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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" | |
b6ab153d | 20 | #include "AliESDpid.h" |
21 | #include "AliAODpidUtil.h" | |
c865cb1d | 22 | |
23 | #include "AliRsnCutPIDNSigma.h" | |
24 | ||
b6ab153d | 25 | ClassImp(AliRsnCutPIDNSigma::AliRsnPIDRange) |
c31027eb | 26 | ClassImp(AliRsnCutPIDNSigma) |
c865cb1d | 27 | |
64129b35 | 28 | //_________________________________________________________________________________________________ |
29 | AliRsnCutPIDNSigma::AliRsnCutPIDNSigma() : | |
30 | AliRsnCut("cut", AliRsnTarget::kDaughter), | |
31 | fSpecies(AliPID::kUnknown), | |
32 | fDetector(kDetectors), | |
33 | fRejectUnmatched(kFALSE), | |
b6ab153d | 34 | fTrackNSigma(0.0), |
35 | fTrackMom(0.0), | |
36 | fMyPID(0x0), | |
37 | fRanges("AliRsnCutPIDNSigma::AliRsnPIDRange", 0) | |
64129b35 | 38 | { |
39 | // | |
40 | // Main constructor. | |
41 | // | |
42 | } | |
43 | ||
c865cb1d | 44 | //_________________________________________________________________________________________________ |
45 | AliRsnCutPIDNSigma::AliRsnCutPIDNSigma | |
b6ab153d | 46 | (const char *name, AliPID::EParticleType species, EDetector det) : |
64129b35 | 47 | AliRsnCut(name, AliRsnTarget::kDaughter), |
c865cb1d | 48 | fSpecies(species), |
49 | fDetector(det), | |
64129b35 | 50 | fRejectUnmatched(kFALSE), |
b6ab153d | 51 | fTrackNSigma(0.0), |
52 | fTrackMom(0.0), | |
53 | fMyPID(0x0), | |
54 | fRanges("AliRsnCutPIDNSigma::AliRsnPIDRange", 0) | |
c865cb1d | 55 | { |
56 | // | |
57 | // Main constructor. | |
58 | // | |
59 | } | |
60 | ||
61 | //_________________________________________________________________________________________________ | |
62 | AliRsnCutPIDNSigma::AliRsnCutPIDNSigma | |
63 | (const AliRsnCutPIDNSigma& copy) : | |
64 | AliRsnCut(copy), | |
65 | fSpecies(copy.fSpecies), | |
66 | fDetector(copy.fDetector), | |
64129b35 | 67 | fRejectUnmatched(copy.fRejectUnmatched), |
b6ab153d | 68 | fTrackNSigma(0.0), |
69 | fTrackMom(0.0), | |
70 | fMyPID(copy.fMyPID), | |
71 | fRanges(copy.fRanges) | |
c865cb1d | 72 | { |
73 | // | |
74 | // Copy constructor. | |
75 | // | |
76 | } | |
77 | ||
78 | //_________________________________________________________________________________________________ | |
79 | AliRsnCutPIDNSigma& AliRsnCutPIDNSigma::operator=(const AliRsnCutPIDNSigma& copy) | |
80 | { | |
81 | // | |
82 | // Assignment operator | |
83 | // | |
84 | ||
85 | AliRsnCut::operator=(copy); | |
86 | ||
87 | fSpecies = copy.fSpecies; | |
88 | fDetector = copy.fDetector; | |
64129b35 | 89 | fRejectUnmatched = copy.fRejectUnmatched; |
b6ab153d | 90 | fMyPID = copy.fMyPID; |
91 | fRanges = copy.fRanges; | |
c865cb1d | 92 | |
93 | return (*this); | |
94 | } | |
95 | ||
b6ab153d | 96 | //__________________________________________________________________________________________________ |
97 | void AliRsnCutPIDNSigma::InitMyPID(Bool_t isMC, Bool_t isESD) | |
98 | { | |
99 | // | |
100 | // Initialize manual PID object | |
101 | // | |
102 | ||
103 | if (isESD) | |
104 | fMyPID = new AliESDpid(isMC); | |
105 | else | |
106 | fMyPID = new AliAODpidUtil(isMC); | |
107 | } | |
108 | ||
c865cb1d | 109 | //_________________________________________________________________________________________________ |
110 | Bool_t AliRsnCutPIDNSigma::IsSelected(TObject *object) | |
111 | { | |
112 | // | |
113 | // Cut checker. | |
b6ab153d | 114 | // As usual, there are 'kFALSE' exit points whenever one of the conditions is not passed, |
115 | // and at the end, it returns kTRUE since it bypassed all possible exit points. | |
c865cb1d | 116 | // |
117 | ||
118 | // coherence check | |
119 | if (!TargetOK(object)) return kFALSE; | |
120 | ||
121 | // check initialization of PID object | |
b6ab153d | 122 | // if manual PID is used, use that, otherwise get from source event |
123 | AliPIDResponse *pid = 0x0; | |
124 | if (fMyPID) | |
125 | pid = fMyPID; | |
126 | else | |
127 | pid = fEvent->GetPIDResponse(); | |
c865cb1d | 128 | if (!pid) { |
