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c865cb1d | 1 | // |
2 | // Class AliRsnCutPIDNSigma | |
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 | ||
19 | #include "AliPIDResponse.h" | |
20 | #include "AliAnalysisManager.h" | |
21 | #include "AliInputEventHandler.h" | |
22 | #include "AliMultiInputEventHandler.h" | |
23 | ||
24 | #include "AliRsnCutPIDNSigma.h" | |
25 | ||
26 | ClassImp(AliRsnCutPIDNSigma) | |
27 | ||
64129b35 | 28 | //_________________________________________________________________________________________________ |
29 | AliRsnCutPIDNSigma::AliRsnCutPIDNSigma() : | |
30 | AliRsnCut("cut", AliRsnTarget::kDaughter), | |
31 | fSpecies(AliPID::kUnknown), | |
32 | fDetector(kDetectors), | |
33 | fRejectUnmatched(kFALSE), | |
34 | fMomMin(0.0), | |
35 | fMomMax(1E20), | |
36 | fNSigma(1E20) | |
37 | { | |
38 | // | |
39 | // Main constructor. | |
40 | // | |
41 | } | |
42 | ||
c865cb1d | 43 | //_________________________________________________________________________________________________ |
44 | AliRsnCutPIDNSigma::AliRsnCutPIDNSigma | |
45 | (const char *name, AliPID::EParticleType species, EDetector det, Double_t nsigma) : | |
64129b35 | 46 | AliRsnCut(name, AliRsnTarget::kDaughter), |
c865cb1d | 47 | fSpecies(species), |
48 | fDetector(det), | |
64129b35 | 49 | fRejectUnmatched(kFALSE), |
c865cb1d | 50 | fMomMin(0.0), |
f34f960b | 51 | fMomMax(1E20), |
64129b35 | 52 | fNSigma(nsigma) |
c865cb1d | 53 | { |
54 | // | |
55 | // Main constructor. | |
56 | // | |
57 | } | |
58 | ||
59 | //_________________________________________________________________________________________________ | |
60 | AliRsnCutPIDNSigma::AliRsnCutPIDNSigma | |
61 | (const AliRsnCutPIDNSigma& copy) : | |
62 | AliRsnCut(copy), | |
63 | fSpecies(copy.fSpecies), | |
64 | fDetector(copy.fDetector), | |
64129b35 | 65 | fRejectUnmatched(copy.fRejectUnmatched), |
c865cb1d | 66 | fMomMin(copy.fMomMin), |
67 | fMomMax(copy.fMomMax), | |
64129b35 | 68 | fNSigma(copy.fNSigma) |
c865cb1d | 69 | { |
70 | // | |
71 | // Copy constructor. | |
72 | // | |
73 | } | |
74 | ||
75 | //_________________________________________________________________________________________________ | |
76 | AliRsnCutPIDNSigma& AliRsnCutPIDNSigma::operator=(const AliRsnCutPIDNSigma& copy) | |
77 | { | |
78 | // | |
79 | // Assignment operator | |
80 | // | |
81 | ||
82 | AliRsnCut::operator=(copy); | |
83 | ||
84 | fSpecies = copy.fSpecies; | |
85 | fDetector = copy.fDetector; | |
64129b35 | 86 | fRejectUnmatched = copy.fRejectUnmatched; |
c865cb1d | 87 | fMomMin = copy.fMomMin; |
88 | fMomMax = copy.fMomMax; | |
64129b35 | 89 | fNSigma = copy.fNSigma; |
c865cb1d | 90 | |
91 | return (*this); | |
92 | } | |
93 | ||
94 | //_________________________________________________________________________________________________ | |
95 | Bool_t AliRsnCutPIDNSigma::IsSelected(TObject *object) | |
96 | { | |
97 | // | |
98 | // Cut checker. | |
99 | // | |
100 | ||
101 | // coherence check | |
102 | if (!TargetOK(object)) return kFALSE; | |
103 | ||
104 | // check initialization of PID object | |
105 | AliPIDResponse *pid = fEvent->GetPIDResponse(); | |
106 | if (!pid) { | |
107 | AliFatal("NULL PID response"); | |
