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arXiv · 2203.12334

On wide-angle photo- and electroproduction of pions to twist-3 accuracy

K. Passek-Kumerički
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Abstract

The wide-angle photo- and electroproduction of pions is investigated within the handbag mechanism in which the $\gamma^{(*)} N\to \pi N'$ amplitudes factorize into subprocess amplitudes,$\gamma^{(*)} q\to \pi q'$, and form factors representing $1/x$-moments of generalized parton distributions (GPDs). The subprocess is calculated to twist-3 accuracy taking into account both the 2- and 3-body Fock components of the pion. The cross-sections are compared to experiment and spin-effects are discussed.

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K. Passek-Kumerički. 2022-03-23. On wide-angle photo- and electroproduction of pions to twist-3 accuracy. https://arxiv.org/abs/2203.12334

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