CALCULATING TWO- AND THREE-BODY DECAYS WITHFeynArtsANDFormCalc

Michael Klasen ()
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Michael Klasen: Laboratoire de Physique Subatomique et de Cosmologie, 53 Avenue des Martyrs, F-38026 Grenoble, France

International Journal of Modern Physics C (IJMPC), 2003, vol. 14, issue 09, 1273-1278

Abstract: The Feynman diagram generatorFeynArtsand the computer algebra programFormCalcallow for an automatic computation of 2→2 and 2→3 scattering processes in High Energy Physics. We have extended this package by four new kinematical routines and adapted one existing routine in order to accomodate also two- and three-body decays of massive particles. This makes it possible to compute automatically two- and three-body particle decay widths and decay energy distributions as well as resonant particle production within the Standard Model and the Minimal Supersymmetric Standard Model at the tree- and loop-level. The use of the program is illustrated with three standard examples:$h\to b\bar b$,$\mu\to e\bar \nu_e \nu_\mu$, and$Z\to \nu_e\bar \nu_e$.

Keywords: Feynman diagrams; perturbative calculations; decays (search for similar items in EconPapers)
Date: 2003
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DOI: 10.1142/S012918310300539X

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