On the equivalence of GPD representations
1 Theoretical Physics Division, Rudjer Bošković Institute, HR-10002 Zagreb, Croatia
2 Petersburg Nuclear Physics Institute, Gatchina, 188300, St.Petersburg, Russia
Published online: 28 October 2016
Phenomenological representations of generalized parton distributions (GPDs) implementing the non-trivial field theoretical requirements are employed in the present day strategies for extracting of hadron structure information encoded in GPDs from the observables of hard exclusive reactions. Showing out the equivalence of various GPD representations can help to get more insight into GPD properties and allow to build up flexible GPD models capable of satisfactory description of the whole set of available experimental data. Below we review the mathematical aspects of establishing equivalence between the the double partial wave expansion of GPDs in the conformal partial waves and in the t-channel SO(3) partial waves and the double distribution representation of GPDs
© The Authors, published by EDP Sciences, 2016
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