New values and cuts
[u/mrichter/AliRoot.git] / PWG2 / RESONANCES / AliRsnCutPrimaryVertex.cxx
CommitLineData
96ab9736 1//
2// Class AliRsnCutPrimaryVertex
3//
ceaa78d3 4// This cut implementation checks the quality of event primary vertex.
5// It currently works only with ESD events (not AOD).
96ab9736 6//
7// authors: Martin Vala (martin.vala@cern.ch)
8// Alberto Pulvirenti (alberto.pulvirenti@ct.infn.it)
9//
96ab9736 10
96ab9736 11#include "AliRsnCutPrimaryVertex.h"
12
13ClassImp(AliRsnCutPrimaryVertex)
14
15//_________________________________________________________________________________________________
96ab9736 16AliRsnCutPrimaryVertex::AliRsnCutPrimaryVertex
02e8aa99 17(const char *name, Double_t maxVz, Int_t nContributors, Bool_t acceptTPC) :
2a1c7696 18 AliRsnCut(name, AliRsnCut::kEvent, 0, nContributors - 1, 0.0, maxVz),
19 fAcceptTPC(acceptTPC),
20 fCheckPileUp(kFALSE)
96ab9736 21{
22//
23// Main constructor.
ceaa78d3 24// Defines the cut range between 0 and
25// the minimum required number of contributors.
26// The cut will be passed when if the event has a
27// primary vertex with number of contributors outside this interval.
28// ---
29// If the 'acceptTPC' argument is true, events with TPC
30// primary vertex will be checked, otherwise they will be
31// rejected by default.
32// ---
33// Since the range check uses the '>=' and '<=', the high edge
34// must be decreased by 1 to get the right behaviour, since this is integer.
96ab9736 35//
02e8aa99 36
2a1c7696 37 fMinD = 0.0;
38 fMaxD = maxVz + 1E-6;
96ab9736 39}
40
41//_________________________________________________________________________________________________
32992791 42Bool_t AliRsnCutPrimaryVertex::IsSelected(TObject *object)
96ab9736 43{
44//
45// Cut checker
46//
2a1c7696 47
99261e24 48 // coherence check
49 // which also fills data member objects
50 if (!TargetOK(object)) return kFALSE;
51
2a1c7696 52 // retrieve ESD event
99261e24 53 AliESDEvent *esd = fEvent->GetRefESD();
54 AliAODEvent *aod = fEvent->GetRefAOD();
2a1c7696 55
56 if (esd) {
57 // pile-up check
58 if (fCheckPileUp) {
59 if (esd->IsPileupFromSPD()) return kFALSE;
5faf5a07 60 }
2a1c7696 61
62 // get the best primary vertex:
63 // first try the one with tracks
64 const AliESDVertex *vTrk = esd->GetPrimaryVertexTracks();
65 const AliESDVertex *vSPD = esd->GetPrimaryVertexSPD();
66 const AliESDVertex *vTPC = esd->GetPrimaryVertexTPC();
67 Int_t ncTrk = -1;
68 Int_t ncSPD = -1;
69 Int_t ncTPC = -1;
70 Double_t vzTrk = 1000000.0;
71 Double_t vzSPD = 1000000.0;
72 Double_t vzTPC = 1000000.0;
73 if (vTrk) vzTrk = TMath::Abs(vTrk->GetZv());
74 if (vSPD) vzSPD = TMath::Abs(vSPD->GetZv());
75 if (vTPC) vzTPC = TMath::Abs(vTPC->GetZv());
76 if (vTrk) ncTrk = (Int_t)vTrk->GetNContributors();
77 if (vSPD) ncSPD = (Int_t)vSPD->GetNContributors();
78 if (vTPC) ncTPC = (Int_t)vTPC->GetNContributors();
79 if (vTrk && ncTrk > 0) {
80 fCutValueI = ncTrk;
81 fCutValueD = vzTrk;
82 } else if (vSPD && ncSPD > 0) {
83 fCutValueI = ncSPD;
84 fCutValueD = vzSPD;
85 } else if (vTPC && ncTPC > 0) {
86 if (!fAcceptTPC)
87 return kFALSE;
88 else {
89 fCutValueI = ncTPC;
90 fCutValueD = vzTPC;
91 }
92 } else
93 return kFALSE;
94 } else if (aod) {
95 // pile-up check is not yet available for AODs
96
97 // lines suggested by Andrea to reject TPC-only events
98 if (!fAcceptTPC) {
99 if (!aod->GetPrimaryVertexSPD()) return kFALSE;
100 else if (aod->GetPrimaryVertexSPD()->GetNContributors() < 1) return kFALSE;
101 }
102
103 AliAODVertex *prim = (AliAODVertex*)aod->GetPrimaryVertex();
104 if (!prim) return kFALSE;
105
106 fCutValueI = prim->GetNContributors();
107 fCutValueD = prim->GetZ();
108 } else
5faf5a07 109 return kFALSE;
a378358c 110
2a1c7696 111 // output
112 Bool_t result = ((!OkRangeI()) && OkRangeD());
113 return result;
96ab9736 114}
aa24e021 115
116//_________________________________________________________________________________________________
117void AliRsnCutPrimaryVertex::Print(const Option_t *) const
118{
119//
120// Print information on this cut
121//
122
2a1c7696 123 AliInfo(Form("Cut name : %s", GetName()));
124 AliInfo(Form("Accepting TPC primary vertex : %s", (fAcceptTPC ? "YES" : "NO")));
125 AliInfo(Form("Contributors range (outside) : %d - %d", fMinI, fMaxI));
126 AliInfo(Form("Z-vertex range (inside) : %f - %f", fMinD, fMaxD));
aa24e021 127}