Reconstructing GTMDs [NT/RBRC]

by Dr Valerio Bertone (IRFU, CEA, Université Paris-Saclay)

Friday 31 Jul 2026, 11:00 → 13:00 US/Eastern

CFNS Library ( https://bnl.zoomgov.com/j/1614715193?pwd=WkwxODVWdzZzb29zQnZRVGp3VTBDQT09)

Generalised transverse-momentum distributions (GTMDs) provide the most complete leading-twist description of the partonic structure of hadrons, reducing to generalised parton distributions (GPDs) and transverse-momentum distributions (TMDs) in the appropriate kinematic limits. Since a direct extraction of GTMDs from experimental data is currently out of reach, it is important to establish how they can be faithfully reconstructed from these better-known limits. In this seminar, starting from the operator definition of GTMDs, I will present the computation of the one-loop matching functions which relate GTMDs to GPDs, also discussing their peculiar evolution pattern. I will then discuss how incorporating information from TMDs can complement this GPD-based picture and lead to an accurate reconstruction of GTMDs.