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HELAC: A package to compute electroweak helicity amplitudes. (English) Zbl 1031.81507
Summary: 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.

MSC:
81-08 Computational methods for problems pertaining to quantum theory
81V15 Weak interaction in quantum theory
Software:
Algorithm 693; HELAC
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References:
[1] Caravaglios, F.; Moretti, M., Phys. lett. B, 358, 332, (1995)
[2] Beenakker, W.; Berends, F.A.; Chapovsky, A.P.; Passarino, G., Unstable particles and non-conserved currents: A generalization of the fermion-loop scheme
[3] Denner, A., Fortsch. phys., 41, 307, (1993)
[4] Smith, D.M., ACM trans. math. software, 17, 273-283, (1991)
[5] Stelzer, T.; Long, W.F., Comput. phys. commun., 81, 357, (1994)
[6] Berends, F.A.; Pittau, R.; Kleiss, R.; Berends, F.A.; Pittau, R.; Kleiss, R., Comput. phys. commun., Nucl. phys. B, 424, 308, (1994)
[7] Itzykson, C.; Zuber, J.B., Quantum field theory, (1980), McGraw-Hill New York · Zbl 0453.05035
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