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5473f16a | 1 | #if !defined(__CINT__) || defined(__MAKECINT__) |
2 | // ROOT includes | |
48d6b312 | 3 | #include "TTree.h" |
5473f16a | 4 | #include "TBranch.h" |
5 | #include "TClonesArray.h" | |
6 | #include "TLorentzVector.h" | |
7 | #include "TFile.h" | |
8 | #include "TH1.h" | |
ac3c5325 | 9 | #include "TH2.h" |
5473f16a | 10 | #include "TParticle.h" |
11 | #include "TTree.h" | |
12 | #include <Riostream.h> | |
13 | ||
14 | // STEER includes | |
15 | #include "AliRun.h" | |
0ff94351 | 16 | #include "AliLog.h" |
5473f16a | 17 | #include "AliRunLoader.h" |
18 | #include "AliHeader.h" | |
19 | #include "AliLoader.h" | |
20 | #include "AliStack.h" | |
0ff94351 | 21 | #include "AliMagFMaps.h" |
5473f16a | 22 | #include "AliESD.h" |
0ff94351 | 23 | #include "AliTracker.h" |
5473f16a | 24 | |
25 | // MUON includes | |
211c52eb | 26 | #include "AliMUONTrackParam.h" |
5473f16a | 27 | #include "AliESDMuonTrack.h" |
28 | #endif | |
29 | // | |
30 | // Macro MUONmassPlot.C for ESD | |
31 | // Ch. Finck, Subatech, April. 2004 | |
32 | // | |
33 | ||
34 | // macro to make invariant mass plots | |
35 | // for combinations of 2 muons with opposite charges, | |
36 | // from root file "MUON.tracks.root" containing the result of track reconstruction. | |
37 | // Histograms are stored on the "MUONmassPlot.root" file. | |
38 | // introducing TLorentzVector for parameter calculations (Pt, P,rap,etc...) | |
39 | // using Invariant Mass for rapidity. | |
40 | ||
41 | // Arguments: | |
42 | // FirstEvent (default 0) | |
43 | // LastEvent (default 0) | |
44 | // ResType (default 553) | |
45 | // 553 for Upsilon, anything else for J/Psi | |
46 | // Chi2Cut (default 100) | |
47 | // to keep only tracks with chi2 per d.o.f. < Chi2Cut | |
48 | // PtCutMin (default 1) | |
49 | // to keep only tracks with transverse momentum > PtCutMin | |
50 | // PtCutMax (default 10000) | |
51 | // to keep only tracks with transverse momentum < PtCutMax | |
52 | // massMin (default 9.17 for Upsilon) | |
53 | // & massMax (default 9.77 for Upsilon) | |
54 | // to calculate the reconstruction efficiency for resonances with invariant mass | |
55 | // massMin < mass < massMax. | |
56 | ||
57 | // Add parameters and histograms for analysis | |
58 | ||
59 | Bool_t MUONmassPlot(char* filename = "galice.root", Int_t FirstEvent = 0, Int_t LastEvent = 10000, | |
60 | char* esdFileName = "AliESDs.root", Int_t ResType = 553, | |
61 | Float_t Chi2Cut = 100., Float_t PtCutMin = 1., Float_t PtCutMax = 10000., | |
62 | Float_t massMin = 9.17,Float_t massMax = 9.77) | |
63 | { | |
64 | cout << "MUONmassPlot " << endl; | |
65 | cout << "FirstEvent " << FirstEvent << endl; | |
66 | cout << "LastEvent " << LastEvent << endl; | |
67 | cout << "ResType " << ResType << endl; | |
68 | cout << "Chi2Cut " << Chi2Cut << endl; | |
69 | cout << "PtCutMin " << PtCutMin << endl; | |
70 | cout << "PtCutMax " << PtCutMax << endl; | |
71 | cout << "massMin " << massMin << endl; | |
72 | cout << "massMax " << massMax << endl; | |
73 | ||
74 | ||
75 | //Reset ROOT and connect tree file | |
76 | gROOT->Reset(); | |
