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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" | |
16 | #include "AliRunLoader.h" | |
17 | #include "AliHeader.h" | |
18 | #include "AliLoader.h" | |
19 | #include "AliStack.h" | |
cb75342e | 20 | #include "AliMagF.h" |
5473f16a | 21 | #include "AliESD.h" |
22 | ||
23 | // MUON includes | |
211c52eb | 24 | #include "AliMUONTrackParam.h" |
5473f16a | 25 | #include "AliESDMuonTrack.h" |
26 | #endif | |
27 | // | |
28 | // Macro MUONmassPlot.C for ESD | |
29 | // Ch. Finck, Subatech, April. 2004 | |
30 | // | |
31 | ||
32 | // macro to make invariant mass plots | |
33 | // for combinations of 2 muons with opposite charges, | |
34 | // from root file "MUON.tracks.root" containing the result of track reconstruction. | |
35 | // Histograms are stored on the "MUONmassPlot.root" file. | |
36 | // introducing TLorentzVector for parameter calculations (Pt, P,rap,etc...) | |
37 | // using Invariant Mass for rapidity. | |
38 | ||
39 | // Arguments: | |
40 | // FirstEvent (default 0) | |
41 | // LastEvent (default 0) | |
42 | // ResType (default 553) | |
43 | // 553 for Upsilon, anything else for J/Psi | |
44 | // Chi2Cut (default 100) | |
45 | // to keep only tracks with chi2 per d.o.f. < Chi2Cut | |
46 | // PtCutMin (default 1) | |
47 | // to keep only tracks with transverse momentum > PtCutMin | |
48 | // PtCutMax (default 10000) | |
49 | // to keep only tracks with transverse momentum < PtCutMax | |
50 | // massMin (default 9.17 for Upsilon) | |
51 | // & massMax (default 9.77 for Upsilon) | |
52 | // to calculate the reconstruction efficiency for resonances with invariant mass | |
53 | // massMin < mass < massMax. | |
54 | ||
55 | // Add parameters and histograms for analysis | |
56 | ||
57 | Bool_t MUONmassPlot(char* filename = "galice.root", Int_t FirstEvent = 0, Int_t LastEvent = 10000, | |
58 | char* esdFileName = "AliESDs.root", Int_t ResType = 553, | |
59 | Float_t Chi2Cut = 100., Float_t PtCutMin = 1., Float_t PtCutMax = 10000., | |
60 | Float_t massMin = 9.17,Float_t massMax = 9.77) | |
61 | { | |
62 | cout << "MUONmassPlot " << endl; | |
63 | cout << "FirstEvent " << FirstEvent << endl; | |
64 | cout << "LastEvent " << LastEvent << endl; | |
65 | cout << "ResType " << ResType << endl; | |
66 | cout << "Chi2Cut " << Chi2Cut << endl; | |
67 | cout << "PtCutMin " << PtCutMin << endl; | |
68 | cout << "PtCutMax " << PtCutMax << endl; | |
69 | cout << "massMin " << massMin << endl; | |
70 | cout << "massMax " << massMax << endl; | |
71 | ||
72 | ||
73 | //Reset ROOT and connect tree file | |
74 | gROOT->Reset(); | |
75 | ||
5473f16a | 76 | // File for histograms and histogram booking |
77 | TFile *histoFile = new TFile("MUONmassPlot.root", "RECREATE"); | |
78 | TH1F *hPtMuon = new TH1F("hPtMuon", "Muon Pt (GeV/c)", 100, 0., 20.); | |
ac3c5325 | 79 | TH1F *hPtMuonPlus = new TH1F("hPtMuonPlus", "Muon+ Pt (GeV/c)", 100, 0., 20.); |
80 | TH1F *hPtMuonMinus = new TH1F("hPtMuonMinus", "Muon- Pt (GeV/c)", 100, 0., 20.); | |
5473f16a | 81 | TH1F *hPMuon = new TH1F("hPMuon", "Muon P (GeV/c)", 100, 0., 200.); |
82 | TH1F *hChi2PerDof = new TH1F("hChi2PerDof", "Muon track chi2/d.o.f.", 100, 0., 20.); | |
83 | TH1F *hInvMassAll = new TH1F("hInvMassAll", "Mu+Mu- invariant mass (GeV/c2)", 480, 0., 12.); | |
ac3c5325 | 84 | TH1F *hInvMassBg = new TH1F("hInvMassBg", "Mu+Mu- invariant mass BG(GeV/c2)", 480, 0., 12.); |
f57d136a | 85 | TH2F *hInvMassAll_vs_Pt = new TH2F("hInvMassAll_vs_Pt","hInvMassAll_vs_Pt",480,0.,12.,80,0.,20.); |
86 | TH2F *hInvMassBgk_vs_Pt = new TH2F("hInvMassBgk_vs_Pt","hInvMassBgk_vs_Pt",480,0.,12.,80,0.,20.); | |
87 | TH1F *hInvMassRes; | |
6ab68e5f | 88 | TH1F *hPrimaryVertex = new TH1F("hPrimaryVertex","SPD reconstructed Z vertex",150,-15,15); |
5473f16a | 89 | |
90 | if (ResType == 553) { | |
91 | hInvMassRes = new TH1F("hInvMassRes", "Mu+Mu- invariant mass (GeV/c2) around Upsilon", 60, 8., 11.); | |
92 | } else { | |
93 | hInvMassRes = new TH1F("hInvMassRes", "Mu+Mu- invariant mass (GeV/c2) around J/Psi", 80, 0., 5.); | |
94 | } | |
95 | ||
96 | TH1F *hNumberOfTrack = new TH1F("hNumberOfTrack","nb of track /evt ",20,-0.5,19.5); | |