129 | AliFatal("NULL PID response"); | |
130 | return kFALSE; | |
131 | } | |
132 | ||
b6ab153d | 133 | // convert input object into AliVTrack |
134 | // if this fails, the cut cannot be checked | |
64129b35 | 135 | AliVTrack *vtrack = fDaughter->Ref2Vtrack(); |
136 | if (!vtrack) { | |
c865cb1d | 137 | AliDebugClass(2, "Referenced daughter is not a track"); |
138 | return kFALSE; | |
139 | } | |
b6ab153d | 140 | |
141 | // check matching, if required | |
142 | // a) if detector is not matched and matching is required, reject the track | |
143 | // b) if detector is not matched and matching is not required, accept blindly the track | |
144 | // since missing the matching causes one not to be able to rely that detector | |
145 | if (!MatchDetector(vtrack)) { | |
146 | AliDebugClass(2, Form("Detector not matched. fRejectUnmatched = %s --> track is %s", (fRejectUnmatched ? "true" : "false"), (fRejectUnmatched ? "rejected" : "accepted"))); | |
147 | return (!fRejectUnmatched); | |
c865cb1d | 148 | } |
149 | ||
b6ab153d | 150 | // get reference momentum |
151 | fTrackMom = (fDetector == kTPC) ? vtrack->GetTPCmomentum() : vtrack->P(); | |
152 | ||
153 | // get number of sigmas | |
c865cb1d | 154 | switch (fDetector) { |
155 | case kITS: | |
b6ab153d | 156 | fTrackNSigma = TMath::Abs(pid->NumberOfSigmasITS(vtrack, fSpecies)); |
c865cb1d | 157 | break; |
158 | case kTPC: | |
b6ab153d | 159 | fTrackNSigma = TMath::Abs(pid->NumberOfSigmasTPC(vtrack, fSpecies)); |
c865cb1d | 160 | break; |
161 | case kTOF: | |
b6ab153d | 162 | fTrackNSigma = TMath::Abs(pid->NumberOfSigmasTOF(vtrack, fSpecies)); |
c865cb1d | 163 | break; |
164 | default: | |
64129b35 | 165 | AliError("Bad detector chosen. Rejecting track"); |
c865cb1d | 166 | return kFALSE; |
167 | } | |
168 | ||
b6ab153d | 169 | // loop on all ranges, and use the one which contains this momentum |
170 | // if none is found, the cut is not passed | |
171 | Bool_t accept = kFALSE; | |
172 | Int_t i, goodRange = -1, nRanges = fRanges.GetEntriesFast(); | |
173 | for (i = 0; i < nRanges; i++) { | |
174 | AliRsnPIDRange *range = (AliRsnPIDRange*)fRanges[i]; | |
175 | if (!range) continue; | |
176 | if (!range->IsInRange(fTrackMom)) continue; | |
177 | else { | |
178 | goodRange = i; | |
179 | accept = range->CutPass(fTrackNSigma); | |
180 | AliDebugClass(2, Form("[%s] NSigma = %.3f, max = %.3f, track %s", GetName(), fTrackNSigma, range->NSigmaCut(), (accept ? "accepted" : "rejected"))); | |
181 | break; | |
182 | } | |
183 | } | |
184 | if (goodRange < 0) { | |
185 | AliDebugClass(2, Form("[%s] No good range found. Rejecting track", GetName())); | |
64129b35 | 186 | return kFALSE; |
187 | } else { | |
b6ab153d | 188 | AliDebugClass(2, Form("[%s] Mom = %.3f, good range found (#%d), track was %s", GetName(), fTrackMom, goodRange, (accept ? "accepted" : "rejected"))); |
189 | return accept; | |
64129b35 | 190 | } |
c865cb1d | 191 | } |
192 | ||
193 | //_________________________________________________________________________________________________ | |
194 | void AliRsnCutPIDNSigma::Print(const Option_t *) const | |
195 | { | |
196 | // | |
197 | // Print information on this cut | |
198 | // | |
199 | ||
4f926d1d | 200 | Char_t mom[200], det[100], match[200]; |
c865cb1d | 201 | |
202 | if (fRejectUnmatched) | |
e187bd70 | 203 | snprintf(match, 200, "Unmatched tracks are rejected"); |
c865cb1d | 204 | else |
e187bd70 | 205 | snprintf(match, 200, "No check on track matching"); |
c865cb1d | 206 | |
207 | switch (fDetector) { | |
4f926d1d | 208 | case kITS: snprintf(det, 3, "ITS"); break; |
209 | case kTPC: snprintf(det, 3, "TPC"); break; | |
210 | case kTOF: snprintf(det, 3, "TOF"); break; | |
211 | default : snprintf(det, 3, "undefined"); | |
c865cb1d | 212 | } |
213 | ||
214 | AliInfo(Form("Cut name : %s", GetName())); | |
215 | AliInfo(Form("--> PID detector : %s", det)); | |
216 | AliInfo(Form("--> match criteria: %s", match)); | |
217 | AliInfo(Form("--> momentum range: %s", mom)); | |
218 | } |