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Common: add UPC coll selection flag, vertex-Z correlation in cent study task #8205

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Common: add UPC coll selection flag, vertex-Z correlation in cent study task #8205

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87cf462
Common: add UPC coll selection flag for studies
ddobrigk Oct 29, 2024
755433d
Please consider the following formatting changes to #8205 (#8206)
alibuild Oct 29, 2024
4fb8ce1
Add BC selection flags for x-checks
ddobrigk Oct 29, 2024
7edd547
Update centralityStudy.cxx
ddobrigk Oct 29, 2024
e13a36c
Please consider the following formatting changes to #8205 (#8213)
alibuild Oct 29, 2024
8afa2a2
Update centralityStudy.cxx
ddobrigk Oct 29, 2024
aeb0704
Please consider the following formatting changes to #8205 (#8214)
alibuild Oct 29, 2024
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46 changes: 40 additions & 6 deletions Common/Tasks/centralityStudy.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -49,6 +49,14 @@ struct centralityStudy {

Configurable<bool> rejectITSinROFpileupStandard{"rejectITSinROFpileupStandard", false, "reject collisions in case of in-ROF ITS pileup (standard)"};
Configurable<bool> rejectITSinROFpileupStrict{"rejectITSinROFpileupStrict", false, "reject collisions in case of in-ROF ITS pileup (strict)"};
Configurable<bool> rejectCollInTimeRangeNarrow{"rejectCollInTimeRangeNarrow", false, "reject if extra colls in time range (narrow)"};

Configurable<bool> selectUPCcollisions{"selectUPCcollisions", false, "select collisions tagged with UPC flag"};

Configurable<bool> selectCollidingBCs{"selectCollidingBCs", true, "BC analysis: select colliding BCs"};
Configurable<bool> selectTVX{"selectTVX", true, "BC analysis: select TVX"};
Configurable<bool> selectFV0OrA{"selectFV0OrA", true, "BC analysis: select FV0OrA"};
Configurable<float> vertexZwithT0{"vertexZwithT0", 1000.0f, "require a certain vertex-Z in BC analysis"};

Configurable<float> minTimeDelta{"minTimeDelta", -1.0f, "reject collision if another collision is this close or less in time"};
Configurable<float> minFT0CforVertexZ{"minFT0CforVertexZ", 250, "minimum FT0C for vertex-Z profile calculation"};
Expand Down Expand Up @@ -104,6 +112,8 @@ struct centralityStudy {

histos.add("hFT0CvsPVz_BCs_All", "hFT0CvsPVz_BCs_All", kTProfile, {axisPVz});
histos.add("hFT0CvsPVz_BCs", "hFT0CvsPVz_BCs", kTProfile, {axisPVz});

histos.add("hVertexZ_BCvsCO", "hVertexZ_BCvsCO", kTH2D, {axisPVz, axisPVz});
}

if (do2DPlots) {
Expand Down Expand Up @@ -187,12 +197,22 @@ struct centralityStudy {
if (rejectITSinROFpileupStandard && !collision.selection_bit(o2::aod::evsel::kNoCollInRofStandard)) {
return;
}
histos.fill(HIST("hCollisionSelection"), 11 /* Not at same bunch pile-up */);
histos.fill(HIST("hCollisionSelection"), 11 /* Not ITS ROF pileup (standard) */);

if (rejectITSinROFpileupStrict && !collision.selection_bit(o2::aod::evsel::kNoCollInRofStrict)) {
return;
}
histos.fill(HIST("hCollisionSelection"), 12 /* Not at same bunch pile-up */);
histos.fill(HIST("hCollisionSelection"), 12 /* Not ITS ROF pileup (strict) */);

if (selectUPCcollisions && collision.flags() < 1) { // if zero then NOT upc, otherwise UPC
return;
}
histos.fill(HIST("hCollisionSelection"), 13 /* is UPC event */);

if (rejectCollInTimeRangeNarrow && !collision.selection_bit(o2::aod::evsel::kNoCollInTimeRangeNarrow)) {
return;
}
histos.fill(HIST("hCollisionSelection"), 14 /* Not ITS ROF pileup (strict) */);

// if we got here, we also finally fill the FT0C histogram, please
histos.fill(HIST("hNPVContributors"), collision.multPVTotalContributors());
Expand Down Expand Up @@ -232,20 +252,27 @@ struct centralityStudy {
genericProcessCollision(collision);
}

void processBCs(aod::MultBCs::iterator const& multbc)
void processBCs(soa::Join<aod::BC2Mults, aod::MultBCs>::iterator const& multbc, soa::Join<aod::Mults, aod::MultsExtra, aod::MultSelections, aod::CentFT0Cs, aod::MultsGlobal> const&)
{
// process BCs, calculate FT0C distribution
// conditionals suggested by FIT team (Jacek O. et al)
histos.fill(HIST("hBCSelection"), 0); // all BCs
if (!multbc.multBCColliding())
if (selectCollidingBCs && !multbc.multBCColliding())
return;
histos.fill(HIST("hBCSelection"), 1); // colliding
if (!multbc.multBCTVX())
if (selectTVX && !multbc.multBCTVX())
return;
histos.fill(HIST("hBCSelection"), 2); // TVX
if (!multbc.multBCFV0OrA())
if (selectFV0OrA && !multbc.multBCFV0OrA())
return;
histos.fill(HIST("hBCSelection"), 3); // FV0OrA
if (vertexZwithT0 < 100.0f) {
if (!multbc.multBCFT0PosZValid())
return;
if (TMath::Abs(multbc.multBCFT0PosZ()) > vertexZwithT0)
return;
}
histos.fill(HIST("hBCSelection"), 4); // FV0OrA

// if we got here, we also finally fill the FT0C histogram, please
histos.fill(HIST("hFT0C_BCs"), multbc.multBCFT0C());
Expand All @@ -255,6 +282,13 @@ struct centralityStudy {
histos.fill(HIST("hFT0CvsPVz_BCs"), multbc.multBCFT0PosZ(), multbc.multBCFT0C());
}
}

if (multbc.has_ft0Mult()) {
auto multco = multbc.ft0Mult_as<soa::Join<aod::Mults, aod::MultsExtra, aod::MultSelections, aod::CentFT0Cs, aod::MultsGlobal>>();
if (multbc.multBCFT0PosZValid()) {
histos.fill(HIST("hVertexZ_BCvsCO"), multco.multPVz(), multbc.multBCFT0PosZ());
}
}
}

PROCESS_SWITCH(centralityStudy, processCollisions, "per-collision analysis", false);
Expand Down
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