Parton Distribution Functions from Ioffe Time Pseudodistributions from Lattice Calculations: Approaching the Physical Point
Bálint Joó, Joseph Karpie, Kostas Orginos, Anatoly Radyushkin, David Richards, Savvas Zafeiropoulos
Abstract
We present results for the unpolarized parton distribution function of the nucleon computed in lattice QCD at the physical pion mass. This is the first study of its kind employing the method of Ioffe time pseudodistributions. Beyond the reconstruction of the Bjorken-x dependence, we also extract the lowest moments of the distribution function using the small Ioffe time expansion of the Ioffe time pseudodistribution. We compare our findings with the pertinent phenomenological determinations.
Topics & Concepts
PartonPhysicsLattice (music)Distribution functionDistribution (mathematics)Lattice field theoryParticle physicsLattice QCDStatistical physicsQuantum electrodynamicsQuarkQuantum mechanicsQuantum chromodynamicsMathematicsMathematical analysisAcousticsParticle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsHigh-Energy Particle Collisions Research