xFitter 2.0.0：重夸克匹配标度：统一FFNS和VFNS
xFitter 2.0.0: Heavy quark matching scales: Unifying the FFNS and VFNS
摘要：
xFitter是一个开源软件包，为量子色动力学（QCD）中许多不同类型的分析提供了一个确定质子部分子分布函数（PDF）的框架。它结合了来自广泛实验的实验数据，包括固定靶，Tevatron，HERA和LHC。xFitter 2.0.0版最近发布，提供了一组扩展的工具和选项。新的xFitter 2.0.0程序链接到APFEL代码，该代码实现了广义匹配条件，能够以任意匹配比例$μ_m$从$N_F$切换到$N_F+1$活性风味。这使我们能够概括FFNS和VFNS之间的过渡，并在两种方案之间连续变化;在这个意义上，匹配尺度$μ_m$使我们能够将FFNS和VFNS统一在一个共同的框架中。本文简要介绍了xFitter，重点介绍了这些新功能。
英文摘要：
xFitter is an open-source package that provides a framework for the determination of the parton distribution functions (PDFs) of the proton for many different kinds of analyses in Quantum Chromodynamics (QCD). It incorporates experimental data from a wide range of experiments including fixed-target, Tevatron, HERA, and LHC. xFitter version 2.0.0 has recently been released, and offers an expanded set of tools and options. The new xFitter 2.0.0 program links to the APFEL code which has implemented generalized matching conditions that enable the switch from $N_F$ to $N_F+1$ active flavors at an arbitrary matching scale $μ_m$. This enables us to generalize the transition between a FFNS and a VFNS and essentially vary continuously between the two schemes; in this sense the matching scale $μ_m$ allows us to unify the FFNS and VFNS in a common framework. This paper provides a brief overview of xFitter with emphasis of these new features.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
