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[PWGLF] Add customV0 pairing for Sigma+ PCM photon #18175

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[PWGLF] Add customV0 pairing for Sigma+ PCM photon #18175

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9c5afa1
sigmaplus-pairing-fix
Oct 5, 2026
3502361
Fix: MegaLinter
Oct 5, 2026
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48 changes: 38 additions & 10 deletions PWGLF/DataModel/LFKinkDecayTables.h
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Original file line number Diff line number Diff line change
Expand Up @@ -191,11 +191,11 @@ DECLARE_SOA_COLUMN(PhotonQt, photonQt, float); //! Armente
DECLARE_SOA_COLUMN(PhotonConvRadius, photonConvRadius, float); //! Conversion radius of the measured photon (cm)
DECLARE_SOA_COLUMN(PhotonOpeningAngle, photonOpeningAngle, float); //! Opening angle between the photon's e+e- daughters (rad)
DECLARE_SOA_COLUMN(PhotonPointingAngle, photonPointingAngle, float); //! Angle between the photon momentum and the line from its conversion point to the candidate decay vertex (rad)
DECLARE_SOA_COLUMN(PhotonDcaToPV, photonDcaToPV, float); //! DCA of the photon's flight line to the primary vertex (cm)

DECLARE_SOA_COLUMN(RootCenter, rootCenter, float); //! -coefB/(2*coefA) of the missing-photon quadratic solve: negative flags an unphysical phase-space point
DECLARE_SOA_COLUMN(AntiSigmaPointingAngle, antiSigmaPointingAngle, float); //! Angle between the field-unbent proton momentum (from its original reference point) and the PV->decay-vertex direction
DECLARE_SOA_COLUMN(CandDcaToPV, candDcaToPV, float); //! DCA of the candidate's total reconstructed momentum line to the PV (cm)
DECLARE_SOA_COLUMN(FlightDirTilt, flightDirTilt, float); //! Tilt of the PV->decay-vertex direction needed for the missing photon to have a real solution (rad), 0 if none needed

DECLARE_SOA_COLUMN(ProtonSign, protonSign, int); //! Charge sign of the proton track (= sign of the whole candidate, since the photon is neutral)
DECLARE_SOA_COLUMN(ProtonItsNCls, protonItsNCls, uint8_t); //! Number of ITS clusters of the proton track
Expand All @@ -208,10 +208,26 @@ DECLARE_SOA_COLUMN(PhotonPosTpcNCls, photonPosTpcNCls, int16_t); //! Number of f
DECLARE_SOA_COLUMN(PhotonNegItsNCls, photonNegItsNCls, uint8_t); //! Number of ITS clusters of the photon's negative daughter
DECLARE_SOA_COLUMN(PhotonNegTpcNCls, photonNegTpcNCls, int16_t); //! Number of found TPC clusters of the photon's negative daughter

