来自晶格量子色动力学的核子部分子分布的横向结构。
Transverse structure of nucleon parton distributions from lattice QCD.
作者信息
Hägler Ph, Negele J W, Renner D B, Schroers W, Lippert Th, Schilling K
机构信息
Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
出版信息
Phys Rev Lett. 2004 Sep 10;93(11):112001. doi: 10.1103/PhysRevLett.93.112001. Epub 2004 Sep 9.
This work presents the first calculation in lattice QCD of three moments of spin-averaged and spin-polarized generalized parton distributions in the proton. It is shown that the slope of the associated generalized form factors decreases significantly as the moment increases, indicating that the transverse size of the light-cone quark distribution decreases as the momentum fraction of the struck parton increases.
这项工作展示了在格点量子色动力学中对质子内自旋平均和自旋极化的广义部分子分布的三个矩的首次计算。结果表明，随着矩的增加，相关广义形状因子的斜率显著减小，这表明随着被撞击部分子的动量分数增加，光锥夸克分布的横向尺寸减小。
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