2 // Class AliRsnCutPrimaryVertex
4 // This cut implementation checks the quality of event primary vertex.
5 // It currently works only with ESD events (not AOD).
7 // authors: Martin Vala (martin.vala@cern.ch)
8 // Alberto Pulvirenti (alberto.pulvirenti@ct.infn.it)
11 #include "AliRsnCutPrimaryVertex.h"
13 ClassImp(AliRsnCutPrimaryVertex)
15 //_________________________________________________________________________________________________
16 AliRsnCutPrimaryVertex::AliRsnCutPrimaryVertex() :
17 AliRsnCut(AliRsnCut::kEvent),
21 // Default constructor.
25 //_________________________________________________________________________________________________
26 AliRsnCutPrimaryVertex::AliRsnCutPrimaryVertex
27 (const char *name, Double_t maxVz, Int_t nContributors, Bool_t acceptTPC) :
28 AliRsnCut(name, AliRsnCut::kEvent, 0, nContributors - 1),
33 // Defines the cut range between 0 and
34 // the minimum required number of contributors.
35 // The cut will be passed when if the event has a
36 // primary vertex with number of contributors outside this interval.
38 // If the 'acceptTPC' argument is true, events with TPC
39 // primary vertex will be checked, otherwise they will be
40 // rejected by default.
42 // Since the range check uses the '>=' and '<=', the high edge
43 // must be decreased by 1 to get the right behaviour, since this is integer.
50 //_________________________________________________________________________________________________
51 Bool_t AliRsnCutPrimaryVertex::IsSelected(TObject *obj1, TObject* /*obj2*/)
58 AliRsnEvent *rsn = dynamic_cast<AliRsnEvent*>(obj1);
59 if (!rsn) return kFALSE;
60 AliESDEvent *esd = dynamic_cast<AliESDEvent*>(rsn->GetRef());
63 AliDebug(AliLog::kDebug+2, "NO ESD");
67 // get the best primary vertex:
68 // first try the one with tracks
69 const AliESDVertex *vTrk = esd->GetPrimaryVertexTracks();
70 const AliESDVertex *vSPD = esd->GetPrimaryVertexSPD();
71 const AliESDVertex *vTPC = esd->GetPrimaryVertexTPC();
72 Double_t vzTrk = 2.0 * fMaxD;
73 Double_t vzSPD = 2.0 * fMaxD;
74 Double_t vzTPC = 2.0 * fMaxD;
75 if (vTrk) vzTrk = TMath::Abs(vTrk->GetZv());
76 if (vSPD) vzSPD = TMath::Abs(vSPD->GetZv());
77 if (vTPC) vzTPC = TMath::Abs(vTPC->GetZv());
78 AliDebug(AliLog::kDebug + 1, Form("Vertex with tracks: contributors = %d, abs(vz) = %f", vTrk->GetNContributors(), vzTrk));
79 AliDebug(AliLog::kDebug + 1, Form("Vertex with SPD, contributors = %d, abs(vz) = %f", vSPD->GetNContributors(), vzSPD));
80 AliDebug(AliLog::kDebug + 1, Form("Vertex with TPC, contributors = %d, abs(vz) = %f", vTPC->GetNContributors(), vzTPC));
83 fCutValueI = vTrk->GetNContributors();
86 else if (vSPD->GetStatus())
88 fCutValueI = vSPD->GetNContributors();
91 else if (vTPC->GetStatus() && fAcceptTPC)
93 fCutValueI = vTPC->GetNContributors();
99 return OkRangeI() && OkRangeD();