DECLARE_SOA_COLUMN(PhotonDcaDau, photonDcaDau, float); //! DCA between the photon's e+e- daughters at the conversion point (cm)
DECLARE_SOA_COLUMN(PhotonCosPAToPV, photonCosPAToPV, float); //! Cosine of the angle between the photon momentum and the PV->conversion-point direction
DECLARE_SOA_COLUMN(PhotonDcaXYToPV, photonDcaXYToPV, float); //! Transverse DCA of the photon's flight line to the PV (cm)
DECLARE_SOA_COLUMN(PhotonDcaZToPV, photonDcaZToPV, float); //! Longitudinal distance of the photon's flight line to the PV at its transverse DCA (cm)
DECLARE_SOA_COLUMN(PhotonPsiPair, photonPsiPair, float); //! psi_pair of the e+e- legs, evaluated after propagating them outward, 999 if the propagation failed
DECLARE_SOA_COLUMN(PhotonPosDcaXY, photonPosDcaXY, float); //! DCAxy of the photon's positive daughter to the PV of its own collision (cm)
DECLARE_SOA_COLUMN(PhotonPosDcaZ, photonPosDcaZ, float); //! DCAz of the photon's positive daughter to the PV of its own collision (cm)
DECLARE_SOA_COLUMN(PhotonNegDcaXY, photonNegDcaXY, float); //! DCAxy of the photon's negative daughter to the PV of its own collision (cm)
DECLARE_SOA_COLUMN(PhotonNegDcaZ, photonNegDcaZ, float); //! DCAz of the photon's negative daughter to the PV of its own collision (cm)
DECLARE_SOA_COLUMN(PhotonPosTpcNClsFindable, photonPosTpcNClsFindable, int16_t); //! Number of findable TPC clusters of the photon's positive daughter
DECLARE_SOA_COLUMN(PhotonNegTpcNClsFindable, photonNegTpcNClsFindable, int16_t); //! Number of findable TPC clusters of the photon's negative daughter
DECLARE_SOA_COLUMN(PhotonPosTpcChi2NCl, photonPosTpcChi2NCl, float); //! TPC chi2 per cluster of the photon's positive daughter
DECLARE_SOA_COLUMN(PhotonNegTpcChi2NCl, photonNegTpcChi2NCl, float); //! TPC chi2 per cluster of the photon's negative daughter

// MC columns
DECLARE_SOA_COLUMN(CollisionIdCheck, collisionIdCheck, bool); //! True if the proton's collision ID matches the reconstructed collision ID

DECLARE_SOA_COLUMN(IsSignal, isSignal, bool); //! True if the proton and photon share the same true Sigma+ mother
DECLARE_SOA_COLUMN(IsSignal, isSignal, bool); //! True if the proton and photon share the same true Sigma+ mother
DECLARE_SOA_COLUMN(IsProtonFromSigma, isProtonFromSigma, bool); //! True if the proton is the daughter of a true Sigma+ -> p pi0
DECLARE_SOA_COLUMN(IsPhotonFromSigma, isPhotonFromSigma, bool); //! True if the photon is from the pi0 of a true Sigma+ -> p pi0

DECLARE_SOA_COLUMN(XDecVtxMC, xDecVtxMC, float); //! MC-truth Sigma+ decay vertex (x direction)
DECLARE_SOA_COLUMN(YDecVtxMC, yDecVtxMC, float); //! MC-truth Sigma+ decay vertex (y direction)
Expand Down Expand Up @@ -273,11 +289,14 @@ DECLARE_SOA_TABLE(SigmaPlusCands, "AOD", "SIGMAPLUSCANDS",
sigmapluscand::NSigmaTPCProton, sigmapluscand::NSigmaTOFProton,
sigmapluscand::NSigmaTPCElPos, sigmapluscand::NSigmaTPCElNeg,
sigmapluscand::PhotonMass, sigmapluscand::PhotonAlpha, sigmapluscand::PhotonQt, sigmapluscand::PhotonConvRadius,
sigmapluscand::PhotonOpeningAngle, sigmapluscand::PhotonPointingAngle, sigmapluscand::PhotonDcaToPV,
sigmapluscand::RootCenter, sigmapluscand::AntiSigmaPointingAngle, sigmapluscand::CandDcaToPV,
sigmapluscand::PhotonOpeningAngle, sigmapluscand::PhotonPointingAngle,
sigmapluscand::RootCenter, sigmapluscand::AntiSigmaPointingAngle, sigmapluscand::CandDcaToPV, sigmapluscand::FlightDirTilt,
sigmapluscand::ProtonSign,
sigmapluscand::ProtonItsNCls, sigmapluscand::ProtonTpcNCls, sigmapluscand::ProtonDcaXY, sigmapluscand::ProtonDcaZ,
sigmapluscand::PhotonPosItsNCls, sigmapluscand::PhotonPosTpcNCls, sigmapluscand::PhotonNegItsNCls, sigmapluscand::PhotonNegTpcNCls,
sigmapluscand::PhotonDcaDau, sigmapluscand::PhotonCosPAToPV, sigmapluscand::PhotonDcaXYToPV, sigmapluscand::PhotonDcaZToPV, sigmapluscand::PhotonPsiPair,
sigmapluscand::PhotonPosDcaXY, sigmapluscand::PhotonPosDcaZ, sigmapluscand::PhotonNegDcaXY, sigmapluscand::PhotonNegDcaZ,
sigmapluscand::PhotonPosTpcNClsFindable, sigmapluscand::PhotonNegTpcNClsFindable, sigmapluscand::PhotonPosTpcChi2NCl, sigmapluscand::PhotonNegTpcChi2NCl,

