19 research outputs found
Photoproduction and the Gluon Structure of the Nucleon
Using short distance QCD methods based on the operator product expansion, we
calculate the photoproduction cross section in terms of the gluon
distribution function of the nucleon. Comparing the result with data, we show
that experimental behaviour of the cross section correctly reflects the
-dependence of the gluon distribution obtained from deep inelastic
scattering.Comment: 8 pages, latex, 4 figure
High- Elastic -scattering and QCD predictions
In the framework of pertubative QCD it is argued that in the elastic
-scattering at few the light-cone-frame
helicity-flip amplitudes could not be omitted. The obtained ratio
of Rosenbluth structure functions is shown to be in a good agreement with
experimental data. The high behavior of tensor analysing power
is discussed.Comment: 6 pages + 2 ps figures not included, LaTeX, ITP-93-33
On the Sum Rule Approach to Quarkonium-Hadron Interactions
We extend a recent sum rule calculation for inelastic quarkonium-hadron
interactions to realistic parton distribution functions; we also include finite
target-mass corrections. Both modifications are shown to have no significant
effect on the resulting cross section behaviour but the performed analysis
gives useful insights on the sum-rule approach in general.Comment: 6-page text in LaTeX plus postscript figur