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

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

2004-03-03

arxiv.org/abs/nucl-ex/0403003v3

Phys.Rev.C70:035203,2004

Physics

Nuclear Physics

Nuclear Experiment

10 pages, 14 figures, typos and references corrected

Scientific paper

10.1103/PhysRevC.70.035203

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.

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