77 | ||
5473f16a | 78 | // File for histograms and histogram booking |
79 | TFile *histoFile = new TFile("MUONmassPlot.root", "RECREATE"); | |
80 | TH1F *hPtMuon = new TH1F("hPtMuon", "Muon Pt (GeV/c)", 100, 0., 20.); | |
ac3c5325 | 81 | TH1F *hPtMuonPlus = new TH1F("hPtMuonPlus", "Muon+ Pt (GeV/c)", 100, 0., 20.); |
82 | TH1F *hPtMuonMinus = new TH1F("hPtMuonMinus", "Muon- Pt (GeV/c)", 100, 0., 20.); | |
5473f16a | 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.); | |
ac3c5325 | 86 | TH1F *hInvMassBg = new TH1F("hInvMassBg", "Mu+Mu- invariant mass BG(GeV/c2)", 480, 0., 12.); |
f57d136a | 87 | TH2F *hInvMassAll_vs_Pt = new TH2F("hInvMassAll_vs_Pt","hInvMassAll_vs_Pt",480,0.,12.,80,0.,20.); |
88 | TH2F *hInvMassBgk_vs_Pt = new TH2F("hInvMassBgk_vs_Pt","hInvMassBgk_vs_Pt",480,0.,12.,80,0.,20.); | |
89 | TH1F *hInvMassRes; | |
6ab68e5f | 90 | TH1F *hPrimaryVertex = new TH1F("hPrimaryVertex","SPD reconstructed Z vertex",150,-15,15); |
5473f16a | 91 | |
92 | if (ResType == 553) { | |
93 | hInvMassRes = new TH1F("hInvMassRes", "Mu+Mu- invariant mass (GeV/c2) around Upsilon", 60, 8., 11.); | |
94 | } else { | |
95 | hInvMassRes = new TH1F("hInvMassRes", "Mu+Mu- invariant mass (GeV/c2) around J/Psi", 80, 0., 5.); | |
96 | } | |
97 | ||
98 | TH1F *hNumberOfTrack = new TH1F("hNumberOfTrack","nb of track /evt ",20,-0.5,19.5); | |
99 | TH1F *hRapMuon = new TH1F("hRapMuon"," Muon Rapidity",50,-4.5,-2); | |
100 | TH1F *hRapResonance = new TH1F("hRapResonance"," Resonance Rapidity",50,-4.5,-2); | |
101 | TH1F *hPtResonance = new TH1F("hPtResonance", "Resonance Pt (GeV/c)", 100, 0., 20.); | |
ac3c5325 | 102 | TH2F *hThetaPhiPlus = new TH2F("hThetaPhiPlus", "Theta vs Phi +", 760, -190., 190., 400, 160., 180.); |
103 | TH2F *hThetaPhiMinus = new TH2F("hThetaPhiMinus", "Theta vs Phi -", 760, -190., 190., 400, 160., 180.); | |
5473f16a | 104 | |
105 | ||
106 | // settings | |
107 | Int_t EventInMass = 0; | |
6678cd54 | 108 | Int_t EventInMassMatch = 0; |
109 | Int_t NbTrigger = 0; | |
110 | ||
5473f16a | 111 | Float_t muonMass = 0.105658389; |
112 | // Float_t UpsilonMass = 9.46037; | |
113 | // Float_t JPsiMass = 3.097; | |
114 | ||
115 | Double_t thetaX, thetaY, pYZ; | |
116 | Double_t fPxRec1, fPyRec1, fPzRec1, fE1; | |
117 | Double_t fPxRec2, fPyRec2, fPzRec2, fE2; | |
118 | Int_t fCharge, fCharge2; | |
119 | ||
120 | Int_t ntrackhits, nevents; | |
121 | Double_t fitfmin; | |
e3c6ae4c | 122 | Double_t fZVertex=0; |
211c52eb | 123 | Double_t fYVertex=0; |
124 | Double_t fXVertex=0; | |
5473f16a | 125 | |
126 | TLorentzVector fV1, fV2, fVtot; | |
cb75342e | 127 | |
0ff94351 | 128 | // set mag field |
129 | // waiting for mag field in CDB | |
130 | printf("Loading field map...\n"); | |
131 | AliMagFMaps* field = new AliMagFMaps("Maps","Maps", 1, 1., 10., AliMagFMaps::k4kG); | |
132 | AliTracker::SetFieldMap(field, kFALSE); | |
cb75342e | 133 | |
5473f16a | 134 | // open run loader and load gAlice, kinematics and header |
135 | AliRunLoader* runLoader = AliRunLoader::Open(filename); | |
136 | if (!runLoader) { | |
137 | Error("MUONmass_ESD", "getting run loader from file %s failed", | |
