Techniques for one-loop tensor integrals in many-particle processes

A. Denner; S. Dittmaier

doi:10.1016/j.nuclphysbps.2006.03.008

Techniques for one-loop tensor integrals in many-particle processes

高能物理 - 唯象学 2008-11-26 v1

作者: A. Denner , S. Dittmaier

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摘要

We briefly sketch the methods for a numerically stable evaluation of tensor one-loop integrals that have been used in the calculation of the complete electroweak one-loop corrections to $\Pep\Pem\to4$ fermions. In particular, the improvement of the new methods over the conventional Passarino--Veltman reduction is illustrated for some 4-point integrals in the delicate limits of small Gram (and other kinematical) determinants.

关键词

loop integrals in quantum field theory radiative corrections in particle physics feynman integrals

引用

@article{arxiv.hep-ph/0601085,
  title  = {Techniques for one-loop tensor integrals in many-particle processes},
  author = {A. Denner and S. Dittmaier},
  journal= {arXiv preprint arXiv:hep-ph/0601085},
  year   = {2008}
}

备注

5 pages, latex, 2 postscript figures, to appear in the proceedings of the "7th International Symposium on Radiative Corrections (RADCOR2005)", Shonan Village, 2005

Techniques for one-loop tensor integrals in many-particle processes

摘要

关键词

引用

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