φ-meson photoproduction off the protons by using linearly polarized photons in the mid- to higher-t regimes at threshold energies

Conference · Fri Jan 08 04:00:00 EST 2010 · Chinese Physics C

DOI:https://doi.org/10.1088/1674-1137/33/12/052· OSTI ID:1999412

Salamanca, Julian; Cole, Philip

Observables from vector meson photoproduction by linearly-polarized photons can be expressed in term of bilinear combinations of helicity amplitudes parameterized by the Spin Density Matrix Elements (SDMEs). These SDMEs give straightforward relations for understanding the nature of the parity exchange at threshold energies, as well as for extracting signatures of the Okubo-Zweig-Iizuka violation. This paper will show preliminary measurements of SDMEs for vec gamma-p -> var phi-p in the photon energy range of 1.7 to 1.9 GeV (momentum transfer squared t range of -1.2 to -0.25 GeV2) and 1.9 to 2.1 GeV (t range of -1.4 to -0.25 GeV2) from the g8b experimental data collected in the summer of 2005 in the Hall B of Jefferson Lab.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1999412
• Report Number(s): JLAB-PHY-09-1075; DOE/OR/23177-1085
• Conference Information: Journal Name: Chinese Physics C Journal Issue: 12 Journal Volume: 33
• Country of Publication: United States
• Language: English