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Near threshold electroproduction of the ω meson at Q <sup>2</sup>≈0.5 GeV<sup>2</sup>
Ambrozewicz, P Mitchell, J Dunne, J Markowitz, P Martoff, CJ Reinhold, J Zeidman, B Abbott, DJ Ahmidouch, A Armstrong, CS
Ambrozewicz, P
Mitchell, J
Dunne, J
Markowitz, P
Martoff, CJ
Reinhold, J
Zeidman, B
Abbott, DJ
Ahmidouch, A
Armstrong, CS
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Journal Article
Date
2004-01-01
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10.1103/PhysRevC.70.035203
Abstract
Electroproduction of the ω meson was investigated in 1H(e,e′p)ω reaction. The measurement was performed at a four-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 γ*p → ωp reaction channel.
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Physical Review C - Nuclear Physics
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