// dynamic columns
sigmapluscand::Radius<sigmapluscand::XDecVtx, sigmapluscand::YDecVtx>,
Expand All @@ -297,13 +316,16 @@ DECLARE_SOA_TABLE(SigmaPlusCandsMC, "AOD", "SIGMAPLUSMC",
sigmapluscand::NSigmaTPCProton, sigmapluscand::NSigmaTOFProton,
sigmapluscand::NSigmaTPCElPos, sigmapluscand::NSigmaTPCElNeg,
sigmapluscand::PhotonMass, sigmapluscand::PhotonAlpha, sigmapluscand::PhotonQt, sigmapluscand::PhotonConvRadius,
sigmapluscand::PhotonOpeningAngle, sigmapluscand::PhotonPointingAngle, sigmapluscand::PhotonDcaToPV,
sigmapluscand::RootCenter, sigmapluscand::AntiSigmaPointingAngle, sigmapluscand::CandDcaToPV,
sigmapluscand::PhotonOpeningAngle, sigmapluscand::PhotonPointingAngle,
sigmapluscand::RootCenter, sigmapluscand::AntiSigmaPointingAngle, sigmapluscand::CandDcaToPV, sigmapluscand::FlightDirTilt,
sigmapluscand::ProtonSign,
sigmapluscand::ProtonItsNCls, sigmapluscand::ProtonTpcNCls, sigmapluscand::ProtonDcaXY, sigmapluscand::ProtonDcaZ,
sigmapluscand::PhotonPosItsNCls, sigmapluscand::PhotonPosTpcNCls, sigmapluscand::PhotonNegItsNCls, sigmapluscand::PhotonNegTpcNCls,
sigmapluscand::PhotonDcaDau, sigmapluscand::PhotonCosPAToPV, sigmapluscand::PhotonDcaXYToPV, sigmapluscand::PhotonDcaZToPV, sigmapluscand::PhotonPsiPair,
sigmapluscand::PhotonPosDcaXY, sigmapluscand::PhotonPosDcaZ, sigmapluscand::PhotonNegDcaXY, sigmapluscand::PhotonNegDcaZ,
sigmapluscand::PhotonPosTpcNClsFindable, sigmapluscand::PhotonNegTpcNClsFindable, sigmapluscand::PhotonPosTpcChi2NCl, sigmapluscand::PhotonNegTpcChi2NCl,
sigmapluscand::CollisionIdCheck,
sigmapluscand::IsSignal,
sigmapluscand::IsSignal, sigmapluscand::IsProtonFromSigma, sigmapluscand::IsPhotonFromSigma,
sigmapluscand::XDecVtxMC, sigmapluscand::YDecVtxMC, sigmapluscand::ZDecVtxMC,
sigmapluscand::PxProtonMC, sigmapluscand::PyProtonMC, sigmapluscand::PzProtonMC,
sigmapluscand::PxGammaMC, sigmapluscand::PyGammaMC, sigmapluscand::PzGammaMC,
Expand All @@ -323,7 +345,7 @@ DECLARE_SOA_TABLE(SigmaPlusCandsMC, "AOD", "SIGMAPLUSMC",

