Near threshold electroproduction of the omega meson at Q2 ~ 0.5 GeV2

Abstract

Electroproduction of the omega meson was investigated in the p(e,e'p)omega reaction. The measurement was performed at a 4-momentum transfer Q2 ~ 0.5 GeV2. Angular distributions of the virtual photon-proton center-of-momentum cross sections have been extracted over the full angular range. These distributions exhibit a strong enhancement over t-channel parity exchange processes in the backward direction. According to a newly developed electroproduction model, this enhancement provides significant evidence of resonance formation in the gamma* p -> omega p reaction channel.

10 pages, 14 figures, typos and references corrected

References in corpus (5)

• Quasi-Two-Body Decays of Nonstrange Baryons
• Vector Meson Photoproduction with an Effective Lagrangian in the Quark Model
• $\omega$ and $\rho$ Photoproduction with an Effective Quark Model Lagrangian
• Nucleonic resonance excitations with linearly polarized photon in $\gamma p\to \omega p$
• Nucleonic resonance excitations and "missing resonances" in the $\omega$ meson photoproduction

Cited by in corpus (4)

• Beam asymmetry in near threshold omega photoproduction off the proton
• Vector meson photoproduction studied in its radiative decay channel
• Quasifree Lambda, Sigma^0, and Sigma^- electroproduction from 1,2H, 3,4He, and carbon
• Polarization degrees of freedom in near-threshold photoproduction of omega mesons in the pi^0 gamma decay channel