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arxiv: 0905.0973 · v1 · pith:QENHY5ATnew · submitted 2009-05-07 · ✦ hep-ph · nucl-th

Dynamically generated resonances from the vector octet-baryon octet interaction

classification ✦ hep-ph nucl-th
keywords resonancescasesformalisminteractionoctetvectoramplitudesapproach
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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.

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  1. Comprehensive study of hidden charm pentaquarks with an improved unitarization method

    hep-ph 2026-05 unverdicted novelty 6.0

    Introduces a hybrid loop function in Bethe-Salpeter unitarization within the local hidden gauge approach to generate hidden-charm pentaquarks, reproducing six known states and predicting new ones in the S=-1, I=1 sector.