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Abstract: Results of the chiral quark models for the soft matrix elements involvingpions and photons, relevant for high-energy processes, are reviewed. We discussquantities related to the generalized parton distributions of the pion: theparton distribution functions, the parton distribution amplitudes, and thegeneralized form factors. The model predictions are compared to the data orlattice simulations, with good agreement. The QCD evolution from the low quarkmodel scale up to the experimental scales is a crucial ingredient of theapproach.



Autor: Wojciech Broniowski, Enrique Ruiz Arriola

Fuente: https://arxiv.org/







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