Artificial neural network modelling of generalised parton distributions
arXiv:2112.10528 · doi:10.1140/epjc/s10052-022-10211-5
Abstract
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.
16 pages, 10 figures
References in corpus (5)
- A first unbiased global determination of polarized PDFs and their uncertainties
- Study of Monte Carlo approach to experimental uncertainty propagation with MSTW 2008 PDFs
- Covariant Extension of the GPD overlap representation at low Fock states
- On "dual" parametrizations of generalized parton distributions
- Dual parametrization of generalized parton distributions in two equivalent representations