2 // All cuts for single pions in phi analysis 2010,
3 // based on track quality and particle identification
5 // Author: Serguey Kiselev.
12 #include "AliPIDResponse.h"
13 #include "AliRsnCutDaughterKStar2010PP.h"
15 ClassImp(AliRsnCutDaughterKStar2010PP)
17 //__________________________________________________________________________________________________
18 AliRsnCutDaughterKStar2010PP::AliRsnCutDaughterKStar2010PP(const char *name, AliPID::EParticleType pid) :
19 AliRsnCut(name, AliRsnTarget::kDaughter),
22 fCutQuality(Form("%sQuality", name))
26 // Initialize track quality cuts to 2010 defaults
29 fCutQuality.SetPtRange(0.15, 1E+20);
30 fCutQuality.SetEtaRange(-0.8, 0.8);
31 fCutQuality.SetDCARPtFormula("0.0182+0.0350/pt^1.01");
32 fCutQuality.SetDCAZmax(2.0);
33 fCutQuality.SetSPDminNClusters(1);
34 fCutQuality.SetITSminNClusters(0);
35 fCutQuality.SetITSmaxChi2(1E+20);
36 fCutQuality.SetTPCminNClusters(70);
37 fCutQuality.SetTPCmaxChi2(4.0);
38 fCutQuality.SetRejectKinkDaughters();
39 fCutQuality.SetAODTestFilterBit(5);
42 //__________________________________________________________________________________________________
43 Bool_t AliRsnCutDaughterKStar2010PP::IsSelected(TObject *obj)
50 if (!TargetOK(obj)) return kFALSE;
53 AliVTrack *track = dynamic_cast<AliVTrack *>(fDaughter->GetRef());
54 if (!track) return kFALSE;
57 if ((track->GetStatus() & AliESDtrack::kTPCin ) == 0) return kFALSE;
58 if ((track->GetStatus() & AliESDtrack::kTPCrefit) == 0) return kFALSE;
59 if ((track->GetStatus() & AliESDtrack::kITSrefit) == 0) return kFALSE;
62 if (!fCutQuality.IsSelected(obj)) return kFALSE;
64 // if no PID is required, accept
65 if (fNoPID) return kTRUE;
67 // check initialization of PID object
68 AliPIDResponse *pid = fEvent->GetPIDResponse();
70 AliFatal("NULL PID response");
74 // check if TOF is matched
75 // and computes all values used in the PID cut
76 Bool_t isTOF = MatchTOF(track);
77 Double_t pTPC = track->GetTPCmomentum();
78 Double_t p = track->P();
79 Double_t nsTPC = TMath::Abs(pid->NumberOfSigmasTPC(track, fPID));
80 Double_t nsTOF = isTOF ? TMath::Abs(pid->NumberOfSigmasTOF(track, fPID)) : 1E20;
81 Double_t maxTPC = 1E20;
82 Double_t maxTOF = 1E20;
84 // applies the cut differently depending on the PID and the momentum
86 // TPC: 5sigma cut for all
87 if (nsTPC > 5.0) return kFALSE;
88 // TOF: 3sigma below 1.5 GeV, 2sigma above
89 if (p < 1.5) maxTOF = 3.0; else maxTOF = 2.0;
90 return (nsTOF <= maxTOF);
93 // all below 350 MeV: 5sigma
94 // all between 350 and 500 MeV: 3sigma
95 // pions above 500 MeV: 2sigma
96 // kaons between 500 and 700 MeV: 2sigma
97 // kaons above 700 MeV: rejected
100 else if (pTPC > 0.35 && pTPC <= 0.5)
103 if (fPID == AliPID::kPion)
105 else if (fPID == AliPID::kKaon) {
112 return (nsTPC <= maxTPC);