From chiral quark models to high-energy processes

Details From chiral quark models to high-energy processes From chiral quark models to high-energy processes

2009-04-20

arxiv.org/abs/0904.3003v1

Acta Phys.Polon.B40:2165-2174,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

Dedicated to the memory of Jan Kwiecinski, presented by WB at the Cracow Epiphany Conference on hadron interactions at the daw

Scientific paper

We show the results of low-energy chiral quark models for soft matrix elements involving pions and photons. Such soft elements, upon convolution with the hard matrix elements, are relevant in various high-energy processes. We focus on quantities related to the generalized parton distributions of the pion: the parton distribution functions, the parton distribution amplitudes, and the generalized form factors. Wherever possible, the model predictions are confronted with the data or lattice simulations, where surprisingly good agreement is achieved. The QCD evolution from the low quark model scale up to the scale of the data is crucial for this agreement.

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