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64 changes: 33 additions & 31 deletions PWGUD/Tasks/sgExclOmega.cxx
Original file line number Diff line number Diff line change
Expand Up @@ -39,7 +39,7 @@ struct SGExclOmega {
Configurable<float> FDDC_cut{"FDDC", 10000., "FDDC threshold"};
Configurable<float> ZDC_cut{"ZDC", 10., "ZDC threshold"};
// Track Selections
Configurable<float> PV_cut{"PV_cut", 0.0, "Use Only PV tracks"};
Configurable<float> PV_cut{"PV_cut", 1.0, "Use Only PV tracks"};
Configurable<float> dcaZ_cut{"dcaZ_cut", 2.0, "dcaZ cut"};
Configurable<float> dcaXY_cut{"dcaXY_cut", 2.0, "dcaXY cut (0 for Pt-function)"};
Configurable<float> tpcChi2_cut{"tpcChi2_cut", 4, "Max tpcChi2NCl"};
Expand Down Expand Up @@ -79,7 +79,8 @@ struct SGExclOmega {
{"ss_O_pT_pid_pi0", "pT (GeV/c); Entries", {HistType::kTH1F, {{5000, 0, 10}}}},
{"ss_O_eTa_pid_pi0", "eTa (GeV/c); Entries", {HistType::kTH1F, {{100, -1., 1.}}}},
{"ss_O_invm_pid_pi0", "Mass (GeV/c^2); Entries", {HistType::kTH1F, {{5000, 0, 10}}}},
{"os_O_pt_invm_pid_pi0", "pt vs Mass", {HistType::kTH2F, {{500, 0, 10.}, {500, 0, 2.5}}}}}};
{"os_O_pt_invm_pid_pi0", "pt vs Mass", {HistType::kTH2F, {{500, 0, 10.}, {500, 0, 2.5}}}},
}};
using udtracks = soa::Join<aod::UDTracks, aod::UDTracksExtra, aod::UDTracksPID>;
using udtracksfull = soa::Join<aod::UDTracks, aod::UDTracksPID, aod::UDTracksExtra, aod::UDTracksFlags, aod::UDTracksDCA>;
using UDCollisionsFull = soa::Join<aod::UDCollisions, aod::SGCollisions, aod::UDCollisionsSels, aod::UDZdcsReduced>; //
Expand All @@ -99,6 +100,7 @@ struct SGExclOmega {
TLorentzVector v4;
TLorentzVector v5;
TLorentzVector v01;
std::vector<TLorentzVector> els, pis;
TLorentzVector v00;
// int truegapSide = sgSelector.trueGap(collision);
// int truegapSide = sgSelector.trueGap(collision, FV0_cut, ZDC_cut);
Expand All @@ -109,38 +111,38 @@ struct SGExclOmega {
registry.fill(HIST("GapSide"), gapSide);
registry.fill(HIST("TrueGapSide"), truegapSide);
gapSide = truegapSide;
if (gapSide != 2)
return;
// if (gapSide!=2) return;
int pvtracks = 0;
int sign = 0;
int esign = 0;
int nElec = 0;
for (auto& t0 : tracks) {
if (trackselector(t0, parameters) && t0.isPVContributor()) {
pvtracks++;
sign += t0.sign();
if (selectionPIDElec(t0, use_tof, nsigmatpc_cut, nsigmatof_cut)) {
nElec++;
esign += t0.sign();
a.SetXYZM(t0.px(), t0.py(), t0.pz(), o2::constants::physics::MassElectron);
els.push_back(a);
} else {
a.SetXYZM(t0.px(), t0.py(), t0.pz(), o2::constants::physics::MassPionCharged);
pis.push_back(a);
}
}
}
// Look for D0 and D0bar
if (pvtracks != 6)
// if (pvtracks != 6) return;
if (nElec != 4 || esign != 0 || pvtracks < 6)
return;
for (auto& [t0, t1, t2, t3, t4, t5] : combinations(tracks, tracks, tracks, tracks, tracks, tracks)) {
// PID cut - t0=K, t1=pi
if (!trackselector(t0, parameters) || !trackselector(t1, parameters))
// Apply pion hypothesis and create pairs
