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Explain which particles the decay step leaves to Geant4 - #65
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This commit adds a section on which particles the EventDecayer decays and why long-lived strange hadrons stay with Geant4. - base.cfg and the default tau0Max both keep K0S, Lambda, Sigma, Xi and Omega undecayed; requests need no limitTau0 lines. - Decaying them in the generator is only meant for studies without transport. - Charm baryons are switched on with eventdecayer_charmbaryon.cfg from O2DPG. - The partonic-decay note now covers Pythia8 versions that hadronise such decays. - Checking the decay origin in an AOD uses producedByGenerator(). https://its.cern.ch/jira/browse/O2-5903 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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This adds a section to the "Decays before transport" page on which particles the decay step decays, following a question from a user testing it in an HF production.
It explains that K0S, Λ, Σ±, Ξ and Ω are never decayed by the step (they are stable in
base.cfg, and the defaulttau0Maxof 10 mm/c excludes them as well), so requests need nolimitTau0lines, and why decaying them in the generator is only meant for studies without transport. It also shows how charm baryons are switched on witheventdecayer_charmbaryon.cfg(AliceO2Group/O2DPG#2518), updates the partonic-decay note for recent Pythia8 versions, and says how to check the decay origin in an AOD.https://its.cern.ch/jira/browse/O2-5903
Assisted by Claude Code.