We report the first nucleon gluon parton distribution function (PDF) using Large-Momentum Effective Theory (LaMET). We compute the matching coefficients for the gluon operator with the best signal to perform hybrid-renormalization and matching to the lightcone at the one-loop level. We demonstrate that with the proper Wilson coefficients in place, the counterterms for the renormalization are...
We report on recent progress in calculating gluon parton distribution functions (PDFs) using Large-Momentum Effective Theory (LaMET) combined with a self-renormalization approach to address the renormalization of gluon operators. Our study uses three HISQ ensembles with lattice spacings of $a = \{0.0888, 0.1207, 0.1510\}$ fm and a valence pion mass of $M_\pi \approx$ 310 MeV, with continuum...
We report a lattice QCD calculation of the nucleon gluon parton distribution function in the continuum-limit, employing large-momentum effective theory. The calculation is carried out on the 2+1 flavour CLQCD ensembles with three lattice spacings a = {0.105, 0.0897, 0.0775} fm and pion mass of approximately 300 MeV, covering nulceon momenta up to 1.97 GeV. Distillation technique is applied to...
We use the ensemble C24P29 provided by the CLQCD collaboration, insert the topological current using the proton external state of the momentum smear under the Coulomb gauge of the $5-\mathrm{HYP}$ smear, extract the matrix elements to calculate the gluon helicity under lattice QCD, and the calculation proves that different components of the topological currents $𝐾^\mu$ can be used to give...