v00 = els[0] + els[1] + els[2] + els[3];
for (auto& [t0, t1] : combinations(tracks, tracks)) {
if (selectionPIDElec(t0, use_tof, nsigmatpc_cut, nsigmatof_cut) || selectionPIDElec(t1, use_tof, nsigmatpc_cut, nsigmatof_cut))
continue;
if (!trackselector(t2, parameters) || !trackselector(t3, parameters))
continue;
if (!trackselector(t4, parameters) || !trackselector(t5, parameters))
continue;
// Apply pion hypothesis and create pairs
v0.SetXYZM(t0.px(), t0.py(), t0.pz(), o2::constants::physics::MassPionCharged);
v1.SetXYZM(t1.px(), t1.py(), t1.pz(), o2::constants::physics::MassPionCharged);
v2.SetXYZM(t2.px(), t2.py(), t2.pz(), o2::constants::physics::MassElectron);
v3.SetXYZM(t3.px(), t3.py(), t3.pz(), o2::constants::physics::MassElectron);
v4.SetXYZM(t4.px(), t4.py(), t4.pz(), o2::constants::physics::MassElectron);
v5.SetXYZM(t5.px(), t5.py(), t5.pz(), o2::constants::physics::MassElectron);
v01 = v0 + v1 + v2 + v3 + v4 + v5;
v00 = v2 + v3 + v4 + v5;
v1.SetXYZM(t0.px(), t0.py(), t0.pz(), o2::constants::physics::MassPionCharged);
v01 = v0 + v1 + v00;
// Opposite sign pairs
if (sign == 0) {
if (t0.sign() != t1.sign()) {
registry.fill(HIST("os_O_pT"), v01.Pt());
registry.fill(HIST("os_O_eTa"), v01.Eta());
registry.fill(HIST("os_O_invm"), v01.M());
Expand All @@ -151,20 +153,20 @@ struct SGExclOmega {
registry.fill(HIST("ss_O_eTa"), v01.Eta());
registry.fill(HIST("ss_O_invm"), v01.M());
}
if (selectionPIDPion(t0, use_tof, nsigmatpc_cut, nsigmatof_cut) && selectionPIDPion(t1, use_tof, nsigmatpc_cut, nsigmatof_cut) && selectionPIDElec(t2, use_tof, nsigmatpc_cut, nsigmatof_cut) && selectionPIDElec(t3, use_tof, nsigmatpc_cut, nsigmatof_cut) && selectionPIDElec(t4, use_tof, nsigmatpc_cut, nsigmatof_cut) && selectionPIDElec(t5, use_tof, nsigmatpc_cut, nsigmatof_cut)) {
if (sign == 0) {
if (selectionPIDPion(t0, use_tof, nsigmatpc_cut, nsigmatof_cut) && selectionPIDPion(t1, use_tof, nsigmatpc_cut, nsigmatof_cut)) {
if (t0.sign() != t1.sign()) {
registry.fill(HIST("os_O_pT_pid"), v01.Pt());
registry.fill(HIST("os_O_eTa_pid"), v01.Eta());
registry.fill(HIST("os_O_invm_pid"), v01.M());
registry.fill(HIST("os_O_pt_invm_pid"), v01.Pt(), v01.M());
registry.fill(HIST("pi0_invm_pid"), v00.M());
} else {
registry.fill(HIST("ss_O_pT_pid"), v01.Pt());
registry.fill(HIST("ss_O_eTa_pid"), v01.Eta());
registry.fill(HIST("ss_O_invm_pid"), v01.M());
registry.fill(HIST("ss_O_pT_pid_pi0"), v01.Pt());
registry.fill(HIST("ss_O_eTa_pid_pi0"), v01.Eta());
registry.fill(HIST("ss_O_invm_pid_pi0"), v01.M());
}
if (abs(v00.M() - o2::constants::physics::MassPionNeutral) < 0.01) {
if (sign == 0) {

if (abs(v00.M() - o2::constants::physics::MassPionNeutral) < 0.1) {
if (t0.sign() != t1.sign()) {
registry.fill(HIST("os_O_pT_pid_pi0"), v01.Pt());
registry.fill(HIST("os_O_eTa_pid_pi0"), v01.Eta());
registry.fill(HIST("os_O_invm_pid_pi0"), v01.M());
Expand Down