Dispersion relations and QCD factorization in hard reactions

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

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High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/164777

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0710.4211
 http://arxiv.org/abs/0710.4211

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arXiv