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Non-factorized genuine twist 3 in exclusive electro-production of vector mesons

I. V. Anikin·O. V. Teryaev
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Abstract

We present an analysis of genuine twist-3 quark contributions to the amplitude of exclusive electro-production of transversely polarized vector mesons. Using the formalism based on the momentum representation we calculated all the genuine twist-3 terms of quark contributions to gamma_T^* --> rho_T amplitude. We found that these terms can not be factorized owing to the existence of the infrared divergencies in the amplitude of hard sub-processes.

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I. V. Anikin, O. V. Teryaev. 2002-08-13. Non-factorized genuine twist 3 in exclusive electro-production of vector mesons. https://doi.org/10.1016/s0375-9474(02)01216-2

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