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[PWGLF] Please consider the following formatting changes to #13529 #4

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[PWGLF] Please consider the following formatting changes to #13529 #4

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b6008ad
use PCC in charged particle analysis
mario-krueger Oct 24, 2025
f99a226
Please consider the following formatting changes
alibuild Oct 24, 2025
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105 changes: 80 additions & 25 deletions PWGLF/Tasks/Nuspex/chargedParticles.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,8 @@
/// \brief Task for analysis of charged particle pt spectra vs multiplicity with 2d unfolding.
/// \author Mario Krüger <mario.kruger@cern.ch>

#include "PWGLF/DataModel/particleCompositionCorrectionTable.h"

#include "Common/Core/TrackSelection.h"
#include "Common/Core/TrackSelectionDefaults.h"
#include "Common/DataModel/Centrality.h"
Expand All @@ -25,6 +27,7 @@
#include <Framework/runDataProcessing.h>
#include <ReconstructionDataFormats/Track.h>

#include <random>
#include <unordered_set>
#include <vector>

Expand All @@ -38,6 +41,19 @@ using aod::track::TrackSelectionFlags;
//--------------------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------------------
struct ChargedParticles {
std::random_device rnd;
std::mt19937 gen{rnd()};
std::uniform_real_distribution<float> dist{0.f, 1.f};
uint32_t getNRepetitons(float scalingFactor)
{
uint32_t nRepetitions = static_cast<uint32_t>(scalingFactor);
float rest = scalingFactor - nRepetitions;
if (rest) {
nRepetitions += (dist(gen) <= rest) ? 1u : 0u;
// LOGP(info, "scalingFactor: {} -> {}", scalingFactor, nRepetitions);
}
return nRepetitions;
};

HistogramRegistry histos;
Service<o2::framework::O2DatabasePDG> pdg;
Expand All @@ -62,9 +78,11 @@ struct ChargedParticles {
kSystUpDCAxy,
kSystDownDCAz,
kSystUpDCAz,
kSystITSHits,
kSystITSHits, // only relevant for converted data
kSystDownTPCCrossedRows,
kSystUpTPCCrossedRows
kSystUpTPCCrossedRows,
kSystDownPCC = 120,
kSystUpPCC
};
Configurable<uint32_t> systMode{"systMode", kSystNominal, "variation for systematic uncertainties"};
uint16_t trackSelMask{TrackSelectionFlags::kGlobalTrackWoPtEta}; // track selection bitmask (without cut that is being varied)
Expand All @@ -80,6 +98,7 @@ struct ChargedParticles {
bool isAcceptedEventMC{false};
bool isINELGT0EventMC{false};
bool isChargedPrimary{false};
uint32_t nRepetitions{1u};
};
VarContainer vars;
static constexpr float kMaxVtxZ = 10.f;
Expand All @@ -92,7 +111,7 @@ struct ChargedParticles {
template <typename T>
bool initTrack(const T& track);

template <typename C, typename T>
template <bool IS_MC, typename C, typename T>
void initEvent(const C& collision, const T& tracks);

template <typename C, typename P>
Expand All @@ -112,9 +131,9 @@ struct ChargedParticles {
using CollisionTableMCTrue = aod::McCollisions;
using CollisionTableMC = soa::SmallGroups<soa::Join<aod::McCollisionLabels, aod::Collisions, aod::EvSels>>;
using TrackTableMC = soa::Join<aod::FullTracks, aod::TracksDCA, aod::TrackSelection, aod::McTrackLabels>;
using ParticleTableMC = aod::McParticles;
using ParticleTableMC = soa::Join<aod::McParticles, aod::ParticleCompositionCorrection>;
Preslice<TrackTableMC> perCollision = aod::track::collisionId;
void processMC(CollisionTableMCTrue::iterator const& mcCollision, CollisionTableMC const& collisions, TrackTableMC const& tracks, ParticleTableMC const& particles);
void processMC(CollisionTableMCTrue::iterator const& mcCollision, TrackTableMC const& tracks, CollisionTableMC const& collisions, ParticleTableMC const& particles);
PROCESS_SWITCH(ChargedParticles, processMC, "process mc", true);
};

