论文标题
在近代到领先的订单准确性下进行碎片函数的全局QCD分析
Towards a Global QCD Analysis of Fragmentation Functions at Next-To-Next-To-Leading Order Accuracy
论文作者
论文摘要
我们通过对单一包含的单包式电子 - 能力歼灭的组合进行拟合，并在第一次，第一次，半包含的深层弹性散射（Sidis）多重数据来执行拟合组合的单一含量电子含量（NNLO）的精度，对Parton-Pion碎片函数进行全球QCD分析。对于后者，我们利用了最近在阈值重新召集形式主义中得出的近似NNLO QCD校正。我们探讨了NNLO校正对各种运动学制度中SIDIS数据集的描述以及所得的Pion碎片函数的影响。
We carry out a global QCD analysis of parton-to-pion fragmentation functions at next-to-next-to-leading order (NNLO) accuracy by performing a fit to the combined set of single-inclusive electron-positron annihilation and, for the first time, semi-inclusive deep-inelastic scattering (SIDIS) multiplicity data. For the latter, we utilize the approximate NNLO QCD corrections that were derived recently within the threshold resummation formalism. We explore the impact of the NNLO corrections on the description of the SIDIS data sets in various kinematic regimes and on the resulting pion fragmentation functions.
