Add 3 prong secondary vertex histograms + fix histogram ranges (#4405)

Author: ginnocen

Analysis/Tasks/PWGHF/HFTrackIndexSkimsCreator.cxx

@@ -88,9 +88,12 @@ struct HFTrackIndexSkimsCreator {
 
   OutputObj<TH1F> hvtx_x_out{TH1F("hvtx_x", "2-track vtx", 1000, -2.0, 2.0)};
   OutputObj<TH1F> hvtx_y_out{TH1F("hvtx_y", "2-track vtx", 1000, -2.0, 2.0)};
-  OutputObj<TH1F> hvtx_z_out{TH1F("hvtx_z", "2-track vtx", 1000, -10.0, 10.0)};
+  OutputObj<TH1F> hvtx_z_out{TH1F("hvtx_z", "2-track vtx", 1000, -20.0, 20.0)};
   OutputObj<TH1F> hmass2{TH1F("hmass2", "; Inv Mass (GeV/c^{2})", 500, 0, 5.0)};
   OutputObj<TH1F> hmass3{TH1F("hmass3", "; Inv Mass (GeV/c^{2})", 500, 1.6, 2.1)};
+  OutputObj<TH1F> hvtx3_x_out{TH1F("hvtx3_x", "3-track vtx", 1000, -2.0, 2.0)};
+  OutputObj<TH1F> hvtx3_y_out{TH1F("hvtx3_y", "3-track vtx", 1000, -2.0, 2.0)};
+  OutputObj<TH1F> hvtx3_z_out{TH1F("hvtx3_z", "3-track vtx", 1000, -20.0, 20.0)};
 
   Filter filterSelectTracks = aod::seltrack::issel == 1;
   using SelectedTracks = soa::Filtered<soa::Join<aod::Tracks, aod::TracksCov, aod::TracksExtra, aod::SelTrack>>;
@@ -218,13 +221,17 @@ struct HFTrackIndexSkimsCreator {
             df3.getTrack(0).getPxPyPzGlo(pvec0);
             df3.getTrack(1).getPxPyPzGlo(pvec1);
             df3.getTrack(2).getPxPyPzGlo(pvec2);
+            const auto& secondaryVertex3 = df3.getPCACandidate();
 
             // calculate invariant mass
             arr3Mom = array{pvec0, pvec1, pvec2};
             mass3PiKPi = RecoDecay::M(std::move(arr3Mom), array{massPi, massK, massPi});
 
             if (b_dovalplots) {
               hmass3->Fill(mass3PiKPi);
+              hvtx3_x_out->Fill(secondaryVertex3[0]);
+              hvtx3_y_out->Fill(secondaryVertex3[1]);
+              hvtx3_z_out->Fill(secondaryVertex3[2]);
             }
 
             // fill table row

Analysis/Tasks/PWGHF/taskD0.cxx

@@ -39,10 +39,10 @@ struct TaskD0 {
   OutputObj<TH1F> hptcand{TH1F("hptcand", "pt candidate", 100, 0, 10.0)};
   OutputObj<TH1F> hptprong0{TH1F("hptprong0", "pt prong0", 100, 0, 10.0)};
   OutputObj<TH1F> hptprong1{TH1F("hptprong1", "pt prong1", 100, 0, 10.0)};
-  OutputObj<TH1F> hdeclength{TH1F("declength", "decay length", 100, 0., 1.0)};
-  OutputObj<TH1F> hdeclengthxy{TH1F("declengthxy", "decay length xy", 100, 0., 1.0)};
+  OutputObj<TH1F> hdeclength{TH1F("declength", "decay length", 200, 0., 2.0)};
+  OutputObj<TH1F> hdeclengthxy{TH1F("declengthxy", "decay length xy", 200, 0., 2.0)};
   OutputObj<TH1F> hd0{TH1F("hd0", "dca xy to prim. vertex (cm)", 100, -1.0, 1.0)};
-  OutputObj<TH1F> hd0d0{TH1F("hd0d0", "product of dca xy to prim. vertex (cm^{2})", 100, -1.0, 1.0)};
+  OutputObj<TH1F> hd0d0{TH1F("hd0d0", "product of dca xy to prim. vertex (cm^{2})", 500, -1.0, 1.0)};
   OutputObj<TH1F> hCTS{TH1F("hCTS", "cos #it{#theta}*", 120, -1.1, 1.1)};
   OutputObj<TH1F> hCt{TH1F("hCt", "proper lifetime * #it{c} (cm)", 120, -20, 100)};
   OutputObj<TH1F> hEta{TH1F("hEta", "#it{#eta}", 100, -2, 2)};