NEXT-TO-LEADING ORDER DETERMINATION OF THE SINGLET AXIAL CHARGE AND THE POLARIZED GLUON CONTENT OF THE NUCLEON
NEXT-TO-LEADING ORDER DETERMINATION OF THE SINGLET AXIAL CHARGE AND THE POLARIZED GLUON CONTENT OF THE NUCLEON
复制标题
核子单线态轴向电荷和极化胶子含量的次主导序测定
DOI：
10.1016/0370-2693(96)00376-0
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发表时间：
1995
影响因子：
4.4
通讯作者：
G. Ridolfi
中科院分区：
文献类型：
--
作者：
R. Ball;R. Ball;Stefano Forte;G. Ridolfi
我们对核子极化结构函数g1的现有实验数据进行了全面的次要分析，给出了它的单线态轴向电荷的精确测定，并对理论上的不确定度进行了彻底的评估。我们发现，现在的数据足以分别确定极化夸克和胶子分布的一阶矩，并特别表明胶子的贡献是大的和正的。
We perform a full next-to-leading analysis of the the available experimental data on the polarized structure function g1of the nucleon, and give a precise determination of its singlet axial charge together with a thorough assessment of the theoretical uncertainties. We find that the data are now sufficient to separately determine first moments of the polarized quark and gluon distributions, and show in particular that the gluon contribution is large and positive.