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HK: Fachverband Hadronen und Kerne

HK 5: Hadron Structure and Spectroscopy II

HK 5.6: Talk

Monday, March 16, 2009, 15:45–16:00, H-ZO 30

Dual parametrisation and Abel transform tomography for the DVCS amplitude. — •Alena Moiseeva — Institut fuer Theoretische Physik II, Ruhr-Universitaet Bochum, 44780 Bochum

We present a way to extract the maximum amount of information about Generalized Parton Distributions (GPDs) from amplitudes of hard exclusive processes. For investigation of the amplitudes we use the dual parametrization of GPDs, which provides us very handy and flexible tool to describe the amplitudes in terms of single function- so-called quintessence function. We show that relation between the quintessence function and the amplitude of the hard exclusive process corresponds to Abel transform tomography.