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. Hahn, Thomas: Computer algebra in high-energy physics (invited talk) (2016)
  2. Belyaev, Alexander; Christensen, Neil D.; Pukhov, Alexander: CalcHEP 3.4 for collider physics within and beyond the standard model (2013)
  3. Shao, Hua-Sheng: HELAC-Onia: an automatic matrix element generator for heavy quarkonium physics (2013)
  4. Ita, Harald; Ozeren, Kemal: Colour decompositions of multi-quark one-loop QCD amplitudes (2012)
  5. Worek, Malgorzata: On the next-to-leading order QCD $ \mathcalK $-factor for $ t\overline t b\overline b $ production at the TeVatron (2012)
  6. 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)
  7. Chung, C.H.; Krämer, Michael; Robens, T.: An alternative subtraction scheme for next-to-leading order QCD calculations (2011)
  8. Czakon, M.: Double-real radiation in hadronic top quark pair production as a proof of a certain concept (2011)
  9. Dixon, Lance J.; Henn, Johannes M.; Plefka, Jan; Schuster, Theodor: All tree-level amplitudes in massless QCD (2011)
  10. Ita, Harald: Susy theories and QCD: numerical approaches (2011)
  11. Papadopoulos, Costas G.: Loop QCD (2011)
  12. 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)
  13. Becker, Sebastian; Reuschle, Christian; Weinzierl, Stefan: Numerical NLO QCD calculations (2010)
  14. Belov, S.; Dudko, L.; Kekelidze, D.; Sherstnev, A.: HepML, an XML-based format for describing simulated data in high energy physics (2010)
  15. Giele, Walter T.; Kunszt, Zoltan; Winter, Jan: Efficient color-dressed calculation of virtual corrections (2010)
  16. Heinrich, G.; Ossola, G.; Reiter, T.; Tramontano, F.: Tensorial reconstruction at the integrand level (2010)
  17. Mastrolia, P.; Ossola, G.; Reiter, T.; Tramontano, F.: Scattering amplitudes from unitarity-based reduction algorithm at the integrand-level (2010)
  18. Karol Kolodziej: carlomat, A program for automatic computation of lowest order cross sections (2009) arXiv
  19. Ma^ıtre, D.; Mastrolia, P.: S@M, a Mathematica implementation of the spinor-helicity formalism (2008)
  20. Bern, Zvi; Dixon, Lance J.; Kosower, David A.: On-shell methods in perturbative QCD (2007)

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