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[ALICE3] Update alice3-qa-singleparticle.cxx #15845

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Merged
njacazio merged 1 commit into from
Apr 17, 2026
+43 −12
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[ALICE3] Update alice3-qa-singleparticle.cxx #15845

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55 changes: 43 additions & 12 deletions ALICE3/Tasks/alice3-qa-singleparticle.cxx
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
// Copyright 2019-2020 CERN and copyright holders of ALICE O2.

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[name/workflow-file] 

Name of a workflow file must match the name of the main struct in it (without the PWG prefix). (Class implementation files should be in "Core" directories.)
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
Expand Down Expand Up @@ -27,7 +27,7 @@
#include <Framework/OutputObjHeader.h>
#include <Framework/runDataProcessing.h>

#include <TDatabasePDG.h>

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[pdg/database] 

Do not use TDatabasePDG directly. Use o2::constants::physics::Mass... or Service<o2::framework::O2DatabasePDG> instead.
#include <TH1.h>
#include <TH2.h>
#include <TMCProcess.h>
Expand All @@ -46,12 +46,12 @@

struct Alice3SingleParticle {
Service<o2::framework::O2DatabasePDG> pdg;
Configurable<int> PDG{"PDG", 2212, "PDG code of the particle of interest"};

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[name/configurable] 

Use lowerCamelCase for names of configurables and use the same name for the struct member as for the JSON string. (Declare the type and names on the same line.)
Configurable<int> IsStable{"IsStable", 0, "Flag to check stable particles"};

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[name/configurable] 

Use lowerCamelCase for names of configurables and use the same name for the struct member as for the JSON string. (Declare the type and names on the same line.)
HistogramRegistry histos{"Histos", {}, OutputObjHandlingPolicy::AnalysisObject};
Configurable<int> ptBins{"pt-bins", 500, "Number of pT bins"};

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[name/configurable] 

Use lowerCamelCase for names of configurables and use the same name for the struct member as for the JSON string. (Declare the type and names on the same line.)
Configurable<float> ptMin{"pt-min", 0.f, "Lower limit in pT"};

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[name/configurable] 

Use lowerCamelCase for names of configurables and use the same name for the struct member as for the JSON string. (Declare the type and names on the same line.)
Configurable<float> ptMax{"pt-max", 10.f, "Upper limit in pT"};

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[name/configurable] 

Use lowerCamelCase for names of configurables and use the same name for the struct member as for the JSON string. (Declare the type and names on the same line.)
Configurable<int> etaBins{"eta-bins", 500, "Number of eta bins"};
Configurable<float> etaMin{"eta-min", -3.f, "Lower limit in eta"};
Configurable<float> etaMax{"eta-max", 3.f, "Upper limit in eta"};
Expand Down Expand Up @@ -159,6 +159,11 @@
histos.add("particle/Px", "Particle Px " + tit, kTH1D, {axisPx});
histos.add("particle/Py", "Particle Py " + tit, kTH1D, {axisPy});
histos.add("particle/Pz", "Particle Pz " + tit, kTH1D, {axisPz});
histos.add("particle/decayDistanceX", "Particle decay distance " + tit, kTH1D, {axisProdx});
histos.add("particle/decayDistanceY", "Particle decay distance " + tit, kTH1D, {axisPrody});
histos.add("particle/decayDistanceZ", "Particle decay distance " + tit, kTH1D, {axisProdz});
histos.add("particle/decayDistanceVsPt", "Particle decay distance " + tit, kTH2D, {axisPt, axisProdRadius});
histos.add("particle/decayCtau", "Particle decay distance " + tit, kTH1D, {{1000, 0, 10000, "c#tau (#mum)"}});

histos.add("particle/daughters/Number", "Number of Daughters " + tit, kTH1D, {{20, -0.5, 19.5}});
histos.add("particle/daughters/PDGs", "Daughters PDGs " + tit, kTH2D, {axisPDGs, axisCharge});
Expand All @@ -167,10 +172,6 @@
histos.add("particle/daughters/prodVx", "Daughters Prod. Vertex X " + tit, kTH1D, {axisProdx});
histos.add("particle/daughters/prodVy", "Daughters Prod. Vertex Y " + tit, kTH1D, {axisPrody});
histos.add("particle/daughters/prodVz", "Daughters Prod. Vertex Z " + tit, kTH1D, {axisProdz});
histos.add("particle/daughters/prodDistanceX", "Daughters Prod. distance " + tit, kTH1D, {axisProdx});
histos.add("particle/daughters/prodDistanceY", "Daughters Prod. distance " + tit, kTH1D, {axisPrody});
histos.add("particle/daughters/prodDistanceZ", "Daughters Prod. distance " + tit, kTH1D, {axisProdz});
histos.add("particle/daughters/prodDistanceVsPt", "Daughters Prod. distance " + tit, kTH2D, {axisPt, axisProdRadius});
histos.add("particle/daughters/prodRadiusVsPt", "Daughters Prod. Vertex Radius " + tit, kTH2D, {axisPt, axisProdRadius});
histos.add("particle/daughters/prodRadius3DVsPt", "Daughters Prod. Vertex Radius XYZ " + tit, kTH2D, {axisPt, axisProdRadius});

