Integral representations for nonperturbative GPDs in terms of perturbative diagrams

Abstract

An integral representation is suggested for generalized parton distributions which automatically satisfies the polynomiality and positivity constraints. This representation has the form of an integral of perturbative triangle diagrams over the masses of three propagators with an appropriate weight depending on these masses. An arbitrary D term can be added.

15 pages

References in corpus (8)

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• Generalized parton distributions in impact parameter space
• Impact Parameter Dependent Parton Distributions and Transverse Single Spin Asymmetries
• Positivity bounds on generalized parton distributions in impact parameter representation
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• Generalized Parton Distributions: visions, basics, and realities
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• Estimates for Pion-Photon Transition Distributions
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• Forces inside a strongly-coupled scalar nucleon
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• Artificial neural network modelling of generalised parton distributions
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