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arXiv · 0811.4268

Duality and Factorization Theorem in QCD

I. V. Anikin·I. O. Cherednikov·N. G. Stefanis·O. V. Teryaev
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Abstract

We find that in "two-photon"-like processes in the scalar $φ^3_E$ model and also in hadron-pair production arising from the collisions of a real (transversely polarized) and a highly virtual, longitudinally polarized, photon in QCD, there is duality between two distinct nonperturbative mechanisms. These two mechanisms, one involving a twist-3 Generalized Distribution Amplitude, the other employing a leading-twist Transition Distribution Amplitude, are associated with different regimes of factorization. In the kinematical region, where the two mechanisms overlap, duality is observed for the scalar $φ^3_E$ model, while in the QCD case the appearance of duality turns out to be sensitive to the particular nonperturbative model applied and can, therefore, be used as a tool for selecting the most appropriate one.

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I. V. Anikin, I. O. Cherednikov, N. G. Stefanis, O. V. Teryaev. 2008-11-26. Duality and Factorization Theorem in QCD. https://arxiv.org/abs/0811.4268

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