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

B. Zeidman (for the E91-016 Collaboration; C. J. Martoff; J. Dunne; Jefferson Lab); J. Mitchell; J. Reinhold; P. Ambrozewicz; P. Markowitz

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

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arxiv nucl-ex/0403003 v3 pith:FAQBTWFX submitted 2004-03-03 nucl-ex

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

P. Ambrozewicz , J. Mitchell , J. Dunne , P. Markowitz , C. J. Martoff , J. Reinhold , B. Zeidman (for the E91-016 Collaboration , Jefferson Lab) This is my paper

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keywords omegaelectroproductionangulardistributionsenhancementgev2mesonreaction

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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.

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

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