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

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

2011-11-03

arxiv.org/abs/1111.0718v2

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 5 figures, NT-LBNL-11-020, MIT-CTP-4323. Presented at the 29th International Symposium on Lattice Field Theory (Latti

Scientific paper

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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