Calculation of Massive 2-Loop Operator Matrix Elements with Outer Gluon Lines

I. Bierenbaum; J. Blümlein; S. Klein

doi:10.1016/j.physletb.2007.02.059

Calculation of Massive 2-Loop Operator Matrix Elements with Outer Gluon Lines

高能物理 - 唯象学 2008-11-26 v1

作者: I. Bierenbaum , J. Blümlein , S. Klein

在 arXiv 上查看 ↗ PDF ↗ DOI ↗

摘要

Massive on-shell operator matrix elements and self-energy diagrams with outer gluon lines are calculated analytically at $O(\alpha_s^2)$ , using Mellin-Barnes integrals and representations through generalized hypergeometric functions. This method allows for a direct evaluation without decomposing the integrals using the integration-by-parts method.

关键词

loop integrals in quantum field theory operator theory and quantum mechanics

引用

@article{arxiv.hep-ph/0702265,
  title  = {Calculation of Massive 2-Loop Operator Matrix Elements with Outer Gluon Lines},
  author = {I. Bierenbaum and J. Blümlein and S. Klein},
  journal= {arXiv preprint arXiv:hep-ph/0702265},
  year   = {2008}
}

备注

1 Latex file, 1 style file, 3 figures

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