138 | filename); | |
139 | return kFALSE; | |
140 | } | |
141 | ||
5473f16a | 142 | if (!gAlice) { |
143 | Error("MUONmass_ESD", "no galice object found"); | |
144 | return kFALSE; | |
145 | } | |
146 | ||
147 | ||
148 | // open the ESD file | |
149 | TFile* esdFile = TFile::Open(esdFileName); | |
150 | if (!esdFile || !esdFile->IsOpen()) { | |
151 | Error("MUONmass_ESD", "opening ESD file %s failed", esdFileName); | |
152 | return kFALSE; | |
153 | } | |
154 | ||
48d6b312 | 155 | AliESD* esd = new AliESD(); |
156 | TTree* tree = (TTree*) esdFile->Get("esdTree"); | |
157 | if (!tree) { | |
158 | Error("CheckESD", "no ESD tree found"); | |
159 | return kFALSE; | |
160 | } | |
161 | tree->SetBranchAddress("ESD", &esd); | |
f9ebb3bd | 162 | |
163 | ||
48d6b312 | 164 | |
5473f16a | 165 | runLoader->LoadHeader(); |
166 | nevents = runLoader->GetNumberOfEvents(); | |
211c52eb | 167 | |
168 | AliMUONTrackParam trackParam; | |
0ff94351 | 169 | |
5473f16a | 170 | // Loop over events |
171 | for (Int_t iEvent = FirstEvent; iEvent <= TMath::Min(LastEvent, nevents - 1); iEvent++) { | |
172 | ||
173 | // get current event | |
174 | runLoader->GetEvent(iEvent); | |
48d6b312 | 175 | |
5473f16a | 176 | // get the event summary data |
48d6b312 | 177 | tree->GetEvent(iEvent); |
5473f16a | 178 | if (!esd) { |
48d6b312 | 179 | Error("CheckESD", "no ESD object found for event %d", iEvent); |
5473f16a | 180 | return kFALSE; |
181 | } | |
182 | ||
f9ebb3bd | 183 | // get the SPD reconstructed vertex (vertexer) and fill the histogram |
6ab68e5f | 184 | AliESDVertex* Vertex = (AliESDVertex*) esd->AliESD::GetVertex(); |
211c52eb | 185 | |
186 | if (Vertex) { | |
187 | fZVertex = Vertex->GetZv(); | |
188 | fYVertex = Vertex->GetYv(); | |
189 | fXVertex = Vertex->GetXv(); | |
190 | ||
191 | } | |
f9ebb3bd | 192 | hPrimaryVertex->Fill(fZVertex); |
193 | ||
48d6b312 | 194 | Int_t nTracks = (Int_t)esd->GetNumberOfMuonTracks() ; |
5473f16a | 195 | |
196 | // printf("\n Nb of events analysed: %d\r",iEvent); | |
48d6b312 | 197 | // cout << " number of tracks: " << nTracks <<endl; |
5473f16a | 198 | |
199 | // loop over all reconstructed tracks (also first track of combination) | |
200 | for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) { | |
201 | ||
202 | AliESDMuonTrack* muonTrack = esd->GetMuonTrack(iTrack); | |
203 | ||
211c52eb | 204 | if (!Vertex) { |
205 | //re-extrapolate to vertex, if not kown before. | |
206 | trackParam.GetParamFrom(*muonTrack); | |
207 | trackParam.ExtrapToVertex(fXVertex, fYVertex, fZVertex); | |
208 | trackParam.SetParamFor(*muonTrack); | |
209 | } | |
5473f16a | 210 | thetaX = muonTrack->GetThetaX(); |
211 | thetaY = muonTrack->GetThetaY(); | |
212 | ||
213 | pYZ = 1./TMath::Abs(muonTrack->GetInverseBendingMomentum()); | |
d3c448a1 | 214 | fPzRec1 = - pYZ / TMath::Sqrt(1.0 + TMath::Tan(thetaY)*TMath::Tan(thetaY)); |
5473f16a | 215 | fPxRec1 = fPzRec1 * TMath::Tan(thetaX); |
216 | fPyRec1 = fPzRec1 * TMath::Tan(thetaY); | |
217 | fCharge = Int_t(TMath::Sign(1.,muonTrack->GetInverseBendingMomentum())); | |
218 | ||
219 | fE1 = TMath::Sqrt(muonMass * muonMass + fPxRec1 * fPxRec1 + fPyRec1 * fPyRec1 + fPzRec1 * fPzRec1); | |
