Quark Contributions to Nucleon Momentum and Spin from Domain Wall fermion calculations
High Energy Physics - Lattice
2011-11-07 v2
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.
Keywords
Cite
@article{arxiv.1111.0718,
title = {Quark Contributions to Nucleon Momentum and Spin from Domain Wall fermion calculations},
author = {S. N. Syritsyn and J. R. Green and J. W. Negele and A. V. Pochinsky and M. Engelhardt and Ph. Hagler and B. Musch and W. Schroers},
journal= {arXiv preprint arXiv:1111.0718},
year = {2011}
}
Comments
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