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This commit adds eventdecayer_charmbaryon.cfg, which switches on the decays of Xi_c0, Xi_c+ and Omega_c0 for the EventDecayer.
- base.cfg keeps these charm baryons stable, because Geant4 hands them to the external decayer one at a time.
- The EventDecayer decays them before transport and keeps the full decay chain in the MC truth.
Usage: -confKey 'DecayerPythia8.config[1]=${O2DPG_MC_CONFIG_ROOT}/MC/config/PWGHF/pythia8/decayer/force_hadronic_charmbaryon.cfg;EventDecayer.enable=true;EventDecayer.config[2]=${O2DPG_MC_CONFIG_ROOT}/MC/config/PWGHF/pythia8/decayer/eventdecayer_charmbaryon.cfg'
AliceO2Group/AliceO2#15995
https://its.cern.ch/jira/browse/O2-5903
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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REQUEST FOR PRODUCTION RELEASES: This will add The following labels are available |
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This adds a small decay config,
eventdecayer_charmbaryon.cfg, that switches on the decays of Ξc⁰, Ξc⁺ and Ωc⁰ for the new decay step in event generation (EventDecayer, AliceO2Group/AliceO2#15995).base.cfgkeeps these charm baryons stable, because Geant4 hands them to the external decayer one at a time. With the decay step they are decayed before transport, and the full decay chain, including intermediate resonances such as Ξ(1530)⁰, K*⁰ and φ, is kept in the MC truth. The forced channels offorce_hadronic_charmbaryon*.cfgare used unchanged.Usage in a request:
Note that the file has no effect unless
EventDecayer.enable=trueis set, so nothing changes for existing requests.https://its.cern.ch/jira/browse/O2-5903
https://its.cern.ch/jira/browse/O2-7108
Assisted by Claude Code.