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Generalized parton correlation functions for a spin-0 hadron
Meißner, S Goeke, K Metz, A Schlegel, M
Meißner, S
Goeke, K
Metz, A
Schlegel, M
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Journal Article
Date
2008-08-01
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10.1088/1126-6708/2008/08/038
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 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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Springer Science and Business Media LLC
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Journal of High Energy Physics
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