NGluon: A package to calculate one-loop multi-gluon amplitudes. We present a computer library for the numerical evaluation of colour-ordered n-gluon amplitudes at one-loop order in pure Yang--Mills theory. The library uses the recently developed technique of generalised unitarity. Running in double precision the library yields reliable results for up to 14 gluons with only a small fraction of events requiring a re-evaluation using extended floating point arithmetic. We believe that the library presented here provides an important contribution to future LHC phenomenology. The program may also prove useful in cross checking results obtained by other methods. In addition, the code provides a sample implementation which may serve as a starting point for further developments.

References in zbMATH (referenced in 18 articles , 1 standard article )

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  1. Denner, Ansgar; Dittmaier, Stefan: Electroweak radiative corrections for collider physics (2020)
  2. Chen, Gang; Liu, Junyu; Xie, Ruofei; Zhang, Hao; Zhou, Yehao: Syzygies probing scattering amplitudes (2016)
  3. Hirschi, Valentin; Peraro, Tiziano: Tensor integrand reduction via Laurent expansion (2016)
  4. Ievgen Dubovyk, Janusz Gluza, Tord Riemann, Johann Usovitsch: Numerical integration of massive two-loop Mellin-Barnes integrals in Minkowskian regions (2016) arXiv
  5. Johansson, Henrik; Ochirov, Alexander: Color-kinematics duality for QCD amplitudes (2016)
  6. Peraro, Tiziano: Scattering amplitudes over finite fields and multivariate functional reconstruction (2016)
  7. Peraro, Tiziano: Ninja: automated integrand reduction via Laurent expansion for one-loop amplitudes (2014)
  8. Søgaard, Mads: Global residues and two-loop hepta-cuts (2013)
  9. Søgaard, Mads; Zhang, Yang: Multivariate residues and maximal unitarity (2013)
  10. Badger, Simon; Frellesvig, Hjalte; Zhang, Yang: Hepta-cuts of two-loop scattering amplitudes (2012)
  11. Boels, Rutger H.; Isermann, Reinke Sven: Yang-Mills amplitude relations at loop level from non-adjacent BCFW shifts (2012)
  12. Ita, Harald; Ozeren, Kemal: Colour decompositions of multi-quark one-loop QCD amplitudes (2012)
  13. Mastrolia, Pierpaolo; Mirabella, Edoardo; Peraro, Tiziano: Integrand reduction of one-loop scattering amplitudes through Laurent series expansion (2012)
  14. Pittau, R.: Primary Feynman rules to calculate the (\epsilon)-dimensional integrand of any 1-loop amplitude (2012)
  15. Ridder, Aude Gehrmann-De; Glover, E. W. N.; Pires, Joao: Real-virtual corrections for gluon scattering at NNLO (2012)
  16. Zhang, Yang: Integrand-level reduction of loop amplitudes by computational algebraic geometry methods (2012)
  17. Badger, S.; Biedermann, B.; Uwer, P.: \textttNGluon: A package to calculate one-loop multi-gluon amplitudes (2011)
  18. Bjerrum-Bohr, N. E. J.; Damgaard, P. H.; Johansson, H.; Søndergaard, T.: Monodromy-like relations for finite loop amplitudes (2011)