Speaker
Yong Zhao
(Argonne National Laboratory)
Description
At large hadron momentum, quasi-transverse-momentum-dependent distributions (quasi-TMDs) defined from Coulomb-gauge correlators can be expanded and perturbatively matched to the light-cone TMDs up to the subtraction of an intrinsic soft function. In this talk, I will discuss the derivation of the operator definition of this soft function, as well as the method to extract it from a meson form factor on the lattice. The results obtained from our recent lattice calculation at next-to-leading order shows reasonably good agreement with perturbation theory at short transverse separations and a slower-than-Gaussian decay in the non-perturbative region.
Primary authors
Jinchen He
(University of Maryland)
Swagato Mukherjee
(Brookhaven National Laboratory)
Xiang Gao
(BNL)
Yong Zhao
(Argonne National Laboratory)
Dennis Bollweg
(Flatiron Institute)
