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arXiv · hep-ph/0212376

Interplay of Hard and Soft Processes at JLab Energies

Andrei Afanasev·Carl E. Carlson
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Abstract

Even at moderate energy machines, there is a regime where hard pion electroproduction proceeds by a perturbatively calculable process. The process, we claim, is not the leading twist fragmentation one but rather a higher twist process that produces kinematically isolated pions. Semiexclusive data may teach us more about parton distribution functions of the target and the pion distribution amplitude. In addition, there is a connection to generalized parton distribution calculations of exclusive processes in that the perturbative kernel is the same.

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Andrei Afanasev, Carl E. Carlson. 2002-12-26. Interplay of Hard and Soft Processes at JLab Energies. https://arxiv.org/abs/hep-ph/0212376

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