TauDecay: a library to simulate polarized tau decays via FeynRules and MadGraph5

The European Physical Journal C

Tong Li¹  Junya Nakamura²  Kaoru Hagiwara²  Kentarou Mawatari³ 

[1] ARC Centre of Excellence for Particle Physics at the Terascale, School of Physics, Monash University, 3800, Melbourne, Victoria, Australia;KEK Theory Center, and Sokendai, 305-0801, Tsukuba, Japan;Theoretische Natuurkunde and IIHE/ELEM, Vrije Universiteit Brussel, and International Solvay Institutes, Pleinlaan 2, 1050, Brussels, Belgium;

关键词: Higgs Boson;    Light Supersymmetric Particle;    Helicity Amplitude;    Decay Amplitude;    Collinear Limit;   

DOI  :  10.1140/epjc/s10052-013-2489-4

来源: Springer

【 摘 要 】

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.

【 授权许可】

CC BY