APFEL: A PDF evolution library with QED corrections

This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018) Abstract Quantum electrodynamics and electroweak corrections are important ingredients for many theoretical predictions at the LHC. This paper documents APFEL, a new PDF evolution package that allows for the first time to perform DGLAP evolution up to NNLO in QCD and to LO in QED, in the variable-flavor-number scheme and with either pole or MS heavy quark masses. APFEL consistently accounts for the QED corrections to the evolution of quark and gluon PDFs and for the contribution from the pho... Title of program: APFEL Catalogue Id: AESQ_v1_0 Nature of problem Solution of the unpolarized coupled DGLAP evolution equations up to NNLO in QCD and to LO in QED in the variable-flavor-number scheme, both with pole and with MSbar masses. Versions of this program held in the CPC repository in Mendeley Data AESQ_v1_0; APFEL; 10.1016/j.cpc.2014.03.007

本程序源自贝尔法斯特女王大学馆藏的CPC程序库（1969-2018年）。
**摘要**：量子电动力学（Quantum Electrodynamics, QED）与电弱修正，是大型强子对撞机（Large Hadron Collider, LHC）诸多理论预测的关键组成部分。本文详细介绍了APFEL这一全新的部分子分布函数（Parton Distribution Function, PDF）演化程序包：该程序首次实现可变味数方案下，量子色动力学（Quantum Chromodynamics, QCD）演化至次次领头阶（Next-to-Next-to-Leading Order, NNLO）、量子电动力学演化至领头阶（Leading Order, LO），且支持采用极点质量或MS̄重夸克质量方案开展计算。APFEL可统一处理夸克与胶子部分子分布函数演化过程中的QED修正，以及光子相关贡献……
**程序名称**：APFEL
**目录编号**：AESQ_v1_0
**问题本质**：在可变味数方案下，求解非极化耦合DGLAP（Dokshitzer-Gribov-Lipatov-Altarelli-Parisi）演化方程，实现QCD演化至NNLO、QED演化至LO，且同时支持极点质量与MS̄重夸克质量方案。
Mendeley Data中CPC存储库收录的该程序版本：AESQ_v1_0；APFEL；DOI：10.1016/j.cpc.2014.03.007