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[PWGLF] added different centrality estimators #12584

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Merged
romainschotter merged 4 commits into from
Aug 16, 2025
Merged

[PWGLF] added different centrality estimators #12584

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94e5e7b
removed the cuts on findable clusters
Aug 14, 2025
4543138
updated
Aug 14, 2025
6a7a792
added different centrality estimators
Aug 16, 2025
9cac2d0
initialised cent
Aug 16, 2025
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29 changes: 26 additions & 3 deletions PWGLF/Tasks/Strangeness/lambdapolsp.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -58,7 +58,7 @@
#include <cmath>
#include <cstdlib>
#include <deque>
#include <iostream>

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[include-iostream] 

Do not include iostream. Use O2 logging instead.
#include <iterator>
#include <set> // <<< CHANGED: for dedup sets
#include <string>
Expand Down Expand Up @@ -99,6 +99,7 @@
Configurable<int> cfgMaxOccupancy{"cfgMaxOccupancy", 1000, "maximum occupancy of tracks in neighbouring collisions in a given time range"};
Configurable<int> cfgMinOccupancy{"cfgMinOccupancy", 0, "maximum occupancy of tracks in neighbouring collisions in a given time range"};
Configurable<int> sys{"sys", 1, "flag to select systematic source"};
Configurable<int> centestim{"centestim", 0, "flag to select centrality estimator"};
Configurable<bool> dosystematic{"dosystematic", false, "flag to perform systematic study"};
Configurable<bool> needetaaxis{"needetaaxis", false, "flag to use last axis"};
struct : ConfigurableGroup {
Expand Down Expand Up @@ -428,12 +429,12 @@
template <typename Collision, typename V0>
bool SelectionV0(Collision const& collision, V0 const& candidate)
{
if (TMath::Abs(candidate.dcav0topv()) > cMaxV0DCA) {

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[root/entity] 

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return false;
}
const float pT = candidate.pt();
const float tranRad = candidate.v0radius();
const float dcaDaughv0 = TMath::Abs(candidate.dcaV0daughters());

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[root/entity] 

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const float cpav0 = candidate.v0cosPA();

float CtauLambda = candidate.distovertotmom(collision.posX(), collision.posY(), collision.posZ()) * massLambda;
Expand All @@ -456,16 +457,16 @@
if (tranRad > ConfV0TranRadV0Max) {
return false;
}
if (analyzeLambda && TMath::Abs(CtauLambda) > cMaxV0LifeTime) {

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[root/entity] 

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return false;
}
if (analyzeK0s && TMath::Abs(CtauK0s) > cMaxV0LifeTime) {

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[root/entity] 

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return false;
}
if (analyzeLambda && TMath::Abs(candidate.yLambda()) > ConfV0Rap) {

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[root/entity] 

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return false;
}
if (analyzeK0s && TMath::Abs(candidate.yK0Short()) > ConfV0Rap) {

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[root/entity] 

Replace ROOT entities with equivalents from standard C++ or from O2.
return false;
}
return true;
Expand All @@ -483,6 +484,7 @@
/*if (TMath::Abs(eta) > ConfDaughEta) {
return false;
}*/

if (tpcNClsF < ConfDaughTPCnclsMin) {
return false;
}
Expand All @@ -490,10 +492,10 @@
return false;
}

if (pid == 0 && TMath::Abs(track.tpcNSigmaPr()) > ConfDaughPIDCuts) {

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[root/entity] 

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return false;
}
if (pid == 1 && TMath::Abs(track.tpcNSigmaPi()) > ConfDaughPIDCuts) {

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[root/entity] 

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return false;
}
if (pid == 0 && (candidate.positivept() < cfgDaughPrPt || candidate.negativept() < cfgDaughPiPt)) {
Expand All @@ -506,7 +508,7 @@
return false;
}

if (pid2 == 0 && (TMath::Abs(candidate.dcapostopv()) < cMinV0DCAPr || TMath::Abs(candidate.dcanegtopv()) < cMinV0DCAPi)) {

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[root/entity] 

Replace ROOT entities with equivalents from standard C++ or from O2.
return false;
}
if (pid2 == 1 && (TMath::Abs(candidate.dcapostopv()) < cMinV0DCAPi || TMath::Abs(candidate.dcanegtopv()) < cMinV0DCAPr)) {
Expand Down Expand Up @@ -541,6 +543,7 @@
if (posTrackExtra.tpcNClsCrossedRows() < cfgTPCcluster || negTrackExtra.tpcNClsCrossedRows() < cfgTPCcluster) {
return false;
}

if (posTrackExtra.tpcNClsFound() < ConfDaughTPCnclsMin || negTrackExtra.tpcNClsFound() < ConfDaughTPCnclsMin) {
return false;
}
Expand Down Expand Up @@ -587,12 +590,14 @@
if (posTrackExtra.tpcNClsCrossedRows() < cfgTPCcluster || negTrackExtra.tpcNClsCrossedRows() < cfgTPCcluster) {
return false;
}

if (posTrackExtra.tpcNClsFound() < ConfDaughTPCnclsMin || negTrackExtra.tpcNClsFound() < ConfDaughTPCnclsMin) {
return false;
}
if (posTrackExtra.tpcCrossedRowsOverFindableCls() < rcrfc || negTrackExtra.tpcCrossedRowsOverFindableCls() < rcrfc) {
return false;
}

// check TPC PID
if (((std::abs(posTrackExtra.tpcNSigmaPi()) > ConfDaughPIDCuts) || (std::abs(negTrackExtra.tpcNSigmaPi()) > ConfDaughPIDCuts))) {
return false;
Expand Down Expand Up @@ -798,7 +803,16 @@
if (!collision.sel8()) {
return;
}
auto centrality = collision.centFT0C();
double centrality = -999.;
if (centestim == 0)
centrality = collision.centFT0C();
else if (centestim == 1)
centrality = collision.centFT0M();
else if (centestim == 2)
centrality = collision.centFT0A();
else if (centestim == 3)
centrality = collision.centFV0A();

// histos.fill(HIST("hCentrality0"), centrality);
if (!collision.triggereventsp()) {
return;
Expand Down Expand Up @@ -1199,7 +1213,17 @@
if (!collision.sel8()) {
return;
}
auto centrality = collision.centFT0C();
double centrality = -999.;
if (centestim == 0)
centrality = collision.centFT0C();
else if (centestim == 1)
centrality = collision.centFT0M();
else if (centestim == 2)
centrality = collision.centFT0A();
else if (centestim == 3)
centrality = collision.centFV0A();

// auto centrality = collision.centFT0C();
if (!collision.triggereventsp()) { // provided by StraZDCSP
return;
}
Expand Down Expand Up @@ -1617,7 +1641,6 @@
if (additionalEvSel4 && !collision2.selection_bit(o2::aod::evsel::kIsGoodITSLayersAll)) {
continue;
}

auto centrality = collision1.centFT0C();
auto qxZDCA = collision1.qxZDCA();
auto qxZDCC = collision1.qxZDCC();
Expand Down
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