Multi-gluon one-loop amplitudes numerically
arXiv:0812.2998
Abstract
A c++ implementation of the D_s-dimensional unitarity cut algorithm for the numerical evaluation of the virtual contribution to NLO QCD amplitudes is presented. The current version includes an arbitrary number of external gluons with gluonic propagators in the loop. The building blocks are tree level color-ordered amplitudes with gluons and with gluons and two scalars in five dimensions. Numerical stability issues are addressed and agreement has been reached with the results published in the literature.
17 pages, 3 figures
References in corpus (7)
- An Automated Implementation of On-Shell Methods for One-Loop Amplitudes
- Full one-loop amplitudes from tree amplitudes
- On the Rational Terms of the one-loop amplitudes
- Automation of the Dipole Subtraction Method in MadGraph/MadEvent
- TeVJet: A general framework for the calculation of jet observables in NLO QCD
- One-Loop Calculations with BlackHat
- On-Shell Unitarity Bootstrap for QCD Amplitudes