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


  • Kornelija Passek-Kumerički Rudjer Bošković Institute




exclusive processes, meson production, generalized parton distributions, distribution amplitudes, higher twist


The wide-angle photo- and electroproduction of pions is investigated within the handbag mechanism in which the γ (∗)N → πN0 amplitudes factorize into subprocess amplitudes,γ (∗) q → πq0 , 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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How to Cite

Passek-Kumerički K. On wide-angle photo- and electroproduction of pions to twist-3 accuracy. Supl. Rev. Mex. Fis. [Internet]. 2022 Aug. 3 [cited 2023 Apr. 1];3(3):0308113 1-5. Available from: https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/6339