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  1. Pubblicazioni

CutTools: a program implementing the OPP reduction method to compute one-loop amplitudes

Articolo
Data di Pubblicazione:
2008
Abstract:
We present a program that implements the OPP reduction method to extract the coefficients of the one-loop scalar integrals from a user defined (sub)-amplitude or Feynman Diagram, as well as the rational terms coming from the 4-dimensional part of the numerator. The rational pieces coming from the epsilon-dimensional part of the numerator are treated as an external input, and can be computed with the help of dedicated tree-level like Feynman rules. Possible numerical instabilities are dealt with the help of arbitrary precision routines, that activate only when needed.
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
G. Ossola; C. G. Papadopoulos; R. Pittau
Link alla scheda completa:
https://iris.unito.it/handle/2318/45725
Pubblicato in:
JOURNAL OF HIGH ENERGY PHYSICS
Journal
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