Speaker
Dr
春华 曾
Description
We report a state-of-the-art lattice QCD calculation of the nucleon unpolarized gluon parton dis-
tribution function employing large-momentum effective theory. The calculation is carried out on the
2+1 flavor CLQCD ensembles with five lattice spacings a = {0.105, 0.0897, 0.0775, 0.0688, 0.0519}
fm and various pion masses ranging from 136 MeV to 317 MeV, covering nulceon momenta up to 3
GeV. Distillation technique is applied to improve the signal of two-point correlators. We then apply
the state-of-the-art hybrid renormalization and one-loop perturbative matching, and extrapolate
the result to the continuum limit, infinite momentum limit and physical pion mass.
