Dispersion relations and QCD factorization in hard reactions

Details Dispersion relations and QCD factorization in hard reactions Dispersion relations and QCD factorization in hard reactions

2007-10-23

arxiv.org/abs/0710.4211v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk given at International Conference ``Hadron Structure'07'', Modra-Harmonia, Slovakia

Scientific paper

We study analytical properties of the hard exclusive process amplitudes. We
found that QCD factorization for deeply virtual Compton scattering and hard
exclusive vector meson production results in the subtracted dispersion relation
with the subtraction constant determined by the Polyakov-Weiss $D$-term.

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