Expand Down Expand Up @@ -241,7 +260,7 @@ void ChargedParticles::init(InitContext const&)
//**************************************************************************************************
void ChargedParticles::processData(CollisionTableData::iterator const& collision, TrackTableData const& tracks)
{
initEvent(collision, tracks);
initEvent<false>(collision, tracks);
processMeas<false>(tracks);
}

Expand All @@ -250,7 +269,7 @@ void ChargedParticles::processData(CollisionTableData::iterator const& collision
* Entrypoint to processes mc.
*/
//**************************************************************************************************
void ChargedParticles::processMC(CollisionTableMCTrue::iterator const& mcCollision, CollisionTableMC const& collisions, TrackTableMC const& tracks, ParticleTableMC const& particles)
void ChargedParticles::processMC(CollisionTableMCTrue::iterator const& mcCollision, TrackTableMC const& tracks, CollisionTableMC const& collisions, ParticleTableMC const& particles)
{
histos.fill(HIST("collision_ambiguity"), collisions.size());

Expand All @@ -270,7 +289,7 @@ void ChargedParticles::processMC(CollisionTableMCTrue::iterator const& mcCollisi
} else {
for (const auto& collision : collisions) {
auto curTracks = tracks.sliceBy(perCollision, collision.globalIndex());
initEvent(collision, curTracks);
initEvent<true>(collision, curTracks);
processMeas<true>(curTracks);
break; // for now look only at first collision...
}
Expand Down Expand Up @@ -302,6 +321,15 @@ bool ChargedParticles::initParticle(const P& particle)
if (particle.pt() <= ptMinCut || particle.pt() >= ptMaxCut) {
return false;
}

float pccWeight = particle.pccWeight();
if (systMode == kSystDownPCC) {
pccWeight = particle.pccWeightSysDown();
} else if (systMode == kSystUpPCC) {
pccWeight = particle.pccWeightSysUp();
}
vars.nRepetitions = getNRepetitons(pccWeight);
// FIXME: in case of nRepetitions = 0 INELGT0 can be wrong
return true;
}

Expand Down Expand Up @@ -334,20 +362,43 @@ bool ChargedParticles::initTrack(const T& track)
* Check if event is good.
*/
//**************************************************************************************************
template <typename C, typename T>
template <bool IS_MC, typename C, typename T>
void ChargedParticles::initEvent(const C& collision, const T& tracks)
{
vars.multMeas = 0;
for (const auto& track : tracks) {
if (initTrack(track)) {
++vars.multMeas;
if constexpr (IS_MC) {
if (!track.has_mcParticle()) {
continue;
}
const auto& particle = track.template mcParticle_as<ParticleTableMC>();
if (!initParticle(particle)) {
continue;
}
vars.multMeas += vars.nRepetitions;
} else {
++vars.multMeas;
}
}
}

