Speakers
Description
Ideally, we describe amplitude models with recognizable mathematical expressions and directly fit those models to large data sample with high performance. The ComPWA project achieves this by formulating models with a Computer Algebra System and using its symbolic expression trees as a code generation template for fast, computational back-ends like JAX.
We present the latest features that have been implemented symbolically, in particular spin alignment for three-body decays using Dalitz-Plot Decomposition and K-matrix parametrizations for coupled channels, with interactive visualizations of Riemann sheets and resonance poles. These features illustrate how the symbolic approach results in a transparent, self-documenting workflow that is well-suited for performing high-performance computations such as amplitude analysis fits.
