Publications [#246127] of Haiyan Gao

Papers Published

1. al, DJHE, Polarization Transfer in Proton Compton Scattering at High Momentum Transfer, Phys. Rev. Lett., vol. 94 no. 24 (2005), pp. 242001, American Physical Society (APS), ISSN 0031-9007 [doi]
   (last updated on 2026/01/14)

   Abstract:
   Compton scattering from the proton was investigated at s=6.9GeV2 and t=-4.0GeV2 via polarization transfer from circularly polarized incident photons. The longitudinal and transverse components of the recoil proton polarization were measured. The results are in disagreement with a prediction of perturbative QCD based on a two-gluon exchange mechanism, but agree well with a prediction based on a reaction mechanism in which the photon interacts with a single quark carrying the spin of the proton. © 2005 The American Physical Society.