Abstract
In specific kinematics, hard exclusive amplitudes may be factorized into a short distance dominated part computable in a perturbative way on the one hand, and universal, confinement related hadronic matrix elements on the other hand. The extension of this description to processes such as backward meson electroproduction and forward meson production in antiproton-nucleon scattering leads to define new hadronic matrix elements of three quark operators on the light cone, the nucleon-to-meson transition distribution amplitudes, which shed a new light on the nucleon structure.
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Acknowledgements
This work is partly supported by Grant No. 2015/17/B/ST2/01838 by the National Science Center in Poland, by the French grant ANR PARTONS (Grant No. ANR-12-MONU-0008-01), by the COPIN-IN2P3 agreement, by the Labex P2IO and by the Polish-French collaboration agreement Polonium. K.S. acknowledges the support from the Russian Science Foundation (Grant No. 14-22-00281).
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Pire, B., Semenov-Tian-Shansky, K. & Szymanowski, L. Baryon-to-Meson Transition Distribution Amplitudes: Formalism and Models. Few-Body Syst 58, 74 (2017). https://doi.org/10.1007/s00601-017-1244-z
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DOI: https://doi.org/10.1007/s00601-017-1244-z