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d8d3b5b8 | 1 | #if !defined(__CINT__) || defined(__MAKECINT__) |
61adb9bd | 2 | // ROOT includes |
3 | #include "TBranch.h" | |
4 | #include "TClonesArray.h" | |
5 | #include "TLorentzVector.h" | |
6 | #include "TFile.h" | |
7 | #include "TH1.h" | |
8 | #include "TParticle.h" | |
9 | #include "TTree.h" | |
10 | ||
11 | // STEER includes | |
12 | #include "AliRun.h" | |
13 | #include "AliRunLoader.h" | |
14 | #include "AliHeader.h" | |
15 | #include "AliLoader.h" | |
16 | #include "AliStack.h" | |
17 | ||
18 | // MUON includes | |
19 | #include "AliMUON.h" | |
20 | #include "AliMUONData.h" | |
21 | #include "AliMUONHit.h" | |
22 | #include "AliMUONConstants.h" | |
23 | #include "AliMUONDigit.h" | |
24 | #include "AliMUONRawCluster.h" | |
25 | #include "AliMUONGlobalTrigger.h" | |
26 | #include "AliMUONLocalTrigger.h" | |
27 | #include "AliMUONTrack.h" | |
28 | #include "AliMUONTrackParam.h" | |
29 | #include "AliESDMuonTrack.h" | |
d8d3b5b8 | 30 | #endif |
61adb9bd | 31 | // |
32 | // Macro MUONmassPlot.C for new I/O | |
33 | // Ch. Finck, Subatech, Jan. 2004 | |
34 | // | |
35 | ||
36 | // macro to make invariant mass plots | |
37 | // for combinations of 2 muons with opposite charges, | |
38 | // from root file "MUON.tracks.root" containing the result of track reconstruction. | |
39 | // Histograms are stored on the "MUONmassPlot.root" file. | |
40 | // introducing TLorentzVector for parameter calculations (Pt, P,rap,etc...) | |
41 | // using Invariant Mass for rapidity. | |
42 | ||
43 | // Arguments: | |
44 | // FirstEvent (default 0) | |
45 | // LastEvent (default 0) | |
46 | // ResType (default 553) | |
47 | // 553 for Upsilon, anything else for J/Psi | |
48 | // Chi2Cut (default 100) | |
49 | // to keep only tracks with chi2 per d.o.f. < Chi2Cut | |
50 | // PtCutMin (default 1) | |
51 | // to keep only tracks with transverse momentum > PtCutMin | |
52 | // PtCutMax (default 10000) | |
53 | // to keep only tracks with transverse momentum < PtCutMax | |
54 | // massMin (default 9.17 for Upsilon) | |
55 | // & massMax (default 9.77 for Upsilon) | |
56 | // to calculate the reconstruction efficiency for resonances with invariant mass | |
57 | // massMin < mass < massMax. | |
58 | ||
59 | // Add parameters and histograms for analysis | |
60 | ||
61 | void MUONmassPlot(char* filename="galice.root", Int_t FirstEvent = 0, Int_t LastEvent = 0, Int_t ResType = 553, | |
62 | Float_t Chi2Cut = 100., Float_t PtCutMin = 1., Float_t PtCutMax = 10000., | |
63 | Float_t massMin = 9.17,Float_t massMax = 9.77) | |
64 | { | |
65 | cout << "MUONmassPlot " << endl; | |
66 | cout << "FirstEvent " << FirstEvent << endl; | |
67 | cout << "LastEvent " << LastEvent << endl; | |
68 | cout << "ResType " << ResType << endl; | |
69 | cout << "Chi2Cut " << Chi2Cut << endl; | |
70 | cout << "PtCutMin " << PtCutMin << endl; | |
71 | cout << "PtCutMax " << PtCutMax << endl; | |
72 | cout << "massMin " << massMin << endl; | |
73 | cout << "massMax " << massMax << endl; | |
74 | ||
75 | ||
76 | //Reset ROOT and connect tree file | |
77 | gROOT->Reset(); | |
78 | ||
79 | ||
80 | // File for histograms and histogram booking | |
81 | TFile *histoFile = new TFile("MUONmassPlot.root", "RECREATE"); | |
82 | TH1F *hPtMuon = new TH1F("hPtMuon", "Muon Pt (GeV/c)", 100, 0., 20.); | |
83 | TH1F *hPMuon = new TH1F("hPMuon", "Muon P (GeV/c)", 100, 0., 200.); | |
84 | TH1F *hChi2PerDof = new TH1F("hChi2PerDof", "Muon track chi2/d.o.f.", 100, 0., 20.); | |
85 | TH1F *hInvMassAll = new TH1F("hInvMassAll", "Mu+Mu- invariant mass (GeV/c2)", 480, 0., 12.); | |
86 | TH1F *hInvMassRes; | |
87 | ||
