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spucillo merged 1 commit into from
Nov 14, 2026
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[Tutorial,PWGLF] [MegaLinter] Apply linters automatic fixes to #18740 #22

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30 changes: 15 additions & 15 deletions Tutorials/PWGLF/Strangeness/Derived/AnalysisV0/README.md
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Expand Up @@ -67,24 +67,24 @@ TASK=o2-analysistutorial-lf-strangeness-derived-v0-skeleton ./runStep1.sh

Without `TASK=...` the checkpoint of the step is run: useful to compare with your results.

| Step | What is added | Tables | What to look at |
|---|---|---|---|
| skeleton | loop over events, sel8, \|z\| < 10 cm | `StraCollisions`, `StraEvSels` | `eventSelection/hVertexZRec` |
| 0 | loop over V0s, K0S, Λ, Λbar invariant masses | `V0Cores` | `kzeroShort/hMassK0Short`, `lambda/hMassLambda` |
| 1 | topological selections (`Filter` + dynamic columns), rapidity, competing mass rejection | `V0Cores` | `hMass*Selected`, `hV0CosPA`, `hV0Radius` |
| 2 | TPC PID of the daughters (`posTrackExtra_as<>`) | `V0Extras`, `DauTrackExtras`, `DauTrackTPCPIDs` | `hNSigmaPos/NegPionFromK0s`, `hMass*Selected` |
| 3 | TOF PID optimised for secondary particles (`strangenesstofpid` task) | `V0TOFNSigmas` | `hMass*SelectedWithTOF` |
| 4 | MC truth: true reconstructed and generated V0s | `V0CoreMCLabels`, `V0MCCores`, `V0MCCollRefs` | `hPt*TrueRec`, `genParticles/hPt*Gen` |
| Step | What is added | Tables | What to look at |
|----------|-----------------------------------------------------------------------------------------|-------------------------------------------------|-------------------------------------------------|
| skeleton | loop over events, sel8, \|z\| < 10 cm | `StraCollisions`, `StraEvSels` | `eventSelection/hVertexZRec` |
| 0 | loop over V0s, K0S, Λ, Λbar invariant masses | `V0Cores` | `kzeroShort/hMassK0Short`, `lambda/hMassLambda` |
| 1 | topological selections (`Filter` + dynamic columns), rapidity, competing mass rejection | `V0Cores` | `hMass*Selected`, `hV0CosPA`, `hV0Radius` |
| 2 | TPC PID of the daughters (`posTrackExtra_as<>`) | `V0Extras`, `DauTrackExtras`, `DauTrackTPCPIDs` | `hNSigmaPos/NegPionFromK0s`, `hMass*Selected` |
| 3 | TOF PID optimised for secondary particles (`strangenesstofpid` task) | `V0TOFNSigmas` | `hMass*SelectedWithTOF` |
| 4 | MC truth: true reconstructed and generated V0s | `V0CoreMCLabels`, `V0MCCores`, `V0MCCollRefs` | `hPt*TrueRec`, `genParticles/hPt*Gen` |

Step 1 selections (in `jsonConfigs/step1.json`):

| Selection | Value | Getter | Column |
|---|---|---|---|
| DCA pos./neg. daughter to PV | > 0.06 cm | `dcapostopv()`, `dcanegtopv()` | standard |
| DCA between daughters | < 0.5 cm | `dcaV0daughters()` | standard |
| cosine of pointing angle | > 0.995 | `v0cosPA()` | **standard** in derived data |
| decay radius | > 0.9 cm | `v0radius()` | dynamic |
| rapidity | \|y\| < 0.5 | `yK0Short()`, `yLambda()` | dynamic |
| Selection | Value | Getter | Column |
|------------------------------|-------------|--------------------------------|------------------------------|
| DCA pos./neg. daughter to PV | > 0.06 cm | `dcapostopv()`, `dcanegtopv()` | standard |
| DCA between daughters | < 0.5 cm | `dcaV0daughters()` | standard |
| cosine of pointing angle | > 0.995 | `v0cosPA()` | **standard** in derived data |
| decay radius | > 0.9 cm | `v0radius()` | dynamic |
| rapidity | \|y\| < 0.5 | `yK0Short()`, `yLambda()` | dynamic |

Hints for the steps:
- **Step 0**: look at the `aod::V0Cores` table in `PWGLF/DataModel/LFStrangenessTables.h` and at the getters
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