2017/10/17 by Christopher Monahan, Kostas Orginos
Physics and Astronomy · #High-Energy Particle Collisions Research #Lattice (music) #Lattice QCD #Lattice field theory #Operator (biology) #Particle physics theoretical and experimental studies #Perturbation (astronomy) #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #hep-lat
paper · pdf · doi:10.1051/epjconf/201817506004
Eight pages, two figures. Proceedings of the 35th International Symposium on Lattice Field Theory
arxiv created 2017/10/17 · openalex created_date 2017/11/10 · openalex publication_date 2018/01/01 · arxiv updated 2018/04/18 · openalex updated_date 2026/08/05
We present a new approach to extracting continuum quasi distributions from lattice QCD. Quasi distributions are defined by matrix elements of a Wilson-line operator extended in a spatial direction, evaluated between nucleon states at finite momentum. We propose smearing this extended operator with the gradient flow to render the corresponding matrix elements finite in the continuum limit. This procedure provides a nonperturbative method to remove the power-divergence associated with the Wilson line and the resulting matrix elements can be directly matched to light-front distributions via perturbation theory.