decaylanguage

Use when working with particle decay chains in Python: parsing EvtGen or DecFiles .dec decay descriptors with DecFileParser, building DecayChain and DecayMode objects programmatically, visualizing decay trees with DecayChainViewer, computing visible branching fractions, or converting AmpGen amplitude models to GooFit format. Also use when looking up LHCb or Belle II bundled decay tables, handling charge-conjugate decays, or filtering decay chains by minimum effective branching fraction.