vars.isAcceptedEvent = false;
if (std::abs(collision.posZ()) < kMaxVtxZ) {
if (isRun3 ? collision.sel8() : collision.sel7()) {
if ((isRun3 || doprocessMC) ? true : collision.alias_bit(kINT7)) {
if (isRun3) {
if (collision.sel8() &&
collision.selection_bit(aod::evsel::kNoSameBunchPileup) &&
collision.selection_bit(aod::evsel::kIsVertexITSTPC) &&
collision.selection_bit(aod::evsel::kIsGoodZvtxFT0vsPV))
// !collision.selection_bit(o2::aod::evsel::kIsVertexTRDmatched) &&
// collision.selection_bit(aod::evsel::kNoCollInTimeRangeStandard) &&
// collision.selection_bit(aod::evsel::kNoCollInRofStandard) &&
// collision.selection_bit(aod::evsel::kIsVertexTOFmatched)
{
vars.isAcceptedEvent = true;
}
} else {
if (collision.sel7() && ((doprocessMC) ? true : collision.alias_bit(kINT7))) {
vars.isAcceptedEvent = true;
}
}
Expand All @@ -368,7 +419,7 @@ void ChargedParticles::initEventMC(const C& collision, const P& particles)
if (!initParticle(particle) || !vars.isChargedPrimary) {
continue;
}
++vars.multTrue;
vars.multTrue += vars.nRepetitions;
}
bool isGoodEventClass = (normINELGT0) ? vars.isINELGT0EventMC : (vars.multTrue > 0);
vars.isAcceptedEventMC = isGoodEventClass && (std::abs(collision.posZ()) < kMaxVtxZ);
Expand All @@ -390,9 +441,11 @@ void ChargedParticles::processTrue(const P& particles)

for (const auto& particle : particles) {
if (initParticle(particle) && vars.isChargedPrimary) {
histos.fill(HIST("multPtSpec_prim_gen"), vars.multTrue, particle.pt());
if (!vars.isAcceptedEvent) {
histos.fill(HIST("multPtSpec_prim_gen_evtloss"), vars.multTrue, particle.pt());
for (auto i = 0u; i < vars.nRepetitions; ++i) {
histos.fill(HIST("multPtSpec_prim_gen"), vars.multTrue, particle.pt());
if (!vars.isAcceptedEvent) {
histos.fill(HIST("multPtSpec_prim_gen_evtloss"), vars.multTrue, particle.pt());
}
}
}
}
Expand Down Expand Up @@ -441,7 +494,7 @@ void ChargedParticles::processMeas(const T& tracks)

foundParticles.push_back(track.mcParticleId());

const auto& particle = track.template mcParticle_as<aod::McParticles>();
const auto& particle = track.template mcParticle_as<ParticleTableMC>();

if (!vars.isAcceptedEventMC) {
histos.fill(HIST("multPtSpec_trk_meas_evtcont"), vars.multMeas, track.pt());
Expand All @@ -450,19 +503,21 @@ void ChargedParticles::processMeas(const T& tracks)

histos.fill(HIST("multPtSpec_trk_inter"), vars.multTrue, track.pt());
if (initParticle(particle)) {
if (!vars.isChargedPrimary) {
histos.fill(HIST("multPtSpec_trk_sec_meas"), vars.multMeas, track.pt());
} else {
histos.fill(HIST("multCorrel_prim"), vars.multMeas, vars.multTrue);
histos.fill(HIST("ptCorrel_prim"), track.pt(), particle.pt());
histos.fill(HIST("multPtSpec_prim_meas"), vars.multTrue, particle.pt());
histos.fill(HIST("multPtSpec_trk_prim_meas"), vars.multMeas, track.pt());
for (auto i = 0u; i < vars.nRepetitions; ++i) {
if (!vars.isChargedPrimary) {
histos.fill(HIST("multPtSpec_trk_sec_meas"), vars.multMeas, track.pt());
} else {
histos.fill(HIST("multCorrel_prim"), vars.multMeas, vars.multTrue);
histos.fill(HIST("ptCorrel_prim"), track.pt(), particle.pt());
histos.fill(HIST("multPtSpec_prim_meas"), vars.multTrue, particle.pt());
histos.fill(HIST("multPtSpec_trk_prim_meas"), vars.multMeas, track.pt());
}
}
}
}
}

std::unordered_set<int> uniqueIndices(foundParticles.begin(), foundParticles.end());
std::unordered_set<int32_t> uniqueIndices(foundParticles.begin(), foundParticles.end());
for (const auto& mcParticleID : uniqueIndices) {
histos.fill(HIST("track_ambiguity"), std::count(foundParticles.begin(), foundParticles.end(), mcParticleID));
}
Expand Down
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