论文标题
重型夸克电流的三环非单词匹配系数
Three-loop non-singlet matching coefficients for heavy quark currents
论文作者
论文摘要
我们计算了外部向量，轴向矢量，标量和伪量表电流之间的QCD和非相关性QCD之间的匹配系数，最高为三环阶。我们专注于非单词贡献，并以大约十位数字的精度呈现精确的数值结果。对于矢量电流，确认了Arxiv：1401.3004的结果，将精度提高了几个数量级。
We compute the matching coefficients between QCD and non-relativistic QCD for external vector, axial-vector, scalar and pseudo-scalar currents up to three-loop order. We concentrate on the non-singlet contributions and present precise numerical results with an accuracy of about ten digits. For the vector current the results from arXiv:1401.3004 are confirmed, increasing the accuracy by several orders of magnitude.
