Current status of a partial wave analysis of the $\gamma p \rightarrow p \omega$ reaction using data from CLAS at Jefferson Lab

ORAL

Abstract

Relativistic quark models predict strong couplings to $p\omega$ ---relative to $N\pi$---for some of the {\em missing} $N^*$ states. Previous searches for these states in $\gamma p \rightarrow p \omega$ have relied solely on differential cross section measurements. I will present final differential cross section and $\omega$ recoil polarization measurements obtained from the CLAS g11a dataset. Measurements have been made in 112 $\sqrt{s}$ bins over the range $1.72 GeV < \sqrt{s} < 2.84 GeV$. The quark model predictions, along with the added constraint of the recoil polarization measurements, make $\omega$ photoproduction a perfect candidate for a partial wave analysis. Preliminary PWA results will be presented, including comparisons of published models to our recoil polarization measurements.

Authors

  • Mike Williams

    Carnegie Mellon University