Speaker
Rui Zhang
(MIT)
Description
Coulomb-gauge quasi-parton distributions can be computed directly in momentum space on a finite lattice, enabled by the commutativity of their renormalization and Fourier transform. This approach removes the formal inverse problem in coordinate-space methods. Our momentum-space pion quasi-distributions agree with coordinate-space results Fourier transformed with asymptotic extrapolation, indicating that the formal inverse problem in the latter is not a practical concern here. We further extend the framework to higher dimensions and obtain the first 3D image of the pion directly from lattice QCD.
Primary author
Rui Zhang
(MIT)
Co-authors
Anthony Grebe
(UMD)
Daniel Hackett
(Fermilab)
Michael Wagman
(Fermilab)
Yong Zhao
(Argonne National Laboratory)
