Regular Article - Theoretical Physics
Artificial neural network modelling of generalised parton distributions
IRFU, CEA, Université Paris-Saclay, 91191, Gif-sur-Yvette, France
2 Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
3 National Centre for Nuclear Research (NCBJ), Pasteura 7, 02-093, Warsaw, Poland
Accepted: 13 March 2022
Published online: 23 March 2022
We discuss the use of machine learning techniques in effectively nonparametric modelling of generalised parton distributions (GPDs) in view of their future extraction from experimental data. Current parameterisations of GPDs suffer from model dependency that lessens their impact on phenomenology and brings unknown systematics to the estimation of quantities like Mellin moments. The new strategy presented in this study allows to describe GPDs in a way fulfilling theory-driven constraints, keeping model dependency to a minimum. Getting a better grip on the control of systematic effects, our work will help the GPD phenomenology to achieve its maturity in the precision era commenced by the new generation of experiments.
© The Author(s) 2022. corrected publication 2022
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