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arXiv · 0805.3165

Generalized parton correlation functions for a spin-0 hadron

S. Meissner·A. Metz·M. Schlegel·K. Goeke
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Abstract

The fully unintegrated, off-diagonal quark-quark correlator for a spin-0 hadron is parameterized in terms of so-called generalized parton correlation functions. Such objects are of relevance for the phenomenology of certain hard exclusive reactions. In particular, they can be considered as {\it mother distributions} of generalized parton distributions on the one hand and transverse momentum dependent parton distributions on the other. Therefore, our study provides new, model-independent insights into the recently proposed nontrivial relations between generalized and transverse momentum dependent parton distributions. As a by-product we obtain the first complete classification of generalized parton distributions beyond leading twist.

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S. Meissner, A. Metz, M. Schlegel, K. Goeke. 2008-08-11. Generalized parton correlation functions for a spin-0 hadron. https://doi.org/10.1088/1126-6708%2F2008%2F08%2F038

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