DECLARE_SOA_TABLE(SlimSigmaPlusCands, "AOD", "SLIMSIGMAPLUS",
sigmapluscand::TransDecayRadius,
sigmapluscand::CandDcaToPV,
sigmapluscand::CandDcaToPV, sigmapluscand::FlightDirTilt,
sigmapluscand::DcaProtonGamma,
sigmapluscand::ProtonSign,
sigmapluscand::ProtonDcaXY, sigmapluscand::ProtonDcaZ,
Expand All @@ -333,6 +355,9 @@ DECLARE_SOA_TABLE(SlimSigmaPlusCands, "AOD", "SLIMSIGMAPLUS",
sigmapluscand::NSigmaTPCProton, sigmapluscand::NSigmaTOFProton,
sigmapluscand::NSigmaTPCElPos, sigmapluscand::NSigmaTPCElNeg,
sigmapluscand::PhotonMass,
sigmapluscand::PhotonDcaDau, sigmapluscand::PhotonCosPAToPV, sigmapluscand::PhotonDcaXYToPV, sigmapluscand::PhotonDcaZToPV, sigmapluscand::PhotonPsiPair,
sigmapluscand::PhotonPosDcaXY, sigmapluscand::PhotonPosDcaZ, sigmapluscand::PhotonNegDcaXY, sigmapluscand::PhotonNegDcaZ,
sigmapluscand::PhotonPosTpcNClsFindable, sigmapluscand::PhotonNegTpcNClsFindable, sigmapluscand::PhotonPosTpcChi2NCl, sigmapluscand::PhotonNegTpcChi2NCl,

// dynamic columns
sigmapluscand::PxSigmaPlus<sigmapluscand::PxProton, sigmapluscand::PxGamma1, sigmapluscand::PxGamma2>,
Expand All @@ -343,7 +368,7 @@ DECLARE_SOA_TABLE(SlimSigmaPlusCands, "AOD", "SLIMSIGMAPLUS",

DECLARE_SOA_TABLE(SlimSigmaPlusCandsMC, "AOD", "SLIMSIGMAPLUSMC",
sigmapluscand::TransDecayRadius,
sigmapluscand::CandDcaToPV,
sigmapluscand::CandDcaToPV, sigmapluscand::FlightDirTilt,
sigmapluscand::DcaProtonGamma,
sigmapluscand::ProtonSign,
sigmapluscand::ProtonDcaXY, sigmapluscand::ProtonDcaZ,
Expand All @@ -353,8 +378,11 @@ DECLARE_SOA_TABLE(SlimSigmaPlusCandsMC, "AOD", "SLIMSIGMAPLUSMC",
sigmapluscand::NSigmaTPCProton, sigmapluscand::NSigmaTOFProton,
sigmapluscand::NSigmaTPCElPos, sigmapluscand::NSigmaTPCElNeg,
sigmapluscand::PhotonMass,
sigmapluscand::PhotonDcaDau, sigmapluscand::PhotonCosPAToPV, sigmapluscand::PhotonDcaXYToPV, sigmapluscand::PhotonDcaZToPV, sigmapluscand::PhotonPsiPair,
sigmapluscand::PhotonPosDcaXY, sigmapluscand::PhotonPosDcaZ, sigmapluscand::PhotonNegDcaXY, sigmapluscand::PhotonNegDcaZ,
sigmapluscand::PhotonPosTpcNClsFindable, sigmapluscand::PhotonNegTpcNClsFindable, sigmapluscand::PhotonPosTpcChi2NCl, sigmapluscand::PhotonNegTpcChi2NCl,
sigmapluscand::CollisionIdCheck,
sigmapluscand::IsSignal,
sigmapluscand::IsSignal, sigmapluscand::IsProtonFromSigma, sigmapluscand::IsPhotonFromSigma,
sigmapluscand::DecayRadiusMC, sigmapluscand::MassMC,
sigmapluscand::PxSigmaPlusMC, sigmapluscand::PySigmaPlusMC, sigmapluscand::PzSigmaPlusMC,

Expand Down
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