三圈修正对深度非弹性散射数据QCD分析的影响
高能物理 - 唯象学
2015-06-25 v2
摘要
我们在NNLO QCD近似下对现有的包容性深度非弹性散射（DIS）数据进行了分析。获得了部子分布函数（PDFs）以及强耦合常数值。分析了PDFs对分裂函数NNLO修正值不确定性的敏感度。结果表明，在现有DIS数据所跨越的区域内，由该不确定性导致的PDFs误差通常小于PDFs的实验不确定性。
引用
@article{arxiv.hep-ph/0107197,
title = {Impact of the three-loop corrections on the QCD analysis of the deep-inelastic-scattering data},
author = {Alekhin Sergey},
journal= {arXiv preprint arXiv:hep-ph/0107197},
year = {2015}
}
备注
9 pages, LATEX, 4 figures (EPS). After fixing bug, which caused incomplete account of the NNLO corrections in the fitting program, the fitted value of \alpha_s(M_Z)(NNLO) decreased by 0.002. The PDFs values changed within their experimental errors, the conclusions remain unchanged