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659ef4f0 | 1 | // |
2 | // Class AliRsnCutPIDTPC | |
3 | // | |
4 | // General implementation of a single cut strategy, which can be: | |
5 | // - a value contained in a given interval [--> IsBetween() ] | |
6 | // - a value equal to a given reference [--> MatchesValue()] | |
7 | // | |
8 | // In all cases, the reference value(s) is (are) given as data members | |
9 | // and each kind of cut requires a given value type (Int, UInt, Double), | |
10 | // but the cut check procedure is then automatized and chosen thanks to | |
11 | // an enumeration of the implemented cut types. | |
12 | // At the end, the user (or any other point which uses this object) has | |
13 | // to use the method IsSelected() to check if this cut has been passed. | |
14 | // | |
15 | // authors: Martin Vala (martin.vala@cern.ch) | |
16 | // Alberto Pulvirenti (alberto.pulvirenti@ct.infn.it) | |
17 | // | |
18 | ||
223b8750 | 19 | #include "AliAnalysisManager.h" |
20 | #include "AliESDInputHandler.h" | |
c865cb1d | 21 | #include "AliESDpid.h" |
22 | #include "AliAODpidUtil.h" | |
23 | ||
659ef4f0 | 24 | #include "AliRsnCutPIDTPC.h" |
25 | ||
26 | ClassImp(AliRsnCutPIDTPC) | |
27 | ||
28 | //_________________________________________________________________________________________________ | |
29 | AliRsnCutPIDTPC::AliRsnCutPIDTPC | |
80e49c8b | 30 | (const char *name, AliPID::EParticleType type, Double_t min, Double_t max, Bool_t rejectOutside) : |
2a1c7696 | 31 | AliRsnCut(name, AliRsnCut::kDaughter, min, max), |
2a1c7696 | 32 | fRejectOutside(rejectOutside), |
33 | fMomMin(0.0), | |
34 | fMomMax(1E+20), | |
35 | fRefType(type), | |
c865cb1d | 36 | fESDpid(0x0), |
37 | fAODpid(0x0) | |
659ef4f0 | 38 | { |
39 | // | |
40 | // Main constructor. | |
41 | // | |
42 | } | |
43 | ||
44 | //_________________________________________________________________________________________________ | |
45 | AliRsnCutPIDTPC::AliRsnCutPIDTPC | |
46 | (const AliRsnCutPIDTPC& copy) : | |
2a1c7696 | 47 | AliRsnCut(copy), |
2a1c7696 | 48 | fRejectOutside(copy.fRejectOutside), |
49 | fMomMin(copy.fMomMin), | |
50 | fMomMax(copy.fMomMax), | |
51 | fRefType(copy.fRefType), | |
52 | fESDpid(copy.fESDpid), | |
53 | fAODpid(copy.fAODpid) | |
659ef4f0 | 54 | { |
55 | // | |
56 | // Copy constructor. | |
57 | // | |
58 | } | |
59 | ||
60 | //_________________________________________________________________________________________________ | |
61 | AliRsnCutPIDTPC& AliRsnCutPIDTPC::operator=(const AliRsnCutPIDTPC& copy) | |
62 | { | |
63 | // | |
64 | // Assignment operator | |
65 | // | |
66 | ||
2a1c7696 | 67 | AliRsnCut::operator=(copy); |
659ef4f0 | 68 | |
2a1c7696 | 69 | fRejectOutside = copy.fRejectOutside; |
70 | fMomMin = copy.fMomMin; | |
71 | fMomMax = copy.fMomMax; | |
72 | fRefType = copy.fRefType; | |
73 | fESDpid = copy.fESDpid; | |
74 | fAODpid = copy.fAODpid; | |
75 | ||
76 | return (*this); | |
659ef4f0 | 77 | } |
78 | ||
79 | //_________________________________________________________________________________________________ | |
80 | void AliRsnCutPIDTPC::SetBBParam(Double_t p0, Double_t p1, Double_t p2, Double_t p3, Double_t p4) | |
81 | { | |
82 | // | |
83 | // Properly set the Bethe-Bloch parameters in all places where it is needed. | |
84 | // | |
85 | ||
c865cb1d | 86 | fBB[0] = p0; |
87 | fBB[1] = p1; | |
88 | fBB[2] = p2; | |
89 | fBB[3] = p3; | |
90 | fBB[4] = p4; | |
659ef4f0 | 91 | } |
92 | ||
93 | //_________________________________________________________________________________________________ | |
