its properties. We also show the importance of coupled-channel unitarization in the γp → K*0Σ+ reaction, measured recently by CBELSA/TAPS and CLAS with conflicting results.
© Owned by the authors, published by EDP Sciences, 2014
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