Expand Down Expand Up @@ -290,8 +291,9 @@
histos.fill(HIST("particle/prodVy"), mcParticle.vy());
histos.fill(HIST("particle/prodVz"), mcParticle.vz());
if (mcParticle.has_daughters()) {
auto daughters = mcParticle.daughters_as<aod::McParticles>();
const auto& daughters = mcParticle.daughters_as<aod::McParticles>();
histos.fill(HIST("particle/daughters/Number"), daughters.size());
bool filledDistance = false;
for (const auto& daughter : daughters) {
const auto& pdgStringDau = getPdgCodeString(daughter);
const auto& pdgChargeDau = getCharge(daughter);
Expand All @@ -306,12 +308,24 @@
histos.fill(HIST("particle/daughters/prodVx"), daughter.vx());
histos.fill(HIST("particle/daughters/prodVy"), daughter.vy());
histos.fill(HIST("particle/daughters/prodVz"), daughter.vz());
histos.fill(HIST("particle/daughters/prodDistanceX"), daughter.vx() - mcParticle.vx());
histos.fill(HIST("particle/daughters/prodDistanceY"), daughter.vy() - mcParticle.vy());
histos.fill(HIST("particle/daughters/prodDistanceZ"), daughter.vz() - mcParticle.vz());
histos.fill(HIST("particle/daughters/prodDistanceVsPt"), mcParticle.pt(), std::sqrt((daughter.vx() - mcParticle.vx()) * (daughter.vx() - mcParticle.vx()) + (daughter.vy() - mcParticle.vy()) * (daughter.vy() - mcParticle.vy()) + (daughter.vz() - mcParticle.vz()) * (daughter.vz() - mcParticle.vz())));
if (filledDistance) {
continue;
}
filledDistance = true;
histos.fill(HIST("particle/daughters/prodRadiusVsPt"), mcParticle.pt(), std::sqrt(daughter.vx() * daughter.vx() + daughter.vy() * daughter.vy()));
histos.fill(HIST("particle/daughters/prodRadius3DVsPt"), mcParticle.pt(), std::sqrt(daughter.vx() * daughter.vx() + daughter.vy() * daughter.vy() + daughter.vz() * daughter.vz()));

const float dx = daughter.vx() - mcParticle.vx();
const float dy = daughter.vy() - mcParticle.vy();
const float dz = daughter.vz() - mcParticle.vz();
histos.fill(HIST("particle/decayDistanceX"), dx);
histos.fill(HIST("particle/decayDistanceY"), dy);
histos.fill(HIST("particle/decayDistanceZ"), dz);
histos.fill(HIST("particle/decayDistanceVsPt"), mcParticle.pt(), std::sqrt((dx) * (dx) + (dy) * (dy) + (dz) * (dz)));
if (pdg->GetParticle(mcParticle.pdgCode())) {
const float mass = pdg->GetParticle(mcParticle.pdgCode())->Mass();
histos.fill(HIST("particle/decayCtau"), std::sqrt((dx) * (dx) + (dy) * (dy) + (dz) * (dz)) / mcParticle.pt() * mass * 10 * 1000);
}
}
} else {
histos.fill(HIST("particle/daughters/Number"), 0.f);
Expand Down Expand Up @@ -360,7 +374,7 @@
histos.fill(HIST("particle/prodRadius"), std::sqrt(mcParticle.vx() * mcParticle.vx() + mcParticle.vy() * mcParticle.vy()));
histos.fill(HIST("particle/prodVxVy"), mcParticle.vx(), mcParticle.vy());
if (!mcParticle.isPhysicalPrimary()) {
if (mcParticle.getProcess() == 4) {

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[magic-number] 

