Abstract

An event-based partial wave analysis (PWA) of the reaction γp→pω has been performed on a high-statistics dataset obtained using the CLAS at Jefferson Lab for center-of-mass energies from threshold up to 2.4 GeV. This analysis benefits from access to the world’s first high-precision spin-density matrix element measurements, available to the event-based PWA through the decay distribution of ω→π+π−π<sup>0</sup>.  The data confirm the dominance of the t-channel π<sup>0</sup> exchange amplitude in the forward direction.  The dominant resonance contributions are consistent with the previously identified states F<sub>15</sub>(1680) and D<sub>13</sub>(1700) near threshold, as well as the G<sub>17</sub>(2190) at higher energies.  Suggestive evidence for the presence of a J<sup>P</sup>=5/2<sup>+</sup> state around 2 GeV, a “missing” state, has also been found.  Evidence for other states is inconclusive.