中文

来自格点QCD的核子自旋结构:味单态轴矢量和张量荷

高能物理 - 格点 2009-10-30 v1

摘要

在格点QCD中计算了核子的味单态轴矢量和张量荷。对于轴矢量荷,我们发现ΔΣ=Δu+Δd+Δs=+0.638(54)0.347(46)0.109(30)=+0.18(10)\Delta\Sigma=\Delta u+\Delta d+\Delta s=+0.638(54)-0.347(46)-0.109(30) = +0.18(10);对于张量荷,δΣ=δu+δd+δs=+0.839(60)0.231(55)0.046(34)=+0.562(88)\delta\Sigma=\delta u+\delta d+\delta s=+0.839(60)-0.231(55)-0.046(34) = +0.562(88)。轴矢量荷的结果与实验合理一致,而张量荷的结果是实验测量前来自格点QCD的首次预测。

关键词

引用

@article{arxiv.hep-lat/9711015,
  title  = {Nucleon Spin Structures from Lattice QCD: Flavor Singlet Axial and Tensor Charges},
  author = {Yoshinobu Kuramashi},
  journal= {arXiv preprint arXiv:hep-lat/9711015},
  year   = {2009}
}

备注

10 pages, latex source-file, 5 figures as epsf-file, uses espcrc1.sty. Invited talk at the International Conference on Quark Lepton Nuclear Physics, 20-23 May 1997, Osaka, Japan