88 | if (ResType == 553) { | |
89 | hInvMassRes = new TH1F("hInvMassRes", "Mu+Mu- invariant mass (GeV/c2) around Upsilon", 60, 8., 11.); | |
90 | } else { | |
91 | hInvMassRes = new TH1F("hInvMassRes", "Mu+Mu- invariant mass (GeV/c2) around J/Psi", 80, 0., 5.); | |
92 | } | |
93 | ||
94 | TH1F *hNumberOfTrack = new TH1F("hNumberOfTrack","nb of track /evt ",20,-0.5,19.5); | |
95 | TH1F *hRapMuon = new TH1F("hRapMuon"," Muon Rapidity",50,-4.5,-2); | |
96 | TH1F *hRapResonance = new TH1F("hRapResonance"," Resonance Rapidity",50,-4.5,-2); | |
97 | TH1F *hPtResonance = new TH1F("hPtResonance", "Resonance Pt (GeV/c)", 100, 0., 20.); | |
98 | ||
99 | ||
100 | // settings | |
101 | Int_t EventInMass = 0; | |
102 | Float_t muonMass = 0.105658389; | |
103 | // Float_t UpsilonMass = 9.46037; | |
104 | // Float_t JPsiMass = 3.097; | |
105 | ||
106 | Double_t bendingSlope, nonBendingSlope, pYZ; | |
107 | Double_t fPxRec1, fPyRec1, fPzRec1, fZRec1, fE1; | |
108 | Double_t fPxRec2, fPyRec2, fPzRec2, fZRec2, fE2; | |
109 | Int_t fCharge, fCharge2; | |
110 | ||
111 | Int_t ntrackhits, nevents; | |
112 | Double_t fitfmin; | |
113 | ||
114 | TClonesArray * recTracksArray; | |
115 | TLorentzVector fV1, fV2, fVtot; | |
116 | ||
117 | // Creating Run Loader and openning file containing Hits | |
118 | AliRunLoader * RunLoader = AliRunLoader::Open(filename,"MUONFolder","READ"); | |
119 | if (RunLoader == 0x0) { | |
120 | printf(">>> Error : Error Opening %s file \n",filename); | |
121 | return; | |
122 | } | |
123 | ||
124 | AliLoader * MUONLoader = RunLoader->GetLoader("MUONLoader"); | |
125 | MUONLoader->LoadTracks("READ"); | |
126 | ||
127 | // Creating MUON data container | |
128 | AliMUONData muondata(MUONLoader,"MUON","MUON"); | |
129 | ||
130 | nevents = RunLoader->GetNumberOfEvents(); | |
131 | ||
132 | AliMUONTrack * rectrack; | |
133 | AliMUONTrackParam *trackParam; | |
134 | ||
135 | // Loop over events | |
136 | for (Int_t ievent = FirstEvent; ievent <= TMath::Min(LastEvent, nevents - 1); ievent++) { | |
137 | ||
138 | // get current event | |
139 | RunLoader->GetEvent(ievent); | |
140 | ||
141 | muondata.SetTreeAddress("RT"); | |
142 | muondata.GetRecTracks(); | |
143 | recTracksArray = muondata.RecTracks(); | |
144 | ||
145 | Int_t nrectracks = (Int_t) recTracksArray->GetEntriesFast(); // | |
146 | ||
147 | printf("\n Nb of events analysed: %d\r",ievent); | |
148 | // cout << " number of tracks: " << nrectracks <<endl; | |
149 | ||
150 | // loop over all reconstructed tracks (also first track of combination) | |
151 | for (Int_t irectracks = 0; irectracks < nrectracks; irectracks++) { | |
152 | ||
153 | rectrack = (AliMUONTrack*) recTracksArray->At(irectracks); | |
154 | ||
155 | trackParam = rectrack->GetTrackParamAtVertex(); | |
156 | bendingSlope = trackParam->GetBendingSlope(); | |
157 | nonBendingSlope = trackParam->GetNonBendingSlope(); | |
158 | ||
159 | pYZ = 1/TMath::Abs(trackParam->GetInverseBendingMomentum()); | |
160 | fPzRec1 = - pYZ / TMath::Sqrt(1.0 + bendingSlope * bendingSlope); // spectro. (z<0) | |
161 | fPxRec1 = fPzRec1 * nonBendingSlope; | |
162 | fPyRec1 = fPzRec1 * bendingSlope; | |
163 | fZRec1 = trackParam->GetZ(); | |
164 | fCharge = Int_t(TMath::Sign(1., trackParam->GetInverseBendingMomentum())); | |
165 | ||
166 | fE1 = TMath::Sqrt(muonMass * muonMass + fPxRec1 * fPxRec1 + fPyRec1 * fPyRec1 + fPzRec1 * fPzRec1); | |
167 | fV1.SetPxPyPzE(fPxRec1, fPyRec1, fPzRec1, fE1); | |
168 | ||
169 | ntrackhits = rectrack->GetNTrackHits(); | |
170 | fitfmin = rectrack->GetFitFMin(); | |
171 | ||
172 | // transverse momentum | |
173 | Float_t pt1 = fV1.Pt(); | |
174 | ||
175 | // total momentum | |
176 | Float_t p1 = fV1.P(); | |
