Title
First Measurements of the Double-Polarization Observables F, P, and H in Omega Photoproduction off Transversely Polarized Protons in the N* Resonance Region
DOI
10.1103/PhysRevLett.122.162301
Abstract
First measurements of double-polarization observables in ω photoproduction off the proton are presented using transverse target polarization and data from the CEBAF Large Acceptance Spectrometer (CLAS) FROST experiment at Jefferson Lab. The beam-target asymmetry F has been measured using circularly polarized, tagged photons in the energy range 1200–2700 MeV, and the beam-target asymmetries H and P have been measured using linearly polarized, tagged photons in the energy range 1200–2000 MeV. These measurements significantly increase the database on polarization observables. The results are included in two partial-wave analyses and reveal significant contributions from several nucleon (N∗) resonances. In particular, contributions from new N∗resonances listed in the Review of Particle Properties are observed, which aid in reaching the goal of mapping out the nucleon resonance spectrum.
Document Type
Article
Publication Date
4-23-2019
Publisher Statement
Copyright © 2019. This article first appeared in Physical Review Letters 122, no. 16 (April 23, 2019): 162301.
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Roy, P., S. Park, V. Crede, A. V. Anisovich, E. Klempt, V. A. Nikonov, G. Gilfoyle, et al. “First Measurements of the Double-Polarization Observables F, P, and H in Omega Photoproduction off Transversely Polarized Protons in the N* Resonance Region.”
Recommended Citation
Roy, P., S. Park, V. Crede, A. V. Anisovich, E. Klempt, V. A. Nikonov, G. Gilfoyle, et al. “First Measurements of the Double-Polarization Observables F, P, and H in Omega Photoproduction off Transversely Polarized Protons in the N* Resonance Region.” Physical Review Letters 122, no. 16 (April 23, 2019): 162301.