Erlangen 2001 – wissenschaftliches Programm
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HK: Physik der Hadronen und Kerne
HK 10: Postersitzung: Theorie
HK 10.5: Poster
Dienstag, 20. März 2001, 10:30–12:45, R
Deeply virtual Compton scattering off the nucleon : status and perspectives — •Marc Vanderhaeghen1, N. Kivel2, and M.V. Polyakov3 — 1Inst. f. Kernphysik, Johannes Gutenberg Universität, Mainz, Germany — 2Inst. f. Theoretische Physik, Universität Regensburg, Germany — 3Inst. f. Theoretische Physik II, Ruhr-Universität Bochum, Germany
A review will be given of the very recent developments in the field of deeply virtual Compton scattering (DVCS), as well as hard meson electroproduction reactions on the nucleon [1]. A unified theoretical description of those processes has emerged over the last few years, which gives access to generalized (skewed) parton distributions, sheding a new light on nucleon structure.
We discuss in particular the twist-3 effects to the various DVCS observables, which have been calculated very recently [2]. Furthermore, we address the issue how to extract the skewed parton distributions from observables.
The experimental status and perspectives in this field will also be discussed.
[1] M. Vanderhaeghen, Eur.Phys.J. A 8, 455 (2000)
[2] N. Kivel, M.V. Polyakov, M. Vanderhaeghen, hep-ph/0012136