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2895972e | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | //////////////////////////////////////////////////////////////////////////////// | |
17 | // | |
18 | // This class contains all code which is used to compute any of the values | |
19 | // which can be of interest within a resonance analysis. Besides the obvious | |
20 | // invariant mass, it allows to compute other utility values on all possible | |
21 | // targets, in order to allow a wide spectrum of binning and checks. | |
22 | // When needed, this object can also define a binning in the variable which | |
23 | // it is required to compute, which is used for initializing axes of output | |
24 | // histograms (see AliRsnFunction). | |
25 | // The value computation requires this object to be passed the object whose | |
26 | // informations will be used. This object can be of any allowed input type | |
27 | // (track, Daughter, event), then this class must inherit from AliRsnTarget. | |
28 | // Then, when value computation is attempted, a check on target type is done | |
29 | // and computation is successful only if expected target matches that of the | |
30 | // passed object. | |
31 | // In some cases, the value computation can require a support external object, | |
32 | // which must then be passed to this class. It can be of any type inheriting | |
33 | // from TObject. | |
34 | // | |
35 | // authors: A. Pulvirenti (alberto.pulvirenti@ct.infn.it) | |
36 | // M. Vala (martin.vala@cern.ch) | |
37 | // | |
38 | //////////////////////////////////////////////////////////////////////////////// | |
39 | ||
b63357a0 | 40 | #include <Riostream.h> |
2895972e | 41 | #include "AliVVertex.h" |
42 | #include "AliMultiplicity.h" | |
43 | #include "AliESDtrackCuts.h" | |
44 | #include "AliESDpid.h" | |
45 | #include "AliAODPid.h" | |
46 | #include "AliCentrality.h" | |
47 | #include "AliESDUtils.h" | |
b63357a0 | 48 | #include "AliPIDResponse.h" |
2895972e | 49 | |
50 | #include "AliRsnEvent.h" | |
51 | #include "AliRsnDaughter.h" | |
52 | #include "AliRsnMother.h" | |
53 | #include "AliRsnDaughterDef.h" | |
54 | #include "AliRsnDaughterDef.h" | |
55 | ||
56 | #include "AliRsnValueDaughter.h" | |
57 | ||
58 | ClassImp(AliRsnValueDaughter) | |
59 | ||
60 | //_____________________________________________________________________________ | |
61 | AliRsnValueDaughter::AliRsnValueDaughter(const char *name, EType type) : | |
62 | AliRsnValue(name, AliRsnTarget::kDaughter), | |
63 | fType(type) | |
64 | { | |
65 | // | |
66 | // Constructor | |
67 | // | |
68 | } | |
69 | ||
70 | //_____________________________________________________________________________ | |
61f275d1 | 71 | AliRsnValueDaughter::AliRsnValueDaughter(const AliRsnValueDaughter ©) : |
2895972e | 72 | AliRsnValue(copy), |
73 | fType(copy.fType) | |
74 | { | |
75 | // | |
76 | // Copy constructor | |
77 | // | |
78 | } | |
79 | ||
80 | //_____________________________________________________________________________ | |
61f275d1 | 81 | AliRsnValueDaughter &AliRsnValueDaughter::operator=(const AliRsnValueDaughter ©) |
2895972e | 82 | { |
83 | // | |
84 | // Assignment operator. | |
85 | // Works like copy constructor. | |
86 | // | |
87 | ||
88 | AliRsnValue::operator=(copy); | |
e6f3a909 | 89 | if (this == ©) |
61f275d1 | 90 | return *this; |
2895972e | 91 | fType = copy.fType; |
