Speaker
Yizhuang Liu
(Jagiellonian University)
Description
In this talk we will provide a survey of three fundamental objects: quasi-TMDPDF, quasi-LFWF amplitudes and (quark non-singlet ) quasi-PDF matching kernel that appears naturally in lattice calculation of various parton distribution functions. We demonstrate how TMD factorization or threshold factorization works for the corresponding objects with a common perturbative hard kernel: the universal heavy-light Sudakov form factor. We show how the universal TMDPDF/LFWF amplitudes can be extracted by combining factorization theorems for the quasi-TMD quantities with an auxiliary space-like form factor. Finally, we explain how the NNLO heavy-light Sudakov form factor can be extracted through the threshold limit of quasi-PDF matching kernel.
Primary author
Yizhuang Liu
(Jagiellonian University)