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[PWGEM] PM: Overhaul NonLin with new centrality dependent paramenter …#15420

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mhemmer-cern merged 1 commit intoAliceO2Group:masterfrom
mhemmer-cern:PWGEM-36
Mar 16, 2026
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[PWGEM] PM: Overhaul NonLin with new centrality dependent paramenter …#15420
mhemmer-cern merged 1 commit intoAliceO2Group:masterfrom
mhemmer-cern:PWGEM-36

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…approach.

  • Non Lin now uses correction of type a + b * refVal^(-c). Each parameter (a,b, and c) are described by a linear function of centrality. This makes 6 meta parameters (2 meta parameters for each parameter). Those 6 meta parameters are stored in a TMatrixD in the CCDB, where the number of rows marks the number of iterations.

  • Add default values for V0PhotonCandidate.

  • Remove using namespace from PWGEM/PhotonMeson/Core/MaterialBudgetWeights.h

…approach.

- Non Lin now uses correction of type a + b * refVal^(-c). Each parameter (a,b, and c) are described by a linear function of centrality. This makes 6 meta parameters (2 meta parameters for each parameter). Those 6 meta parameters are stored in a TMatrixD in the CCDB, where the number of rows marks the number of iterations.

- Add default values for V0PhotonCandidate.
- Remove `using namespace` from `PWGEM/PhotonMeson/Core/MaterialBudgetWeights.h`
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Auto-approving on behalf of @mhemmer-cern.

@mhemmer-cern mhemmer-cern merged commit 44df812 into AliceO2Group:master Mar 16, 2026
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@mhemmer-cern mhemmer-cern deleted the PWGEM-36 branch March 16, 2026 21:50
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