Differential cross sections and photon beam asymmetries for π0 photoproduction have been measured at Eγ = 1.5 - 2.4 GeV and at the π0 scattering angles, - 1 < cos Θc . m . < - 0.6. The energy-dependence of differential cross sections for u-channel π0 production has been determined. An enhancement at backward angles is found above Eγ = 1.9 GeV. This is likely to be due to u-channel diagrams. Photon beam asymmetries have been obtained for the first time at backward angles, showing a strong angular dependence at Eγ > 2.0 GeV.
|Number of pages||6|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|Publication status||Published - 2007 Nov 29|
ASJC Scopus subject areas
- Nuclear and High Energy Physics