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arXiv · 2508.20242

Semi-inclusive pion electroproduction at the highest transverse momenta

Andrei Afanasev·Carl E. Carlson
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Abstract

At the energies of present and future electron accelerators designed to study the structure of hadrons, there is a regime where hard pion electroproduction proceeds by a perturbatively calculable process in QCD. The process is not the leading twist fragmentation one but rather a higher twist process that produces kinematically isolated pions. Semi-inclusive 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 electroproduction of mesons in that the perturbative kernel is the same.

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Andrei Afanasev, Carl E. Carlson. 2025-08-27. Semi-inclusive pion electroproduction at the highest transverse momenta. https://arxiv.org/abs/2508.20242

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