TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysProc.8.107
TI  - Shadow generalized parton distributions: a practical approach to the deconvolution problem of DVCS
PY  - 2022/07/13
UR  - https://scipost.org/SciPostPhysProc.8.107
JF  - SciPost Physics Proceedings
JA  - SciPost Phys. Proc.
VL  - 
IS  - 8
SP  - 107
A1  - Bertone, Valerio
AU  - Dutrieux, Hervé
AU  - Mezrag, Cédric
AU  - Moutarde, H.
AU  - Sznajder, Paweł
AB  - Deeply virtual Compton scattering (DVCS) attracts a lot of interest due to its sensitivity to generalized parton distributions (GPDs) which provide a rich access to the partonic structure of hadrons. However, the practical extraction of GPDs for this channel requires a deconvolution procedure, whose feasibility has been disputed. We provide a practical approach to this problem based on a next-to-leading order analysis and a careful study of evolution effects, by exhibiting shadow GPDs with arbitrarily small imprints on DVCS observables at current and future experimental facilities. This shows that DVCS alone will not allow for a model independent extraction of GPDs and a multi-channel analysis is required for this purpose.
ER  -

@Article{10.21468/SciPostPhysProc.8.107,
	title={{Shadow generalized parton distributions: a practical approach to the deconvolution problem of DVCS}},
	author={V. Bertone and H. Dutrieux and C. Mezrag and H. Moutarde and P. Sznajder},
	journal={SciPost Phys. Proc.},
	pages={107},
	year={2022},
	publisher={SciPost},
	doi={10.21468/SciPostPhysProc.8.107},
	url={https://scipost.org/10.21468/SciPostPhysProc.8.107},
}