https://doi.org/10.1140/epjc/s10052-013-2489-4
Special Article - Tools for Experiment and Theory
TauDecay: a library to simulate polarized tau decays via FeynRules and MadGraph5
1
KEK Theory Center, and Sokendai, 305-0801, Tsukuba, Japan
2
ARC Centre of Excellence for Particle Physics at the Terascale, School of Physics, Monash University, 3800, Melbourne, Victoria, Australia
3
Theoretische Natuurkunde and IIHE/ELEM, Vrije Universiteit Brussel, and International Solvay Institutes, Pleinlaan 2, 1050, Brussels, Belgium
Received:
21
January
2013
Revised:
26
May
2013
Published online:
12
July
2013
TauDecay is a library of helicity amplitudes to simulate polarized tau decays, constructed in the FeynRules and MadGraph5 framework. Together with the leptonic mode, the decay library includes the main hadronic modes, τ→ντ+π, 2π, and 3π, which are introduced as effective vertices by using FeynRules. The model file allows us to simulate tau decays when the on-shell tau production is kinematically forbidden. We also demonstrate that all possible correlations among the decay products of pair-produced taus through a Z boson and a scalar/pseudoscalar Higgs boson are produced automatically. The program has been tested carefully by making use of the standard tau decay library Tauola.
Key words: Higgs Boson / Light Supersymmetric Particle / Helicity Amplitude / Decay Amplitude / Collinear Limit
© The Author(s) 2013
Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
