Le. Gordon et W. Vogelsang, PROMPT PHOTON PRODUCTION WITH POLARIZED PROTON-BEAMS IN NEXT-TO-LEADING ORDER, Physical review. D. Particles and fields, 49(1), 1994, pp. 170-176
We present numerical results for the next-to-leading order [0(alphaalp
ha(s)2)] corrections to the inclusive cross section for the production
of prompt photons with longitudinally polarized proton beams. It is s
hown that polarized prompt photon production should offer a good possi
bility to decide between presently suggested proton spin scenarios. Fu
rthermore we examine the perturbative stability of the cross sections
and asymmetries and briefly discuss the scale dependence of the result
s.