Nucleon Scalar and Tensor Charges from Lattice QCD with Light Wilson Quarks

J. R. Green; J. W. Negele; A. V. Pochinsky; S. N. Syritsyn; M. Engelhardt; S. Krieg

doi:10.1103/PhysRevD.86.114509

Nucleon Scalar and Tensor Charges from Lattice QCD with Light Wilson Quarks

High Energy Physics - Lattice 2013-05-30 v4 High Energy Physics - Phenomenology Nuclear Theory

Authors: J. R. Green , J. W. Negele , A. V. Pochinsky , S. N. Syritsyn , M. Engelhardt , S. Krieg

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Abstract

We present 2+1 flavor Lattice QCD calculations of the nucleon scalar and tensor charges. Using the BMW clover-improved Wilson action with pion masses between 150 and 350 MeV and three source-sink separations between 0.9 and 1.4 fm, we achieve good control over excited-state contamination and extrapolation to the physical pion mass. As a consistency check, we also present results from calculations using unitary domain wall fermions with pion masses between 300 and 400 MeV, and using domain wall valence quarks and staggered sea quarks with pion masses between 300 and 600 MeV.

Keywords

lattice QCD nucleon scalar charge nucleon tensor charge Wilson quarks excited-state contamination chiral extrapolation domain wall fermions

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@article{arxiv.1206.4527,
  title  = {Nucleon Scalar and Tensor Charges from Lattice QCD with Light Wilson Quarks},
  author = {J. R. Green and J. W. Negele and A. V. Pochinsky and S. N. Syritsyn and M. Engelhardt and S. Krieg},
  journal= {arXiv preprint arXiv:1206.4527},
  year   = {2013}
}

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10 pages, 6 figures

Nucleon Scalar and Tensor Charges from Lattice QCD with Light Wilson Quarks

Abstract

Keywords

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