12 papers
Proton isovector helicity PDF at NNLO and the twist-3 moment from lattice QCD at physical quark masses
Xiang Gao, Andrew D. Hanlon, Swagato Mukherjee +5
We present a lattice quantum chromodynamics calculation of the -dependent isovector quark helicity parton distribution function (PDF) of the proton in the large momentum effecti…
Quark-Mass Dependence of Light-Nuclei Masses from Lattice QCD and Trace-Anomaly Contributions to Nuclear Bindings
Debsubhra Chakraborty, Noah Chavez, Xiang Gao +2
We present lattice QCD calculations of the masses of the deuteron, dineutron, Helium-3 and Helium-4 with physical sea quarks and valence quark masses corresponding to pion masses b…
Large-Momentum Effective Theory's Asymptotic Extrapolation vs the Inverse Problem
Jiunn-Wei Chen, Xiang Gao, Jinchen He +10
Large-Momentum Effective Theory (LaMET) is a physics-guided systematic expansion to calculate light-cone parton distributions, including collinear (PDFs) and transverse-momentum-de…
Nucleon Parton Distribution Functions from Boosted Correlations in the Coulomb gauge
Xiang Gao, Jinchen He, Joshua Lin +4
Recently, a novel approach has been proposed to compute parton distributions through the use of boosted correlators fixed in the Coulomb gauge from lattice QCD, within the framewor…
Skewness-dependent moments of the pion GPD from nonlocal quark-bilinear correlators
Xiang Gao, Swagato Mukherjee, Qi Shi +2
We present lattice QCD calculations of the odd Mellin moments of pion valence-quark generalized parton distribution (GPD) up to fifth order, , and for the skewn…
Lattice-QCD validation of hadron mass and trace-anomaly decomposition sum rules
Dennis Bollweg, Heng-Tong Ding, Xiang Gao +2
We present the first lattice-QCD validation of multiple sum rules associated with quark-gluon decomposition of hadron mass by computing all components from first principles. We ach…