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[PWGEM] Fix for normalization of beauty cocktail. #11021

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Merged
feisenhu merged 1 commit into from
Apr 29, 2025
Merged

[PWGEM] Fix for normalization of beauty cocktail. #11021

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38 changes: 38 additions & 0 deletions PWGEM/Dilepton/Tasks/lmeeHFCocktail.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -81,7 +81,7 @@
float cut_pt[Nstages] = {0., 0., ptMin};
float cut_eta[Nstages] = {9999., 99999., etaMax};
for (int i = 0; i < Nstages; i++) {
if (pt[i] > cut_pt[i] && fabs(eta[i]) < cut_eta[i]) {

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[std-prefix] 

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if (pdg == 4)
hRapQuark[i]->Fill(p.cQuarkRap());
else if (pdg == 5)
Expand All @@ -101,7 +101,7 @@
float cut_pt[Nstages] = {0., 0., ptMin};
float cut_eta[Nstages] = {9999., 99999., etaMax};
for (int i = 0; i < Nstages; i++) {
if (pt[i] > cut_pt[i] && fabs(eta[i]) < cut_eta[i]) {

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[std-prefix] 

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hEta[i]->Fill(eta[i], weight[i]);
hPt[i]->Fill(pt[i], weight[i]);
hPtEta[i]->Fill(pt[i], eta[i], weight[i]);
Expand Down Expand Up @@ -138,7 +138,7 @@
}

for (int i = 0; i < Nstages; i++) {
if (pt1[i] > cut_pt[i] && pt2[i] > cut_pt[i] && fabs(eta1[i]) < cut_eta[i] && fabs(eta2[i]) < cut_eta[i]) {

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[std-prefix] 

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hMee[i]->Fill(mass[i], weight[i]);
hMeePtee[i]->Fill(mass[i], pt[i], weight[i]);
}
Expand All @@ -160,19 +160,57 @@

struct lmeehfcocktailprefilter {

HistogramRegistry registry{"registry", {}};
std::vector<std::shared_ptr<TH1>> hRapQuark;
Produces<o2::aod::HfTable> hfTable;
ConfigurableAxis fConfigRapBins{"cfgRapBins", {200, -10.f, 10.f}, "Quark rapidity binning"};

void init(o2::framework::InitContext&)
{
const int Nchannels = 2;
const char* typeNamesSingle[Nchannels] = {"b", "c"};
const char* typeTitlesSingle[Nchannels] = {"b", "c"};

AxisSpec rap_axis = {fConfigRapBins, "y_{b}"};

// quark histograms
for (int i = 0; i < Nchannels; i++) {
hRapQuark.push_back(registry.add<TH1>(Form("Quark_Rap_%s", typeNamesSingle[i]), Form("Rap Quark %s", typeTitlesSingle[i]), HistType::kTH1F, {rap_axis}, true));
}
}

void process(aod::McParticles const& mcParticles)
{
for (auto const& p : mcParticles) {
// Look at quarks which fragment
if (abs(p.pdgCode()) == 5 || abs(p.pdgCode()) == 4) {

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bool foundhadrons = kFALSE;
if (p.has_daughters()) {
const auto& daughtersSlice = p.daughters_as<aod::McParticles>();
for (auto& d : daughtersSlice) {
int pdgfragment = d.pdgCode();
if (static_cast<int>(abs(pdgfragment) / 100.) == abs(p.pdgCode()) || static_cast<int>(abs(pdgfragment) / 1000.) == abs(p.pdgCode())) {

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foundhadrons = kTRUE;
}
}
}
if (foundhadrons) {
if (abs(p.pdgCode()) == 4)

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hRapQuark[1]->Fill(p.y());
else if (abs(p.pdgCode()) == 5)

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hRapQuark[0]->Fill(p.y());
}
}

// Look at electrons
if (abs(p.pdgCode()) != 11 || o2::mcgenstatus::getHepMCStatusCode(p.statusCode()) != 1 || !p.has_mothers()) {

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hfTable(EFromHFType::kNoE, -1, -1, -1, -1, -1, -1, -999., -999.);
continue;
}

int mother_pdg = mcParticles.iteratorAt(p.mothersIds()[0]).pdgCode();
bool direct_charm_mother = abs(mother_pdg) < 1e+9 && (std::to_string(mother_pdg)[std::to_string(mother_pdg).length() - 3] == '4' || std::to_string(mother_pdg)[std::to_string(mother_pdg).length() - 4] == '4');

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if (abs(mother_pdg) == 443) {

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direct_charm_mother = false; // we don't want JPsi here
}
int cHadronId = -1;
Expand Down
10 changes: 6 additions & 4 deletions PWGEM/Dilepton/Utils/MCUtilities.h
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Expand Up @@ -481,14 +481,16 @@ int searchMothers(T& p, U& mcParticles, int pdg, bool equal)
for (int i : allmothersids) {
auto mother = mcParticles.iteratorAt(i);
int mpdg = mother.pdgCode();
if (abs(mpdg) == pdg && mpdg * p.pdgCode() > 0) { // check for quark
if (quark_id > -1 || next_mother_id > -1) { // we already found a possible candidate in the list of mothers, so now we have (at least) two
// if (abs(mpdg) == pdg && mpdg * p.pdgCode() > 0) { // check for quark
if (abs(mpdg) == pdg) { // check for quark to allow for beauty and charm + oscillation
if (quark_id > -1 || next_mother_id > -1) { // we already found a possible candidate in the list of mothers, so now we have (at least) two
// LOG(warning) << "Flavour tracking is ambiguous. Stopping here.";
return -1;
}
quark_id = i;
} else if ((static_cast<int>(abs(mpdg) / 100) == pdg || static_cast<int>(abs(mpdg) / 1000) == pdg) && mpdg * p.pdgCode() > 0) { // check for other mothers with flavour content
if (quark_id > -1 || next_mother_id > -1) { // we already found a possible candidate in the list of mothers, so now we have (at least) two
//} else if ((static_cast<int>(abs(mpdg) / 100) == pdg || static_cast<int>(abs(mpdg) / 1000) == pdg) && mpdg * p.pdgCode() > 0) { // check for other mothers with flavour content
} else if ((static_cast<int>(abs(mpdg) / 100) == pdg || static_cast<int>(abs(mpdg) / 1000) == pdg)) { // check for other mothers with flavour content to allow for beauty and charm
if (quark_id > -1 || next_mother_id > -1) { // we already found a possible candidate in the list of mothers, so now we have (at least) two
// LOG(warning) << "Flavour tracking is ambiguous. Stopping here.";
return -1;
}
Expand Down
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