Publications [#246140] of Haiyan Gao

Papers Published
  1. with al, PAE, Near Threshold Electropoduction of the omega meson at Q^2=0.5 (GeV/c)^2, Phys. Rev. C, vol. 70 no. 3 (2004), pp. 035203 [doi] .

    Electroproduction of the ω meson was investigated in 1H(e,e′p)ω reaction. The measurement was performed at a four-momentum transfer Q 2≈0.5 GeV 2. 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.