论文标题
大量动量转移时重力形式因素的扰动计算
Perturbative Calculations of Gravitational Form Factors at Large Momentum Transfer
论文作者
论文摘要
我们对大动量转移的核子的重力形式（GFF）进行扰动QCD分析。我们根据twist-3和twist-4灯锥分布的核子的明确分解公式的显式分解公式。这些GFF的功率行为是从领先的顺序计算中获得的。夸克和Gluon对各种GFF的贡献的数字结果呈现出文献中分布幅度的模型假设。我们还介绍了标量形式$ \ langle p'| f^2 |的扰动计算。 p \ rangle $用于大量动量转移时质子和质子。
We perform a perturbative QCD analysis of the gravitational form factors (GFFs) of nucleon at large momentum transfer. We derive the explicit factorization formula of the GFFs in terms of twist-3 and twist-4 light-cone distribution amplitudes of nucleon. Power behaviors for these GFFs are obtained from the leading order calculations. Numeric results of the quark and gluon contributions to various GFFs are presented with model assumptions for the distribution amplitudes in the literature. We also present the perturbative calculations of the scalar form factor $\langle P'|F^2| P\rangle$ for pion and proton at large momentum transfer.
