Particle Physics
部分子分布函数
Parton distribution functionsParton distribution functions (PDFs) describe the probability density of finding a parton (quark or gluon) with a given momentum fraction inside a hadron. They are fundamental inputs for perturbative QCD calculations in high-energy scattering processes. / 部分子分布函数（PDF）描述了在强子内部找到具有特定动量分数的部分子（夸克或胶子）的概率密度。它们是高能散射过程中微扰QCD计算的基本输入。
- Knowledge type
- 自然理论
- First proposed or discovered
- Proposer
- Turkey Farm member
- Creator
- 农场主
- Last updated
- 2026-10-26 21:01:22
Sub-knowledge points
Quark distributionsGluon distributionsHeavy quark distributions
Higher-order knowledge points
Quantum Chromodynamics (QCD)Deep Inelastic Scattering (DIS)Asymptotic Freedom
Main parameters and performance indicators
x: Momentum fraction of the partonQ^2: Energy scale of the hard scattering process
Open problems
Extraction from global PDF fitsSmall-x behavior and saturationNon-perturbative modeling at low Q^2
Related literature
ranked by community starsParton distribution functions and strong coupling constant: MSHTOpen source
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1 recordsRecord title: Parton distribution functions.
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