Separation of soft and collinear infrared limits of QCD squared matrix elements
arXiv:hep-ph/0702273
Abstract
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.
arXiv comment14 pages, 1 figure, references added
References in corpus (7)
- Three-jet cross sections to next-to-leading order
- Multi-Parton Amplitudes in Gauge Theories
- A general approach to jet cross sections in QCD
- Antenna subtraction with hadronic initial states
- Antenna Factorization of Gauge-Theory Amplitudes
- Multiple Singular Emission in Gauge Theories
- Calculation of QCD jet cross sections at next-to-leading order
Cited by in corpus (5)
- Antenna subtraction at NNLO with hadronic initial states: initial-final configurations
- Subtraction with hadronic initial states at NLO: an NNLO-compatible scheme
- Nagy-Soper subtraction scheme for multiparton final states
- Perturbation theory of computing QCD jet cross sections beyond NLO accuracy
- Subtraction method of computing QCD jet cross sections at NNLO accuracy