How to calculate colourful cross sections efficiently
arXiv:0808.3672
Abstract
Different methods for the calculation of cross sections with many QCD particles are compared. To this end, CSW vertex rules, Berends-Giele recursion and Feynman-diagram based techniques are implemented as well as various methods for the treatment of colours and phase space integration. We find that typically there is only a small window of jet multiplicities, where the CSW technique has efficiencies comparable or better than both of the other two methods.
References in corpus (11)
- New Recursion Relations for Tree Amplitudes of Gluons
- Multi-Parton Amplitudes in Gauge Theories
- MHV Vertices And Tree Amplitudes In Gauge Theory
- New Color Decompositions for Gauge Amplitudes at Tree and Loop Level
- SHERPA 1.alpha, a proof-of-concept version
- Calculating Scattering Amplitudes Efficiently
- Weight optimization in multichannel Monte Carlo
- Vegas Revisited: Adaptive Monte Carlo Integration Beyond Factorization
- Color-dressed recursive relations for multi-parton amplitudes
- A comparison of efficient methods for the computation of Born gluon amplitudes
- SARGE: an algorithm for generating QCD-antennas