ThreeBodyDecays.jl is a Julia package for building hadronic decay models using a cascade reaction.
Decays with three particles is the main application of the approach, however, it is also found useful in multibody decays where transitions can be factorized to a product of sequential decays with
The implementation is based on a research paper, "Dalitz-plot decomposition for three-body decays" by JPAC Collaboration (M. Mikhasenko at al.) (inspire reference).
The code mostly inherits notations of the paper:
- Particles are numbered 1,2,3, and 0 for the decay products and the mother particle, respectively.
m0is a mass of the decay particle, andm1,m2,m3are masses the final-state particles.σis a two-particle invariant mass squared,σk = (pi+pj)²,θijis a scattering angle, an angle betweenvec piand- vec pk.ζ_kj_for_0is the Wigner angle of the 0-particle, an angle ofvec pⱼ+pⱼwith respect the the chainj.ζ_ij_for_kis the Wigner angle for the particlek(the angle in the rest frame of particlek) that is mismatched for the chainiwith respect to the chainj.
using Pkg
Pkg.add("ThreeBodyDecays")If you use ThreeBodyDecays.jl in your work, please cite using the reference given in CITATION.cff. The PRD101 (2020) 3, 034033 paper is available for academic citations.
If you want to make contributions of any kind, please first that a look into our contributing guide directly on GitHub or the contributing page on the website.