Publications [#246123] of Haiyan Gao

Papers Published

1. with al, ADE, Compton Scattering Cross Section on the Proton at High Momentum Transfer, Phys. Rev. Letts., vol. 98 no. 15 (2007), pp. 152001, ISSN 0031-9007 [doi]
   (last updated on 2026/01/15)

   Abstract:
   Cross-section values for Compton scattering on the proton were measured at 25 kinematic settings over the range s=5-11 and -t=2-7 GeV2 with a statistical accuracy of a few percent. The scaling power for the s dependence of the cross section at fixed center-of-mass angle was found to be 8.0+/-0.2, strongly inconsistent with the prediction of perturbative QCD. The observed cross-section values are in fair agreement with the calculations using the handbag mechanism, in which the external photons couple to a single quark.