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bde49c8a | 1 | /************************************************************************* |
2 | * Copyright(c) 1998-2008, 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 | ||
8a993eac | 16 | // *************************************************** |
17 | // * MC particle level cuts for azimuthal isotropic * | |
18 | // * expansion in highly central collisions analysis * | |
19 | // * author: Cristian Andrei * | |
20 | // * acristian@niham.nipne.ro * | |
21 | // * ************************************************* | |
bde49c8a | 22 | |
23 | #include <TParticle.h> | |
24 | ||
25 | #include "AliMCEvent.h" | |
26 | #include "AliStack.h" | |
27 | #include "AliMCParticle.h" | |
28 | ||
29 | #include "AliAnalysisCentralCutMC.h" | |
bde49c8a | 30 | //____________________________________________________________________ |
31 | ClassImp(AliAnalysisCentralCutMC) | |
32 | ||
33 | //____________________________________________________________________ | |
34 | AliAnalysisCentralCutMC::AliAnalysisCentralCutMC(const Char_t* name, const Char_t* title) | |
35 | :AliAnalysisCuts(name,title) | |
36 | ,fOnlyPrim(0) | |
37 | ,fMCEvt(0) | |
38 | ,fPDGCode(0) | |
39 | ,fPtMin(0) | |
40 | ,fPtMax(0) | |
41 | ,fEtaMin(0) | |
42 | ,fEtaMax(0) | |
43 | { | |
44 | //constructor | |
45 | ||
46 | fOnlyPrim = kFALSE; //implicit consider si part secundare | |
47 | ||
48 | SetPDGCode(); | |
49 | SetPtRange(); | |
50 | SetEtaRange(); | |
51 | } | |
52 | ||
53 | //____________________________________________________________________ | |
54 | AliAnalysisCentralCutMC::~AliAnalysisCentralCutMC(){ | |
55 | // Destructor | |
56 | ||
57 | if(fMCEvt) delete fMCEvt; | |
58 | ||
59 | } | |
60 | ||
61 | //___________________________________________________________________________ | |
62 | Bool_t AliAnalysisCentralCutMC::IsSelected(TObject* const obj){ | |
63 | // Check if the particle passes the cuts | |
64 | ||
65 | AliMCParticle *part = dynamic_cast<AliMCParticle *>(obj); | |
66 | ||
67 | if(!part){ | |
68 | printf("AliAnalysisCentralCutMC:IsSelected ->Can't get particle!\n"); | |
69 | return kFALSE; | |
70 | } | |
71 | ||
72 | if(!fMCEvt){ | |
73 | printf("AliAnalysisCentralCutMC:IsSelected ->Can't get MCEvent!\n"); | |
74 | return kFALSE; | |
75 | } | |
76 | ||
77 | AliStack *stack = fMCEvt->Stack(); | |
78 | if(!stack){ | |
79 | printf("AliAnalysisCentralCutMC:IsSelected ->Can't get Stack!\n"); | |
80 | return kFALSE; | |
81 | } | |
82 | ||
83 | Double_t pt = part->Pt(); | |
84 | ||
85 | Double_t eta = part->Eta(); | |
86 | ||
87 | ||
88 | if(fOnlyPrim){ | |
89 | if(!IsPrimary(part, stack)) return kFALSE; | |
90 | } | |
91 | ||
92 | if(fPDGCode != 0){ | |
93 | if(!CheckPDG(part, fPDGCode)) return kFALSE; | |
94 | } | |
95 | ||
96 | if((pt < fPtMin) || (pt > fPtMax)) return kFALSE; | |
97 | ||
98 | if((eta < fEtaMin) || (eta > fEtaMax)) return kFALSE; | |
99 | ||
100 | ||
101 | return kTRUE; | |
102 | } | |
103 | ||
104 | //___________________________________________________________________________ | |
105 | Bool_t AliAnalysisCentralCutMC::IsPrimary(AliMCParticle* const part, AliStack* const stack){ | |
106 | // Check if the particle is primary | |
107 | ||
108 | Int_t index = part->GetLabel(); | |
109 | ||
110 | TParticle* p = stack->Particle(index); | |
111 | if(!p){ | |
112 | printf("AliAnalysisCentralCutMC:IsPrimary -> Can't get TParticle!\n"); | |
113 | return kFALSE; | |
114 | } | |
115 | ||
116 | Int_t ist = p->GetStatusCode(); | |
117 | ||
118 | if (ist > 1) return kFALSE; | |
119 | ||
120 | // Int_t pdg = TMath::Abs(p->GetPdgCode()); | |
121 | ||
122 | if (index < stack->GetNprimary()) { | |
123 | return kTRUE; | |
124 | } | |
125 | else return kFALSE; | |
126 | ||
127 | } | |
128 | ||
129 | ||
130 | void AliAnalysisCentralCutMC::ReceiveEvt(TObject* mcEvent) { | |
131 | // Receive the event send from the task | |
132 | // The event is needed in order to get the Stack | |
133 | ||
134 | if (!mcEvent){ | |
135 | printf("Pointer to MC Event is null! \n"); | |
136 | return; | |
137 | } | |
138 | ||
139 | fMCEvt = dynamic_cast<AliMCEvent*> (mcEvent); | |
140 | if(!fMCEvt){ | |
141 | printf("AliAnalysisCentralCutMC:ReceiveEvt -> Can't get fMCEvt!\n"); | |
142 | return; | |
143 | } | |
144 | ||
145 | } | |
146 | ||
147 | ||
148 | Bool_t AliAnalysisCentralCutMC::CheckPDG(AliMCParticle* const mcPart, Int_t const pdg) { | |
149 | // Checks if the particle is of the wanted type | |
150 | ||
151 | TParticle* part = mcPart->Particle(); | |
152 | ||
153 | if(!part){ | |
154 | printf("AliAnalysisCentralCutMC:IsPrimary -> Can't get TParticle!\n"); | |
155 | return kFALSE; | |
156 | } | |
157 | ||
158 | Int_t pdgCode = part->GetPdgCode(); | |
159 | ||
160 | if (pdgCode != pdg ) return kFALSE; | |
161 | ||
162 | return kTRUE; | |
163 | ||
164 | } |