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P P data are taken from Adams et al, Fermilab-Pub-91/13-E.
Ratio of the spin averaged invariant cross section for PI0 production in p p and pbar p interactions.
A measurement of the direct production of photons with high transverse momentum from\(\bar pp\) collisions at\(\sqrt s= 630\) GeV is presented. The structure of events containing a high transverse momentum photon is studied. The results support predictions from QCD theory.
The last data point is an average over the interval 60-100 GeV in which 5 events are found.
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