108 | return kFALSE; | |
109 | } | |
110 | ||
111 | // get reference momentum, for range cut | |
112 | Double_t momentum = -1.0; | |
64129b35 | 113 | AliVTrack *vtrack = fDaughter->Ref2Vtrack(); |
114 | if (!vtrack) { | |
c865cb1d | 115 | AliDebugClass(2, "Referenced daughter is not a track"); |
116 | return kFALSE; | |
117 | } | |
118 | if (fDetector == kTPC) | |
64129b35 | 119 | momentum = vtrack->GetTPCmomentum(); |
c865cb1d | 120 | else |
64129b35 | 121 | momentum = vtrack->P(); |
c865cb1d | 122 | |
64129b35 | 123 | // check momentum range |
f34f960b | 124 | if (momentum < fMomMin || momentum > fMomMax) { |
125 | AliDebugClass(2, Form("Track momentum = %.5f, outside allowed range [%.2f - %.2f]", momentum, fMomMin, fMomMax)); | |
126 | return kFALSE; | |
c865cb1d | 127 | } |
128 | ||
c865cb1d | 129 | // check PID |
64129b35 | 130 | Bool_t matched; |
131 | Double_t nsigma; | |
c865cb1d | 132 | switch (fDetector) { |
133 | case kITS: | |
64129b35 | 134 | matched = IsITS(vtrack); |
135 | nsigma = pid->NumberOfSigmasITS(vtrack, fSpecies); | |
c865cb1d | 136 | break; |
137 | case kTPC: | |
64129b35 | 138 | matched = IsTPC(vtrack); |
139 | nsigma = pid->NumberOfSigmasTPC(vtrack, fSpecies); | |
c865cb1d | 140 | break; |
141 | case kTOF: | |
64129b35 | 142 | matched = IsTOF(vtrack); |
143 | nsigma = pid->NumberOfSigmasTOF(vtrack, fSpecies); | |
c865cb1d | 144 | break; |
145 | default: | |
64129b35 | 146 | AliError("Bad detector chosen. Rejecting track"); |
c865cb1d | 147 | return kFALSE; |
148 | } | |
149 | ||
64129b35 | 150 | // determine cut result |
151 | if (fRejectUnmatched && (matched == kFALSE)) { | |
152 | AliDebugClass(2, "Required to reject unmatched traks, and this track is not matched in the detector"); | |
153 | return kFALSE; | |
154 | } else { | |
155 | AliDebugClass(2, Form("Nsigma = %.5f, maximum allowed = %.2f", nsigma, fNSigma)); | |
156 | if (TMath::Abs(nsigma) <= fNSigma) { | |
157 | AliDebugClass(2, "Track accepted"); | |
158 | return kTRUE; | |
159 | } else { | |
160 | AliDebugClass(2, "Track rejected"); | |
161 | return kFALSE; | |
162 | } | |
163 | } | |
c865cb1d | 164 | } |
165 | ||
166 | //_________________________________________________________________________________________________ | |
167 | void AliRsnCutPIDNSigma::Print(const Option_t *) const | |
168 | { | |
169 | // | |
170 | // Print information on this cut | |
171 | // | |
172 | ||
4f926d1d | 173 | Char_t mom[200], det[100], match[200]; |
c865cb1d | 174 | |
175 | if (fRejectUnmatched) | |
e187bd70 | 176 | snprintf(match, 200, "Unmatched tracks are rejected"); |
c865cb1d | 177 | else |
e187bd70 | 178 | snprintf(match, 200, "No check on track matching"); |
c865cb1d | 179 | |
180 | switch (fDetector) { | |
4f926d1d | 181 | case kITS: snprintf(det, 3, "ITS"); break; |
182 | case kTPC: snprintf(det, 3, "TPC"); break; | |
183 | case kTOF: snprintf(det, 3, "TOF"); break; | |
184 | default : snprintf(det, 3, "undefined"); | |
c865cb1d | 185 | } |
186 | ||
187 | AliInfo(Form("Cut name : %s", GetName())); | |
188 | AliInfo(Form("--> PID detector : %s", det)); | |
189 | AliInfo(Form("--> match criteria: %s", match)); | |
190 | AliInfo(Form("--> momentum range: %s", mom)); | |
191 | } |