Spectroscopy Results with Polarization Observables in Vector Meson Photoproduction at CLAS

Understanding the baryon spectrum is key to comprehend the underlying dynamics of quark-gluon interactions in baryons. Due to the broad and overlapping nature of baryon resonances, identifying them is very challenging, particularly above $1.7$ GeV c.m. energies. Therefore, in addition to unpolarized cross sections, polarization observables are necessary to isolate resonance contributions from other interference terms. These high-mass excited states are predicted to have strong couplings to final states involving a heavier meson, such as the vector mesons $\omega$ and $\rho$. The photoproduction of these final states have mostly remained unexplored, but their study can significantly contribute towards establishing nuclear resonances. I will present results on polarization observables extracted from a comprehensive analysis of $\omega$ and $\pi^{+}\,\pi^{-}$ photoproduction reactions off a proton using a polarized beam and a FROzen Spin Target at Jefferson Laboratory. The experiment used the CLAS spectrometer and covered c.m. energies up to $2.5$ GeV. Many of these observables are first-time measurements, thus substantially augmenting the world database of polarization observables for these reactions. I will also present results of a partial-wave analysis within the BnGa framework that is based on this new CLAS data.