220 | fV1.SetPxPyPzE(fPxRec1, fPyRec1, fPzRec1, fE1); | |
221 | ||
222 | ntrackhits = muonTrack->GetNHit(); | |
223 | fitfmin = muonTrack->GetChi2(); | |
224 | ||
225 | // transverse momentum | |
226 | Float_t pt1 = fV1.Pt(); | |
227 | ||
228 | // total momentum | |
229 | Float_t p1 = fV1.P(); | |
230 | ||
231 | // Rapidity | |
232 | Float_t rapMuon1 = fV1.Rapidity(); | |
233 | ||
234 | // chi2 per d.o.f. | |
235 | Float_t ch1 = fitfmin / (2.0 * ntrackhits - 5); | |
236 | // printf(" px %f py %f pz %f NHits %d Norm.chi2 %f charge %d\n", | |
237 | // fPxRec1, fPyRec1, fPzRec1, ntrackhits, ch1, fCharge); | |
238 | ||
239 | // condition for good track (Chi2Cut and PtCut) | |
240 | ||
241 | if ((ch1 < Chi2Cut) && (pt1 > PtCutMin) && (pt1 < PtCutMax)) { | |
242 | ||
243 | // fill histos hPtMuon and hChi2PerDof | |
244 | hPtMuon->Fill(pt1); | |
245 | hPMuon->Fill(p1); | |
246 | hChi2PerDof->Fill(ch1); | |
247 | hRapMuon->Fill(rapMuon1); | |
ac3c5325 | 248 | if (fCharge > 0) { |
249 | hPtMuonPlus->Fill(pt1); | |
250 | hThetaPhiPlus->Fill(TMath::ATan2(fPyRec1,fPxRec1)*180./TMath::Pi(),TMath::ATan2(pt1,fPzRec1)*180./3.1415); | |
251 | } else { | |
252 | hPtMuonMinus->Fill(pt1); | |
253 | hThetaPhiMinus->Fill(TMath::ATan2(fPyRec1,fPxRec1)*180./TMath::Pi(),TMath::ATan2(pt1,fPzRec1)*180./3.1415); | |
254 | } | |
5473f16a | 255 | // loop over second track of combination |
256 | for (Int_t iTrack2 = iTrack + 1; iTrack2 < nTracks; iTrack2++) { | |
257 | ||
258 | AliESDMuonTrack* muonTrack = esd->GetMuonTrack(iTrack2); | |
259 | ||
211c52eb | 260 | if (!Vertex) { |
261 | trackParam.GetParamFrom(*muonTrack); | |
262 | trackParam.ExtrapToVertex(fXVertex, fYVertex, fZVertex); | |
263 | trackParam.SetParamFor(*muonTrack); | |
264 | } | |
265 | ||
5473f16a | 266 | thetaX = muonTrack->GetThetaX(); |
267 | thetaY = muonTrack->GetThetaY(); | |
268 | ||
211c52eb | 269 | pYZ = 1./TMath::Abs(muonTrack->GetInverseBendingMomentum()); |
d3c448a1 | 270 | fPzRec2 = - pYZ / TMath::Sqrt(1.0 + TMath::Tan(thetaY)*TMath::Tan(thetaY)); |
5473f16a | 271 | fPxRec2 = fPzRec2 * TMath::Tan(thetaX); |
272 | fPyRec2 = fPzRec2 * TMath::Tan(thetaY); | |
273 | fCharge2 = Int_t(TMath::Sign(1.,muonTrack->GetInverseBendingMomentum())); | |
274 | ||
275 | fE2 = TMath::Sqrt(muonMass * muonMass + fPxRec2 * fPxRec2 + fPyRec2 * fPyRec2 + fPzRec2 * fPzRec2); | |
276 | fV2.SetPxPyPzE(fPxRec2, fPyRec2, fPzRec2, fE2); | |
277 | ||
278 | ntrackhits = muonTrack->GetNHit(); | |
279 | fitfmin = muonTrack->GetChi2(); | |
280 | ||
281 | // transverse momentum | |
282 | Float_t pt2 = fV2.Pt(); | |
283 | ||
284 | // chi2 per d.o.f. | |
285 | Float_t ch2 = fitfmin / (2.0 * ntrackhits - 5); | |
286 | ||
287 | // condition for good track (Chi2Cut and PtCut) | |
288 | if ((ch2 < Chi2Cut) && (pt2 > PtCutMin) && (pt2 < PtCutMax)) { | |
289 | ||
290 | // condition for opposite charges | |
291 | if ((fCharge * fCharge2) == -1) { | |
292 | ||
293 | // invariant mass | |
294 | fVtot = fV1 + fV2; | |
295 | Float_t invMass = fVtot.M(); | |
296 | ||
297 | // fill histos hInvMassAll and hInvMassRes | |
298 | hInvMassAll->Fill(invMass); | |
