Speaker
Description
For a long time, lattice QCD was unable to address the x-dependence of partonic distributions, direct access to which is impossible in Euclidean spacetime. Recent years have brought a breakthrough for such calculations when it was realized that partonic light-cone correlations can be accessed through spatial correlations computable on the lattice. Appropriately devised observables can be factorized into physical PDFs via a perturbative procedure called matching, analogous to the standard factorization of experimental cross sections. In this talk, I will discuss the tremendous progress of this research program in the last few years, concentrating on the two most popular approaches of quasi- and pseudo-PDFs. I will present the cases of the most studied twist-2 PDFs, as well as the exploratory direction of twist-3 distributions. Possibilities of synergy with phenomenology will be outlined.