论文标题
质子中的偏光性GLUON分布来自全息光前QCD
Polarized gluon distribution in the proton from holographic light-front QCD
论文作者
论文摘要
我们获得了扩展的光前全息QCD框架中质子中质子的Gluon Parton分布函数（PDFS），其中质子与抗De保健空间中的Spin-Two Pomeron伴侣以及由委内易斯尼西亚诺模型强加的约束。在满足大小纵向动量区域的扰动QCD约束之后，Gluon螺旋不对称与现有的实验测量相吻合。极化的Gluon分布与全球分析一致。我们预测GLUON螺旋性对质子自旋的贡献，$ΔG= 0.221^{+0.056} _ { - 0.044} $，接近最近的分析，并使用更新的数据集和Phenix测量以及lattice QCD模拟。随后，我们介绍了质子中的非极化和极化的Gluon普通Parton分布。
We obtain the gluon parton distribution functions (PDFs) in the proton within the extended light-front holographic QCD framework, where the proton couples with the spin-two Pomeron in Anti-de Sitter space, together with constraints imposed by the Veneziano model. The gluon helicity asymmetry, after satisfying the perturbative QCD constraints at small and large longitudinal momentum regions, agrees with existing experimental measurements. The polarized gluon distribution is consistent with global analyses. We predict the gluon helicity contribution to the proton spin, $ΔG=0.221^{+0.056}_{-0.044}$, close to the recent analysis with updated data sets and PHENIX measurement and the lattice QCD simulations. We subsequently present the unpolarized and polarized gluon generalized parton distributions in the proton.
