English

Subtraction terms for one-loop amplitudes with one unresolved parton

High Energy Physics - Phenomenology 2009-11-10 v1

Abstract

Fully differential next-to-next-to-leading order calculations require a method to cancel infrared singularities. In a previous publication, I discussed the general setup for the subtraction method at NNLO. In this paper I give all subtraction terms for electron-positron annihilation associated with one-loop amplitudes with one unresolved parton. These subtraction terms are integrated within dimensional regularization over the unresolved one-particle phase space. The results can be used with all variants of dimensional regularization (conventional dimensional regularization, the 't Hooft-Veltman scheme and the four-dimensional scheme).

Keywords

Cite

@article{arxiv.hep-ph/0306248,
  title  = {Subtraction terms for one-loop amplitudes with one unresolved parton},
  author = {Stefan Weinzierl},
  journal= {arXiv preprint arXiv:hep-ph/0306248},
  year   = {2009}
}

Comments

27 pages

R2 v1 2026-07-22T13:48:36.800Z