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histos.fill(HIST("particle/prodVxVyStr"), mcParticle.vx(), mcParticle.vy());
} else {
histos.fill(HIST("particle/prodVxVyMat"), mcParticle.vx(), mcParticle.vy());
Expand Down Expand Up @@ -494,8 +508,9 @@
histos.fill(HIST("particle/prodVy"), mcParticle.vy());
histos.fill(HIST("particle/prodVz"), mcParticle.vz());
if (mcParticle.has_daughters()) {
auto daughters = mcParticle.daughters_as<aod::McParticles>();
const auto& daughters = mcParticle.daughters_as<aod::McParticles>();
histos.fill(HIST("particle/daughters/Number"), daughters.size());
bool filledDistance = false;
for (const auto& daughter : daughters) {
const auto& pdgStringDau = getPdgCodeString(daughter);
const auto& pdgChargeDau = getCharge(daughter);
Expand All @@ -510,8 +525,24 @@
histos.fill(HIST("particle/daughters/prodVx"), daughter.vx());
histos.fill(HIST("particle/daughters/prodVy"), daughter.vy());
histos.fill(HIST("particle/daughters/prodVz"), daughter.vz());
histos.fill(HIST("particle/daughters/prodRadiusVsPt"), mcParticle.pt(), std::sqrt(mcParticle.vx() * mcParticle.vx() + mcParticle.vy() * mcParticle.vy()));
histos.fill(HIST("particle/daughters/prodRadius3DVsPt"), mcParticle.pt(), std::sqrt(mcParticle.vx() * mcParticle.vx() + mcParticle.vy() * mcParticle.vy() + mcParticle.vz() * mcParticle.vz()));
if (filledDistance) {
continue;
}
filledDistance = true;
histos.fill(HIST("particle/daughters/prodRadiusVsPt"), mcParticle.pt(), std::sqrt(daughter.vx() * daughter.vx() + daughter.vy() * daughter.vy()));
histos.fill(HIST("particle/daughters/prodRadius3DVsPt"), mcParticle.pt(), std::sqrt(daughter.vx() * daughter.vx() + daughter.vy() * daughter.vy() + daughter.vz() * daughter.vz()));

const float dx = daughter.vx() - mcParticle.vx();
const float dy = daughter.vy() - mcParticle.vy();
const float dz = daughter.vz() - mcParticle.vz();
histos.fill(HIST("particle/decayDistanceX"), dx);
histos.fill(HIST("particle/decayDistanceY"), dy);
histos.fill(HIST("particle/decayDistanceZ"), dz);
histos.fill(HIST("particle/decayDistanceVsPt"), mcParticle.pt(), std::sqrt((dx) * (dx) + (dy) * (dy) + (dz) * (dz)));
if (pdg->GetParticle(mcParticle.pdgCode())) {
const float mass = pdg->GetParticle(mcParticle.pdgCode())->Mass();
histos.fill(HIST("particle/decayCtau"), std::sqrt((dx) * (dx) + (dy) * (dy) + (dz) * (dz)) / mcParticle.pt() * mass * 10 * 1000);
}
}
} else {
histos.fill(HIST("particle/daughters/Number"), 0.f);
Expand Down Expand Up @@ -540,7 +571,7 @@
histos.fill(HIST("particle/prodRadius"), std::sqrt(mcParticle.vx() * mcParticle.vx() + mcParticle.vy() * mcParticle.vy()));
histos.fill(HIST("particle/prodVxVy"), mcParticle.vx(), mcParticle.vy());
if (!mcParticle.isPhysicalPrimary()) {
if (mcParticle.getProcess() == 4) {

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
histos.fill(HIST("particle/prodVxVyStr"), mcParticle.vx(), mcParticle.vy());
} else {
histos.fill(HIST("particle/prodVxVyMat"), mcParticle.vx(), mcParticle.vy());
Expand Down Expand Up @@ -662,7 +693,7 @@
histos.fill(HIST("particle/prodRadius"), std::sqrt(mcParticle.vx() * mcParticle.vx() + mcParticle.vy() * mcParticle.vy()));
histos.fill(HIST("particle/prodVxVy"), mcParticle.vx(), mcParticle.vy());
if (!mcParticle.isPhysicalPrimary()) {
if (mcParticle.getProcess() == 4) {

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histos.fill(HIST("particle/prodVxVyStr"), mcParticle.vx(), mcParticle.vy());
} else {
histos.fill(HIST("particle/prodVxVyMat"), mcParticle.vx(), mcParticle.vy());
Expand Down
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