HELAC: A package to compute electroweak helicity amplitudes. HELAC is a FORTRAN based package that is able to compute efficiently helicity amplitudes for arbitrary scattering processes within the standard electroweak theory. The algorithm exploits the virtues of the Dyson-Schwinger equations as compared to the traditional Feynman graph approach. All electroweak vertices are included in both the unitary and Feynman gauges, and computations including all mass effects are available. A version performing multi-precision computations with arbitrary – user defined – accuracy is also included, allowing access to any phase space point for arbitrary high energies.

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  1. Denner, Ansgar; Dittmaier, Stefan: Electroweak radiative corrections for collider physics (2020)
  2. Sjodahl, Malin; Thorén, Johan: QCD multiplet bases with arbitrary parton ordering (2018)
  3. Bury, M.; van Hameren, A.: Numerical evaluation of multi-gluon amplitudes for high energy factorization (2015)
  4. Alwall, J.; Frederix, R.; Frixione, S.; Hirschi, V.; Maltoni, F.; Mattelaer, O.; Shao, H.-S.; Stelzer, T.; Torrielli, P.; Zaro, M.: The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations (2014)
  5. Belyaev, Alexander; Christensen, Neil D.; Pukhov, Alexander: CalcHEP 3.4 for collider physics within and beyond the standard model (2013)
  6. Shao, Hua-Sheng: HELAC-Onia: an automatic matrix element generator for heavy quarkonium physics (2013)
  7. Ita, Harald; Ozeren, Kemal: Colour decompositions of multi-quark one-loop QCD amplitudes (2012)
  8. Shao, Hua-Sheng; Zhang, Yu-Jie: Feynman rules for the rational part of one-loop QCD corrections in the MSSM (2012)
  9. Worek, Malgorzata: On the next-to-leading order QCD ( \mathcalK)-factor for ( t\overlinet b\overlineb ) production at the TeVatron (2012)
  10. Calame, C. Carloni; Czyż, H.; Gluza, J.; Gunia, M.; Montagna, G.; Nicrosini, O.; Piccinini, F.; Riemann, T.; Worek, M.: NNLO leptonic and hadronic corrections to Bhabha scattering and luminosity monitoring at meson factories (2011)
  11. Chung, C. H.; Krämer, Michael; Robens, T.: An alternative subtraction scheme for next-to-leading order QCD calculations (2011)
  12. Czakon, M.: Double-real radiation in hadronic top quark pair production as a proof of a certain concept (2011)
  13. Dixon, Lance J.; Henn, Johannes M.; Plefka, Jan; Schuster, Theodor: All tree-level amplitudes in massless QCD (2011)
  14. Ita, Harald: Susy theories and QCD: numerical approaches (2011)
  15. Papadopoulos, Costas G.: Loop QCD (2011)
  16. Balossini, Giovanni; Montagna, Guido; Carloni Calame, Carlo Michel; Moretti, Mauro; Nicrosini, Oreste; Piccinini, Fulvio; Treccani, Michele; Vicini, Alessandro: Combination of electroweak and QCD corrections to single (W) production at the fermilab tevatron and the CERN LHC (2010)
  17. Becker, Sebastian; Reuschle, Christian; Weinzierl, Stefan: Numerical NLO QCD calculations (2010)
  18. Belov, S.; Dudko, L.; Kekelidze, D.; Sherstnev, A.: HepML, an XML-based format for describing simulated data in high energy physics (2010)
  19. Giele, Walter T.; Kunszt, Zoltan; Winter, Jan: Efficient color-dressed calculation of virtual corrections (2010)
  20. Heinrich, G.; Ossola, G.; Reiter, T.; Tramontano, F.: Tensorial reconstruction at the integrand level (2010)

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