Vector meson-Baryon dynamics and generation of resonances

Abstract

The purpose of this work is to study vector meson-octet baryon interactions with the aim to find dynamical generation of resonances in such systems. For this, we consider s-, t-, u-channel diagrams along with a contact interaction originating from the hidden local symmetry Lagrangian. We find the contribution from all these sources, except the s-channel, to be important. The amplitudes obtained by solving coupled channel Bethe Salpeter equations for systems with total strangeness zero, show generation of one isospin 3/2, spin 1/2 resonance and three isospin 1/2 resonances: two with spin 3/2 and one with spin 1/2. We identify these resonances with $\Delta (1900)S_{31}$, $N^{\ast }(2080)D_{13}$, $N^{\ast }(1700)D_{13}$, and $N^{\ast }(2090)S_{11}$, respectively.

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