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

2011/11/02 by S. N. Syritsyn, Sergey Syritsyn, Syritsyn, S. N. +20 · 2 citations
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 #hep-lat

paper · pdf · doi:10.48550/arxiv.1111.0718

7 pages, 5 figures, NT-LBNL-11-020, MIT-CTP-4323. Presented at the 29th International Symposium on Lattice Field Theory (Lattice 2011), Squaw Valley, California, 10-16 Jul 2011

openalex publication_date 2011/11/02 · arxiv created 2011/11/04 · arxiv updated 2011/11/07 · 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 calculated using dynamical domain wall fermions with pion masses down to 300 MeV and fine lattice spacing a=0.084 fm. Albeit without disconnected diagrams, we observe that spin and orbital angular momenta of both u and d quarks are opposite, almost canceling in the case of the d quark, which agrees with previous calculations using a mixed quark action. We also present the full momentum dependence of n=2 generalized form factors showing little variation with the pion mass.

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