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arXiv · 1006.0213

Partonic Interpretation of Generalized Parton Distributions

Gary R. Goldstein·Simonetta Liuti
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Abstract

Generalized Parton Distributions describe, within QCD factorization, the non perturbative component in the amplitudes for deeply virtual exclusive processes. However, in order for a partonic interpretation to hold, semi-disconnected diagrams should not contribute. We show that this condition is not satisfied for non-forward kinematics at leading order, and that gluon mediated re-interactions are essential for a consistent description in terms of parton degrees of freedom.

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Gary R. Goldstein, Simonetta Liuti. 2010-06-08. Partonic Interpretation of Generalized Parton Distributions. https://doi.org/10.1142/s2010194511001681

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