论文标题
彩色偶极子图片的质子gluon分布
The Proton Gluon Distribution from the Color Dipole Picture
论文作者
论文摘要
通过使用色 - 偶极性图片（CDP）中深度非弹性电子蛋白散射（DIS）的实验数据的表示，我们确定了小bjorken $ x $的质子的Gluon分布。在足够大的动量转移，$ q^2 $，提取的gluon分布满足质子结构函数的标准进化方程。对于$ q^2 $的低值，例如对于$ q^2 = 1.9 {\ rm gev}^2 $，违反了质子结构函数的演变方程。采用低$ q^2 $开始量表以提取Gluon密度的标准程序值得怀疑，需要进一步研究。
Employing the representation of the experimental data on deep inelastic electron-proton scattering (DIS) in the color-dipole picture (CDP), we determine the gluon distribution of the proton at small Bjorken $x$. At sufficiently large momentum transfer, $Q^2$, the extracted gluon distribution fulfills the standard evolution equation for the proton structure function. For low values of $Q^2$, e.g. for $Q^2 = 1.9 {\rm GeV}^2$, the evolution equation for the proton structure function is violated. The standard procedure of adopting a low-$Q^2$ starting scale for the extraction of the gluon density is questionable and requires further investigations.
