Towards a Global QCD Analysis of Fragmentation Functions at Next-to-Next-to-Leading Order Accuracy.
Towards a Global QCD Analysis of Fragmentation Functions at Next-to-Next-to-Leading Order Accuracy.
复制标题
对碎片函数进行全局 QCD 分析，精度接近次高。
DOI：
10.1103/physrevlett.129.012002
复制
发表时间：
2022
影响因子：
8.6
通讯作者：
W. Vogelsang
中科院分区：
文献类型：
--
作者：
I. Borsa;R. Sassot;D. de Florian;M. Stratmann;W. Vogelsang
我们通过对单包含电子-正电子湮没和首次半包含深度非弹性散射多重数数据的组合数据的拟合，以次要次要顺序(NNLO)精度对部分子到π碎裂函数进行了全局QCD分析。对于后者，我们利用了最近在阈值恢复形式下得到的近似的NNLO QCD修正。我们探讨了NNLO修正对描述不同运动学状态下的半包含型深度非弹性散射数据集的影响，以及对由此产生的介子碎裂函数的影响。
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 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 semi-inclusive deep-inelastic scattering datasets in various kinematic regimes and on the resulting pion fragmentation functions.
影响因子：
2.8
作者：
Almasy, A. A.;Moch, S.;Vogt, A.
通讯作者：
Vogt, A.