Separation of soft and collinear singularities from one-loop N-point integrals

Preprint

25 August 2003

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/0308246

Abstract

The soft and collinear singularities of general scalar and tensor one-loop N-point integrals are worked out explicitly. As a result a simple explicit formula is given that expresses the singular part in terms of 3-point integrals. Apart from predicting the singularities, this result can be used to transfer singular one-loop integrals from one regularization scheme to another or to subtract soft and collinear singularities from one-loop Feynman diagrams directly in momentum space.

Keywords

COLLINEAR SINGULARITIES
SOFT AND COLLINEAR
EXPLICIT FORMULA
POINT INTEGRALS
SIMPLE EXPLICIT
SINGULARITIES
LOOP N POINT

All Related Versions

Version 1, 2003-08-25, ArXiv
Published version: Nuclear Physics B, 675 (1-2), 447.

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