94 | Bool_t AliRsnCutPIDTPC::IsSelected(TObject *object) | |
95 | { | |
96 | // | |
97 | // Cut checker. | |
98 | // | |
99 | ||
2a1c7696 | 100 | // coherence check |
101 | if (!TargetOK(object)) return kFALSE; | |
102 | ||
2a1c7696 | 103 | // common evaluation variables |
104 | Double_t mom; | |
105 | AliESDtrack *esdTrack = fDaughter->GetRefESDtrack(); | |
106 | AliAODTrack *aodTrack = fDaughter->GetRefAODtrack(); | |
107 | ||
2654b757 | 108 | // get inner momentum, needed for BB computation |
c865cb1d | 109 | if (esdTrack) { |
110 | if (!esdTrack->GetInnerParam()) { | |
111 | AliDebug(AliLog::kDebug + 2, "No inner param"); | |
112 | return kFALSE; | |
113 | } | |
2a1c7696 | 114 | mom = esdTrack->GetInnerParam()->P(); |
c865cb1d | 115 | } else if (aodTrack) { |
116 | if (!aodTrack->GetDetPid()) { | |
117 | AliDebug(AliLog::kDebug + 2, "No def-pid object"); | |
118 | return kFALSE; | |
119 | } | |
2a1c7696 | 120 | mom = aodTrack->GetDetPid()->GetTPCmomentum(); |
c865cb1d | 121 | if (mom < 1E-6) return kFALSE; |
122 | } else { | |
2a1c7696 | 123 | AliDebug(AliLog::kDebug + 2, Form("Impossible to process an object of type '%s'. Cut applicable only to ESD/AOD tracks", fDaughter->GetRef()->ClassName())); |
124 | return kFALSE; | |
125 | } | |
2a1c7696 | 126 | |
127 | // assign PID nsigmas to default cut check value | |
128 | // since bad object types are rejected before, here we have an ESD track or AOD track | |
c865cb1d | 129 | if (esdTrack) { |
130 | if (!fESDpid) { | |
131 | fESDpid = new AliESDpid; | |
132 | fESDpid->GetTPCResponse().SetBetheBlochParameters(fBB[0], fBB[1], fBB[2], fBB[3], fBB[4]); | |
133 | } | |
134 | fCutValueD = fESDpid->GetTPCResponse().GetNumberOfSigmas(mom, esdTrack->GetTPCsignal(), esdTrack->GetTPCsignalN(), fRefType); | |
135 | } else { | |
136 | if (!fAODpid) { | |
137 | fAODpid = new AliAODpidUtil; | |
138 | fAODpid->GetTPCResponse().SetBetheBlochParameters(fBB[0], fBB[1], fBB[2], fBB[3], fBB[4]); | |
139 | } | |
140 | if (aodTrack->GetTPCsignalN() == 0) aodTrack->GetDetPid()->SetTPCsignalN(aodTrack->GetTPCNcls()); | |
141 | fCutValueD = fAODpid->NumberOfSigmasTPC(aodTrack, fRefType); | |
142 | } | |
2a1c7696 | 143 | |
144 | // use AliRsnCut default method to check cut | |
2654b757 | 145 | Bool_t cutCheck = OkRangeD(); |
146 | ||
147 | // now check the momentum: | |
148 | // -- if it stays inside the accepted range, track just checked | |
149 | // with respect to the nsigma band | |
150 | // -- if it stays outside the accepted range and 'fRejectOutside' is kTRUE, | |
151 | // track is always rejected, while if 'fRejectOutside' is kFALSE, | |
152 | // track is accepted if it stays inside the nsigma band | |
153 | if ((mom >= fMomMin && mom <= fMomMax)) | |
154 | return cutCheck; | |
155 | else { | |
156 | AliDebug(AliLog::kDebug + 2, Form("Track momentum = %.5f, outside allowed range", mom)); | |
157 | return ((!fRejectOutside) && cutCheck); | |
158 | } | |
659ef4f0 | 159 | } |
160 | ||
161 | //_________________________________________________________________________________________________ | |
162 | void AliRsnCutPIDTPC::Print(const Option_t *) const | |
163 | { | |
164 | // | |
165 | // Print information on this cut | |
166 | // | |
167 | ||
2a1c7696 | 168 | AliInfo(Form("Cut name : %s", GetName())); |
169 | AliInfo(Form("--> cut range (nsigma) : %.3f %.3f", fMinD, fMaxD)); | |
170 | AliInfo(Form("--> momentum range : %.3f %.3f", fMomMin, fMomMax)); | |
171 | AliInfo(Form("--> tracks outside range are: %s", (fRejectOutside ? "rejected" : "accepted"))); | |
659ef4f0 | 172 | } |