3 papers
hep-ph2025
String-based axial and helicity-flip GPDs: a comparison to lattice QCD
Florian Hechenberger, Kiminad A. Mamo, Ismail Zahed
We construct an analytic, string based representation of the nucleon's axial and helicity flip conformal moments of generalized parton distributions that holds for any skewness and…
hep-ph2025
Rapidity-Dependent Spin Decomposition of the Nucleon
Florian Hechenberger, Kiminad A. Mamo, Ismail Zahed
We show that the two-dimensional Fourier transform of the generalized parton distributions (GPDs) has two distinct interpretations: at zero skewness () it yields the familiar…
hep-ph2024
Parametrization of GPDs from t-channel string exchange in AdS spaces
Kiminad A. Mamo, Ismail Zahed
We introduce a string-based parametrization for nucleon quark and gluon generalized parton distributions (GPDs) that is valid for all skewness. Our approach leverages conformal mom…