Numerical NLO QCD calculations
arXiv:1010.4187 · doi:10.1007/JHEP12(2010)013
Abstract
We present an algorithm for the numerical calculation of one-loop QCD amplitudes. The algorithm consists of subtraction terms, approximating the soft, collinear and ultraviolet divergences of one-loop amplitudes and a method to deform the integration contour for the loop integration into the complex space. The algorithm is formulated at the amplitude level and does not rely on Feynman graphs. Therefore all required ingredients can be calculated efficiently using recurrence relations. The algorithm applies to massless partons as well as to massive partons.
62 pages, version to be published
References in corpus (38)
- Reducing full one-loop amplitudes to scalar integrals at the integrand level
- An Automated Implementation of On-Shell Methods for One-Loop Amplitudes
- Factorization constraints for soft anomalous dimensions in QCD scattering amplitudes
- Direct extraction of one-loop integral coefficients
- Full one-loop amplitudes from tree amplitudes
- Assault on the NLO Wishlist: pp -> tt bb
- A Numerical Unitarity Formalism for Evaluating One-Loop Amplitudes
- On the Rational Terms of the one-loop amplitudes
- Precise Predictions for W + 4 Jet Production at the Large Hadron Collider
- D-dimensional unitarity cut method
- NLO QCD corrections to t tbar + jet production at hadron colliders
- Automating dipole subtraction for QCD NLO calculations
- Next-to-Leading Order QCD Predictions for W+3-Jet Distributions at Hadron Colliders
- NLO QCD corrections to pp -> t anti-t b anti-b + X at the LHC
- Next-to-leading-order predictions for t-channel single-top production at hadron colliders
- Next-to-Leading order Higgs + 2 jet production via gluon fusion
- Next-to-leading order QCD corrections to t-tbar-Z production at the LHC
- Polarizing the Dipoles
- Automation of the Dipole Subtraction Method in MadGraph/MadEvent
- NLO QCD corrections to tri-boson production
- W+3 jet production at the Tevatron
- Numerical integration of one-loop Feynman diagrams for N-photon amplitudes
- Hadronic top-quark pair production in association with a hard jet at next-to-leading order QCD: Phenomenological studies for the Tevatron and the LHC
- QCD corrections to tri-boson production
- Next-to-leading order QCD corrections to W+Z and W-Z production via vector-boson fusion
- Next-to-leading order QCD corrections to Z boson pair production via vector-boson fusion
- Next-to-leading order QCD corrections to W+W- production via vector-boson fusion
- QCD corrections to hadronic WWZ production with leptonic decays
- NLO QCD corrections to WW+jet production at hadron colliders
- QCD corrections to charged triple vector boson production with leptonic decay
- Optimizing the Reduction of One-Loop Amplitudes
- Next-to-Leading-Order QCD corrections to J/ψ(Υ)+γproduction at the LHC
- Next-to-leading order predictions for WW + 1 jet distributions at the LHC
- Production of a W boson and two jets with one b-quark tag
- A comparison of efficient methods for the computation of Born gluon amplitudes
- One-loop Integral Coefficients from Generalized Unitarity
- TeVJet: A general framework for the calculation of jet observables in NLO QCD
- Formulae for a numerical computation of one-loop tensor integrals