61f275d1 | 92 | |
2895972e | 93 | return (*this); |
94 | } | |
95 | ||
96 | //_____________________________________________________________________________ | |
61f275d1 | 97 | const char *AliRsnValueDaughter::GetTypeName() const |
2895972e | 98 | { |
99 | // | |
100 | // This method returns a string to give a name to each possible | |
101 | // computation value. | |
102 | // | |
103 | ||
104 | switch (fType) { | |
b63357a0 | 105 | case kP: return "SingleTrackPtot"; |
106 | case kPt: return "SingleTrackPt"; | |
107 | case kPtpc: return "SingleTrackPtpc"; | |
108 | case kEta: return "SingleTrackEta"; | |
109 | case kITSsignal: return "SingleTrackITSsignal"; | |
110 | case kTPCsignal: return "SingleTrackTPCsignal"; | |
111 | case kTOFsignal: return "SingleTrackTOFsignal"; | |
52e6652d | 112 | case kTPCnsigmaPi: return "SingleTrackTPCnsigmaPion"; |
113 | case kTPCnsigmaK: return "SingleTrackTPCnsigmaKaon"; | |
114 | case kTPCnsigmaP: return "SingleTrackTPCnsigmaProton"; | |
b63357a0 | 115 | case kTOFnsigmaPi: return "SingleTrackTOFnsigmaPion"; |
116 | case kTOFnsigmaK: return "SingleTrackTOFnsigmaKaon"; | |
117 | case kTOFnsigmaP: return "SingleTrackTOFnsigmaProton"; | |
118 | default: return "Undefined"; | |
2895972e | 119 | } |
120 | } | |
121 | ||
122 | //_____________________________________________________________________________ | |
123 | Bool_t AliRsnValueDaughter::Eval(TObject *object) | |
124 | { | |
125 | // | |
126 | // Evaluation of the required value. | |
127 | // Checks that the passed object is of the right type | |
128 | // and if this check is successful, computes the required value. | |
129 | // The output of the function tells if computing was successful, | |
130 | // and the values must be taken with GetValue(). | |
131 | // | |
61f275d1 | 132 | |
133 | // coherence check, which also casts object | |
2895972e | 134 | // to AliRsnTarget data members and returns kFALSE |
135 | // in case the object is NULL | |
136 | if (!TargetOK(object)) return kFALSE; | |
137 | ||
138 | // set a reference to the mother momentum | |
b63357a0 | 139 | AliVParticle *ref = fDaughter->GetRef(); |
140 | AliVParticle *refMC = fDaughter->GetRefMC(); | |
2895972e | 141 | AliVTrack *track = fDaughter->Ref2Vtrack(); |
b63357a0 | 142 | if (fUseMCInfo && !refMC) { |
143 | AliError("No MC"); | |
144 | return kFALSE; | |
145 | } | |
146 | if (!fUseMCInfo && !ref) { | |
147 | AliError("No DATA"); | |
148 | return kFALSE; | |
149 | } | |
61f275d1 | 150 | |
2895972e | 151 | // compute value depending on types in the enumeration |
152 | // if the type does not match any available choice, or if | |
153 | // the computation is not doable due to any problem | |
154 | // (not initialized support object, wrong values, risk of floating point errors) | |
155 | // the method returng kFALSE and sets the computed value to a meaningless number | |
156 | switch (fType) { | |
157 | case kP: | |
b63357a0 | 158 | fComputedValue = (fUseMCInfo ? refMC->P() : ref->P()); |
2895972e | 159 | return kTRUE; |
160 | case kPt: | |
b63357a0 | 161 | fComputedValue = (fUseMCInfo ? refMC->Pt() : ref->Pt()); |
2895972e | 162 | return kTRUE; |
163 | case kEta: | |
b63357a0 | 164 | fComputedValue = (fUseMCInfo ? refMC->Eta() : ref->Eta()); |
2895972e | 165 | return kTRUE; |
166 | case kPtpc: | |
167 | if (track) { | |
168 | fComputedValue = track->GetTPCmomentum(); | |
