Authors: Julian Salamanca, Philip Cole, and the CLAS Collaboration
Title: Photoproduction of phi-Mesons off the Proton Using Linearly Polarized Photons at Threshold Energies
Keywords: linearly-polarized photons
Abstract:
The observables provided by linearly-polarized photons are of interest in delineating the contributions of the various hadronic processes giving rise to vector meson photoproduction. This observables can be expressed in term of the Spin Density Matrix Elements (SDMEs) which are a theoretical tool for exploring the nature of the parity exchange at threshold energies, the strangeness content of proton, as well as extracting signatures for the violation of Okubo-Zweig-Iizuka observation (OZI rule). Here we show preliminarly measuments of SDMEs for $\vec{\gamma} p\rightarrow \phi p $ in the photon energy range of 1.9 to 2.1~GeV. Linearly polarized photons were possible by the Coherent Linear Bremsstrahlung Facility in Hall B of Jefferson Laboratory, Newport News, VA. The data were collected during the g8b run in the summer of 2005.
|