177 | ||
178 | // Rapidity | |
179 | Float_t rapMuon1 = fV1.Rapidity(); | |
180 | ||
181 | // chi2 per d.o.f. | |
182 | Float_t ch1 = fitfmin / (2.0 * ntrackhits - 5); | |
183 | // printf(" px %f py %f pz %f NHits %d Norm.chi2 %f charge %d\n", | |
184 | // fPxRec1, fPyRec1, fPzRec1, ntrackhits, ch1, fCharge); | |
185 | ||
186 | // condition for good track (Chi2Cut and PtCut) | |
187 | ||
188 | if ((ch1 < Chi2Cut) && (pt1 > PtCutMin) && (pt1 < PtCutMax)) { | |
189 | ||
190 | // fill histos hPtMuon and hChi2PerDof | |
191 | hPtMuon->Fill(pt1); | |
192 | hPMuon->Fill(p1); | |
193 | hChi2PerDof->Fill(ch1); | |
194 | hRapMuon->Fill(rapMuon1); | |
195 | ||
196 | // loop over second track of combination | |
197 | for (Int_t irectracks2 = irectracks + 1; irectracks2 < nrectracks; irectracks2++) { | |
198 | ||
199 | rectrack = (AliMUONTrack*) recTracksArray->At(irectracks2); | |
200 | ||
201 | trackParam = rectrack->GetTrackParamAtVertex(); | |
202 | bendingSlope = trackParam->GetBendingSlope(); | |
203 | nonBendingSlope = trackParam->GetNonBendingSlope(); | |
204 | ||
205 | pYZ = 1/TMath::Abs(trackParam->GetInverseBendingMomentum()); | |
206 | fPzRec2 = - pYZ / TMath::Sqrt(1.0 + bendingSlope * bendingSlope); // spectro. (z<0) | |
207 | fPxRec2 = fPzRec2 * nonBendingSlope; | |
208 | fPyRec2 = fPzRec2 * bendingSlope; | |
209 | fZRec2 = trackParam->GetZ(); | |
210 | fCharge2 = Int_t(TMath::Sign(1., trackParam->GetInverseBendingMomentum())); | |
211 | ||
212 | fE2 = TMath::Sqrt(muonMass * muonMass + fPxRec2 * fPxRec2 + fPyRec2 * fPyRec2 + fPzRec2 * fPzRec2); | |
213 | fV2.SetPxPyPzE(fPxRec2, fPyRec2, fPzRec2, fE2); | |
214 | ||
215 | ntrackhits = rectrack->GetNTrackHits(); | |
216 | fitfmin = rectrack->GetFitFMin(); | |
217 | ||
218 | // transverse momentum | |
219 | Float_t pt2 = fV2.Pt(); | |
220 | ||
221 | // chi2 per d.o.f. | |
222 | Float_t ch2 = fitfmin / (2.0 * ntrackhits - 5); | |
223 | ||
224 | // condition for good track (Chi2Cut and PtCut) | |
225 | if ((ch2 < Chi2Cut) && (pt2 > PtCutMin) && (pt2 < PtCutMax)) { | |
226 | ||
227 | // condition for opposite charges | |
228 | if ((fCharge * fCharge2) == -1) { | |
229 | ||
230 | // invariant mass | |
231 | fVtot = fV1 + fV2; | |
232 | Float_t invMass = fVtot.M(); | |
233 | ||
234 | // fill histos hInvMassAll and hInvMassRes | |
235 | hInvMassAll->Fill(invMass); | |
236 | hInvMassRes->Fill(invMass); | |
237 | ||
238 | if (invMass > massMin && invMass < massMax) { | |
239 | EventInMass++; | |
240 | hRapResonance->Fill(fVtot.Rapidity()); | |
241 | hPtResonance->Fill(fVtot.Pt()); | |
242 | } | |
243 | ||
244 | } // if (fCharge * fCharge2) == -1) | |
245 | } // if ((ch2 < Chi2Cut) && (pt2 > PtCutMin) && (pt2 < PtCutMax)) | |
246 | } // for (Int_t irectracks2 = irectracks + 1; irectracks2 < irectracks; irectracks2++) | |
247 | } // if (ch1 < Chi2Cut) && (pt1 > PtCutMin)&& (pt1 < PtCutMax) ) | |
248 | } // for (Int_t irectracks = 0; irectracks < nrectracks; irectracks++) | |
249 | ||
250 | hNumberOfTrack->Fill(nrectracks); | |
251 | } // for (Int_t ievent = FirstEvent; | |
252 | ||
253 | histoFile->Write(); | |
254 | histoFile->Close(); | |
255 | ||
256 | cout << "MUONmassPlot " << endl; | |
257 | cout << "FirstEvent " << FirstEvent << endl; | |
258 | cout << "LastEvent " << LastEvent << endl; | |
259 | cout << "ResType " << ResType << endl; | |
260 | cout << "Chi2Cut " << Chi2Cut << endl; | |
261 | cout << "PtCutMin " << PtCutMin << endl; | |
262 | cout << "PtCutMax " << PtCutMax << endl; | |
263 | cout << "massMin " << massMin << endl; | |
264 | cout << "massMax " << massMax << endl; | |
265 | cout << "EventInMass " << EventInMass << endl; | |
266 | } | |
267 |