Speaker
Description
Gluons play a central role in the proton’s structure, carrying a substantial fraction of its momentum and driving its dynamics at small Bjorken-$x$. A precise determination of the unpolarized gluon parton distribution function (PDF) from first principles is essential for understanding QCD and for reducing uncertainties in high-energy collider predictions. In this talk, we extend our work on the unpolarized gluon PDF to a continuum limit extraction. We use four $N_f=2+1+1$ ensembles of maximally-twisted clover fermions and Iwasaki improved gluons at higher than physical pion mass with lattice spacings $a=0.094, \, 0.079, \, 0.069,$ and $0.057 \, \rm{fm}$. We provide an analysis of excited-state effects and compare our PDF to global fitting results.
