What can we learn on GPDs from Lattice QCD *

Jul 22, 2022, 10:40 AM
Classroom 512 (APCTP)

Classroom 512


Asia Pacific Center for Theoretical Physics, Pohang, Gyeongbuk 37673, Korea


Martha Constantinou (Temple University)


Generalized parton distributions (GPDs) are important quantities that characterize the structure of hadrons. They provide information about the partons’ momentum distribution and also on their distribution in position space. Most of the information from lattice QCD is on the Mellin moments of GPDs, namely form factors and their generalizations. Recent developments in calculations of matrix elements of boosted hadrons coupled with non-local operators opened a new direction for extracting the x dependence of GPDs. In this talk, we will discuss selected results on GPDs at the twist-2 and twist-3 levels. The latter is only recently explored in lattice QCD and information from experiments is basically non-existing. As we will discuss in the talk, twist-3 GPDs are essential for several reasons.

Primary author

Martha Constantinou (Temple University)

Presentation materials