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

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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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Syritsyn, Sergey N.; Green, Jeremy R.; Negele, John W.; Pochinsky, Andrew; Hagler, Philipp G.; Musch, Bernhard U. et al. December 1, 2011.

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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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178

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  • Journal Name: PoS; Journal Volume: LATTICE2011; Conference: 29th International Symposium on Lattice Field Theory (Lattice 2011), Squaw Valley, California, 10-16 Jul 2011

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  • Report No.: JLAB-THY-11-1451
  • Report No.: DOE/OR/23177-1965
  • Report No.: arXiv:1111.0718
  • Grant Number: FG02-94ER40818
  • Grant Number: DEAC02- 05CH11231
  • Grant Number: AC05-06OR23177
  • Grant Number: FG02-96ER40965
  • Office of Scientific & Technical Information Report Number: 1054914
  • Archival Resource Key: ark:/67531/metadc837724

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  • December 1, 2011

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  • May 19, 2016, 9:45 a.m.

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  • Nov. 22, 2016, 1:28 p.m.

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Syritsyn, Sergey N.; Green, Jeremy R.; Negele, John W.; Pochinsky, Andrew; Hagler, Philipp G.; Musch, Bernhard U. et al. Quark Contributions to Nucleon Momentum and Spin from Domain Wall fermion calculations, article, December 1, 2011; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc837724/: accessed October 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.