Separation of soft and collinear infrared limits of QCD squared matrix elements

Details Separation of soft and collinear infrared limits of QCD squared matrix elements Separation of soft and collinear infrared limits of QCD squared matrix elements

2007-02-27

arxiv.org/abs/hep-ph/0702273v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 1 figure, references added

Scientific paper

We present a simple way of separating the overlap between the soft and collinear factorization formulae of QCD squared matrix elements. We check its validity explicitly for single and double unresolved emissions of tree-level processes. The new method makes possible the definition of helicity-dependent subtraction terms for regularizing the real contributions in computing radiative corrections to QCD jet cross sections. This implies application of Monte Carlo helicity summation in computing higher order corrections.

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