The non-singlet QCD evolution kernels improved by renormalon chain contributions

S. V. Mikhailov

The non-singlet QCD evolution kernels improved by renormalon chain contributions

高能物理 - 唯象学 2007-05-23 v1

作者: S. V. Mikhailov

摘要

Closed expressions are presented for the contributions to QCD non-singlet forward evolution kernels $P(z)$ for the DGLAP equation and to $V(x,y)$ for non-forward (ER-BL) evolution equation for a certain class of diagrams which include renormalon chains. Calculations are performed in covariant $\xi$ -gauge, in the \MSbar scheme. The assumption of "naive nonabelianization" approximation for kernel calculations is discussed, and a special choice of the gauge parameter $\xi=-3$ is analyzed in this context. Partial solutions to the ER-BL evolution equation are obtained.

关键词

perturbative qcd evolution

引用

@article{arxiv.hep-ph/9809299,
  title  = {The non-singlet QCD evolution kernels improved by renormalon chain contributions},
  author = {S. V. Mikhailov},
  journal= {arXiv preprint arXiv:hep-ph/9809299},
  year   = {2007}
}

备注

talk presented at Quarks'98, 10 pages, LaTeX 2-eps, 1 Table, 1 figure is included into the tex-file, 1 figure is added as ps-file

The non-singlet QCD evolution kernels improved by renormalon chain contributions

摘要

关键词

引用

备注

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