25th International Spin Symposium (SPIN 2023)

Reconstruction of GPDs in the small x region

Sep 25, 2023, 2:00 PM

18m

Meeting Room 3-4 (Durham Convention Center)

Talk 3D Structure of the Nucleon: GPDs and Form Factors 3D Structure of the Nucleon: GPDs and Form Factors

Speaker

Hervé Dutrieux (College of William & Mary)

Description

Perturbative evolution offers the well-identified possibility of reconstructing the skewness dependence of generalized parton distributions (GPDs) in the small Bjorken x domain. This general idea has notably been used to constrain gluon PDFs at small x from exclusive heavy meson photoproduction. We study the regime of validity and the uncertainty associated to this method. We discuss more generally the crucial role that evolution plays to guide modelling strategies of GPDs, whether from exclusive processes at small and moderate skewness or from lattice data.

Presentation materials

Presentation_2023_09_25__SPIN_.pdf