Abstract
We consider several single spin asymmetries in inclusive p ↑ p and p ̄ ↑p processes as higher twist QCD contributions, taking into account spin and intrinsic k ⊥ effects in the quark distribution functions. This approach has been previously applied to the description of the single spin asymmetries observed in p ↑p→π X reactions and all its parameters fixed: we give here predictions for new processes, which agree with experiments for which data are available, and suggest further possible measurements.
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