299 | hInvMassRes->Fill(invMass); | |
ac3c5325 | 300 | hInvMassAll_vs_Pt->Fill(invMass,fVtot.Pt()); |
6678cd54 | 301 | Int_t ptTrig; |
302 | if (ResType == 553) | |
303 | ptTrig = 0x400;// mask for Hpt unlike sign pair | |
304 | else | |
305 | ptTrig = 0x200;// mask for Lpt unlike sign pair | |
306 | ||
f57d136a | 307 | if (esd->GetTriggerMask() & ptTrig) NbTrigger++; |
5473f16a | 308 | if (invMass > massMin && invMass < massMax) { |
309 | EventInMass++; | |
f57d136a | 310 | if (muonTrack->GetMatchTrigger() && (esd->GetTriggerMask() & ptTrig))// match with trigger |
6678cd54 | 311 | EventInMassMatch++; |
312 | ||
5473f16a | 313 | hRapResonance->Fill(fVtot.Rapidity()); |
314 | hPtResonance->Fill(fVtot.Pt()); | |
315 | } | |
316 | ||
317 | } // if (fCharge * fCharge2) == -1) | |
318 | } // if ((ch2 < Chi2Cut) && (pt2 > PtCutMin) && (pt2 < PtCutMax)) | |
319 | } // for (Int_t iTrack2 = iTrack + 1; iTrack2 < iTrack; iTrack2++) | |
320 | } // if (ch1 < Chi2Cut) && (pt1 > PtCutMin)&& (pt1 < PtCutMax) ) | |
321 | } // for (Int_t iTrack = 0; iTrack < nrectracks; iTrack++) | |
322 | ||
323 | hNumberOfTrack->Fill(nTracks); | |
48d6b312 | 324 | // esdFile->Delete(); |
5473f16a | 325 | } // for (Int_t iEvent = FirstEvent; |
326 | ||
ac3c5325 | 327 | // Loop over events for bg event |
328 | ||
329 | Double_t thetaPlus, phiPlus; | |
330 | Double_t thetaMinus, phiMinus; | |
331 | Float_t PtMinus, PtPlus; | |
332 | ||
333 | for (Int_t iEvent = 0; iEvent < hInvMassAll->Integral(); iEvent++) { | |
334 | ||
335 | hThetaPhiPlus->GetRandom2(phiPlus, thetaPlus); | |
336 | hThetaPhiMinus->GetRandom2(phiMinus,thetaMinus); | |
337 | PtPlus = hPtMuonPlus->GetRandom(); | |
338 | PtMinus = hPtMuonMinus->GetRandom(); | |
339 | ||
340 | fPxRec1 = PtPlus * TMath::Cos(TMath::Pi()/180.*phiPlus); | |
341 | fPyRec1 = PtPlus * TMath::Sin(TMath::Pi()/180.*phiPlus); | |
342 | fPzRec1 = PtPlus / TMath::Tan(TMath::Pi()/180.*thetaPlus); | |
343 | ||
344 | fE1 = TMath::Sqrt(muonMass * muonMass + fPxRec1 * fPxRec1 + fPyRec1 * fPyRec1 + fPzRec1 * fPzRec1); | |
345 | fV1.SetPxPyPzE(fPxRec1, fPyRec1, fPzRec1, fE1); | |
346 | ||
347 | fPxRec2 = PtMinus * TMath::Cos(TMath::Pi()/180.*phiMinus); | |
348 | fPyRec2 = PtMinus * TMath::Sin(TMath::Pi()/180.*phiMinus); | |
349 | fPzRec2 = PtMinus / TMath::Tan(TMath::Pi()/180.*thetaMinus); | |
350 | ||
351 | fE2 = TMath::Sqrt(muonMass * muonMass + fPxRec2 * fPxRec2 + fPyRec2 * fPyRec2 + fPzRec2 * fPzRec2); | |
352 | fV2.SetPxPyPzE(fPxRec2, fPyRec2, fPzRec2, fE2); | |
353 | ||
354 | // invariant mass | |
355 | fVtot = fV1 + fV2; | |
356 | ||
357 | // fill histos hInvMassAll and hInvMassRes | |
358 | hInvMassBg->Fill(fVtot.M()); | |
359 | hInvMassBgk_vs_Pt->Fill( fVtot.M(), fVtot.Pt() ); | |
360 | } | |
361 | ||
5473f16a | 362 | histoFile->Write(); |
363 | histoFile->Close(); | |
364 | ||
6678cd54 | 365 | cout << endl; |
5473f16a | 366 | cout << "EventInMass " << EventInMass << endl; |
6678cd54 | 367 | cout << "NbTrigger " << NbTrigger << endl; |
368 | cout << "EventInMass match with trigger " << EventInMassMatch << endl; | |
5473f16a | 369 | |
370 | return kTRUE; | |
371 | } | |
372 |