Quark Contributions to Nucleon Momentum and Spin from Domain Wall\n fermion calculations

2011/11/02 by Sergey Syritsyn, J. R. Green, Syritsyn, S. N. +14 · 1 citation
Engineering · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High-Energy Particle Collisions Research #Nuclear physics research studies #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Superconducting Materials and Applications

paper · pdf · doi:10.48550/arxiv.1111.0718

openalex publication_date 2011/11/02 · openalex created_date 2020/05/13 · openalex updated_date 2026/07/28

Abstract

We report contributions to the nucleon spin and momentum from light quarks\ncalculated using dynamical domain wall fermions with pion masses down to 300\nMeV and fine lattice spacing a=0.084 fm. Albeit without disconnected diagrams,\nwe observe that spin and orbital angular momenta of both u and d quarks are\nopposite, almost canceling in the case of the d quark, which agrees with\nprevious calculations using a mixed quark action. We also present the full\nmomentum dependence of n=2 generalized form factors showing little variation\nwith the pion mass.\n

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