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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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Hi @sawenzel the PR looks good to me, but it fails for unrelated problems in the simulation tests against CVMFS (problems in getting the alien token), would it be possible to merge it or to restart the test? Thanks! |
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.