169 | return kTRUE; | |
170 | } else { | |
171 | AliWarning("Cannot get TPC momentum for non-track object"); | |
172 | fComputedValue = 0.0; | |
173 | return kFALSE; | |
174 | } | |
175 | case kITSsignal: | |
176 | if (track) { | |
177 | fComputedValue = track->GetITSsignal(); | |
178 | return kTRUE; | |
179 | } else { | |
180 | AliWarning("Cannot get ITS signal for non-track object"); | |
181 | fComputedValue = 0.0; | |
182 | return kFALSE; | |
183 | } | |
184 | case kTPCsignal: | |
185 | if (track) { | |
186 | fComputedValue = track->GetTPCsignal(); | |
187 | return kTRUE; | |
188 | } else { | |
189 | AliWarning("Cannot get TPC signal for non-track object"); | |
190 | fComputedValue = 0.0; | |
191 | return kFALSE; | |
192 | } | |
193 | case kTOFsignal: | |
194 | if (track) { | |
195 | fComputedValue = track->GetTOFsignal(); | |
196 | return kTRUE; | |
197 | } else { | |
198 | AliWarning("Cannot get TOF signal for non-track object"); | |
199 | fComputedValue = 0.0; | |
200 | return kFALSE; | |
201 | } | |
52e6652d | 202 | case kTPCnsigmaPi: |
203 | if (track) { | |
204 | AliPIDResponse *pid = fEvent->GetPIDResponse(); | |
205 | fComputedValue = pid->NumberOfSigmasTPC(track, AliPID::kPion); | |
206 | return kTRUE; | |
207 | } else { | |
208 | AliWarning("Cannot get TOF signal for non-track object"); | |
209 | fComputedValue = 0.0; | |
210 | return kFALSE; | |
211 | } | |
212 | case kTPCnsigmaK: | |
213 | if (track) { | |
214 | AliPIDResponse *pid = fEvent->GetPIDResponse(); | |
215 | fComputedValue = pid->NumberOfSigmasTPC(track, AliPID::kKaon); | |
216 | return kTRUE; | |
217 | } else { | |
218 | AliWarning("Cannot get TOF signal for non-track object"); | |
219 | fComputedValue = 0.0; | |
220 | return kFALSE; | |
221 | } | |
222 | case kTPCnsigmaP: | |
223 | if (track) { | |
224 | AliPIDResponse *pid = fEvent->GetPIDResponse(); | |
225 | fComputedValue = pid->NumberOfSigmasTPC(track, AliPID::kProton); | |
226 | return kTRUE; | |
227 | } else { | |
228 | AliWarning("Cannot get TOF signal for non-track object"); | |
229 | fComputedValue = 0.0; | |
230 | return kFALSE; | |
231 | } | |
b63357a0 | 232 | case kTOFnsigmaPi: |
233 | if (track) { | |
234 | AliPIDResponse *pid = fEvent->GetPIDResponse(); | |
235 | fComputedValue = pid->NumberOfSigmasTOF(track, AliPID::kPion); | |
236 | return kTRUE; | |
237 | } else { | |
238 | AliWarning("Cannot get TOF signal for non-track object"); | |
239 | fComputedValue = 0.0; | |
240 | return kFALSE; | |
241 | } | |
242 | case kTOFnsigmaK: | |
243 | if (track) { | |
244 | AliPIDResponse *pid = fEvent->GetPIDResponse(); | |
245 | fComputedValue = pid->NumberOfSigmasTOF(track, AliPID::kKaon); | |
246 | return kTRUE; | |
247 | } else { | |
248 | AliWarning("Cannot get TOF signal for non-track object"); | |
249 | fComputedValue = 0.0; | |
250 | return kFALSE; | |
251 | } | |
252 | case kTOFnsigmaP: | |
253 | if (track) { | |
254 | AliPIDResponse *pid = fEvent->GetPIDResponse(); | |
255 | fComputedValue = pid->NumberOfSigmasTOF(track, AliPID::kProton); | |
256 | return kTRUE; | |
257 | } else { | |
258 | AliWarning("Cannot get TOF signal for non-track object"); | |
259 | fComputedValue = 0.0; | |
260 | return kFALSE; | |
261 | } | |
2895972e | 262 | default: |
263 | AliError(Form("[%s] Invalid value type for this computation", GetName())); | |
264 | return kFALSE; | |
265 | } | |
266 | } |