97 | TH1F *hRapMuon = new TH1F("hRapMuon"," Muon Rapidity",50,-4.5,-2); | |
98 | TH1F *hRapResonance = new TH1F("hRapResonance"," Resonance Rapidity",50,-4.5,-2); | |
99 | TH1F *hPtResonance = new TH1F("hPtResonance", "Resonance Pt (GeV/c)", 100, 0., 20.); | |
ac3c5325 | 100 | TH2F *hThetaPhiPlus = new TH2F("hThetaPhiPlus", "Theta vs Phi +", 760, -190., 190., 400, 160., 180.); |
101 | TH2F *hThetaPhiMinus = new TH2F("hThetaPhiMinus", "Theta vs Phi -", 760, -190., 190., 400, 160., 180.); | |
5473f16a | 102 | |
103 | ||
104 | // settings | |
105 | Int_t EventInMass = 0; | |
6678cd54 | 106 | Int_t EventInMassMatch = 0; |
107 | Int_t NbTrigger = 0; | |
108 | ||
5473f16a | 109 | Float_t muonMass = 0.105658389; |
110 | // Float_t UpsilonMass = 9.46037; | |
111 | // Float_t JPsiMass = 3.097; | |
112 | ||
113 | Double_t thetaX, thetaY, pYZ; | |
114 | Double_t fPxRec1, fPyRec1, fPzRec1, fE1; | |
115 | Double_t fPxRec2, fPyRec2, fPzRec2, fE2; | |
116 | Int_t fCharge, fCharge2; | |
117 | ||
118 | Int_t ntrackhits, nevents; | |
119 | Double_t fitfmin; | |
e3c6ae4c | 120 | Double_t fZVertex=0; |
211c52eb | 121 | Double_t fYVertex=0; |
122 | Double_t fXVertex=0; | |
5473f16a | 123 | |
124 | TLorentzVector fV1, fV2, fVtot; | |
cb75342e | 125 | |
126 | // set off mag field | |
127 | AliMagF::SetReadField(kFALSE); | |
128 | ||
5473f16a | 129 | // open run loader and load gAlice, kinematics and header |
130 | AliRunLoader* runLoader = AliRunLoader::Open(filename); | |
131 | if (!runLoader) { | |
132 | Error("MUONmass_ESD", "getting run loader from file %s failed", | |
133 | filename); | |
134 | return kFALSE; | |
135 | } | |
136 | ||
5473f16a | 137 | if (!gAlice) { |
138 | Error("MUONmass_ESD", "no galice object found"); | |
139 | return kFALSE; | |
140 | } | |
141 | ||
142 | ||
143 | // open the ESD file | |
144 | TFile* esdFile = TFile::Open(esdFileName); | |
145 | if (!esdFile || !esdFile->IsOpen()) { | |
146 | Error("MUONmass_ESD", "opening ESD file %s failed", esdFileName); | |
147 | return kFALSE; | |
148 | } | |
149 | ||
48d6b312 | 150 | AliESD* esd = new AliESD(); |
151 | TTree* tree = (TTree*) esdFile->Get("esdTree"); | |
152 | if (!tree) { | |
153 | Error("CheckESD", "no ESD tree found"); | |
154 | return kFALSE; | |
155 | } | |
156 | tree->SetBranchAddress("ESD", &esd); | |
f9ebb3bd | 157 | |
158 | ||
48d6b312 | 159 | |
5473f16a | 160 | runLoader->LoadHeader(); |
161 | nevents = runLoader->GetNumberOfEvents(); | |
211c52eb | 162 | |
163 | AliMUONTrackParam trackParam; | |
164 | ||
5473f16a | 165 | // Loop over events |
166 | for (Int_t iEvent = FirstEvent; iEvent <= TMath::Min(LastEvent, nevents - 1); iEvent++) { | |
167 | ||
168 | // get current event | |
169 | runLoader->GetEvent(iEvent); | |
48d6b312 | 170 | |
5473f16a | 171 | // get the event summary data |
48d6b312 | 172 | tree->GetEvent(iEvent); |
5473f16a | 173 | if (!esd) { |
48d6b312 | 174 | Error("CheckESD", "no ESD object found for event %d", iEvent); |
5473f16a | 175 | return kFALSE; |
176 | } | |
177 | ||
f9ebb3bd | 178 | // get the SPD reconstructed vertex (vertexer) and fill the histogram |
6ab68e5f | 179 | AliESDVertex* Vertex = (AliESDVertex*) esd->AliESD::GetVertex(); |
211c52eb | 180 | |
181 | if (Vertex) { | |
182 | fZVertex = Vertex->GetZv(); | |
183 | fYVertex = Vertex->GetYv(); | |
184 | fXVertex = Vertex->GetXv(); | |
185 | ||
186 | } | |
f9ebb3bd | 187 | hPrimaryVertex->Fill(fZVertex); |
188 | ||
48d6b312 | 189 | Int_t nTracks = (Int_t)esd->GetNumberOfMuonTracks() ; |
5473f16a | 190 | |
191 | // printf("\n Nb of events analysed: %d\r",iEvent); | |
48d6b312 | 192 | // cout << " number of tracks: " << nTracks <<endl; |
5473f16a | 193 | |
194 | // loop over all reconstructed tracks (also first track of combination) | |
195 | for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) { | |
196 | ||
197 | AliESDMuonTrack* muonTrack = esd->GetMuonTrack(iTrack); | |
198 | ||
211c52eb | 199 | if (!Vertex) { |
200 | //re-extrapolate to vertex, if not kown before. | |
201 | trackParam.GetParamFrom(*muonTrack); | |
202 | trackParam.ExtrapToVertex(fXVertex, fYVertex, fZVertex); | |
203 | trackParam.SetParamFor(*muonTrack); | |
204 | } | |
5473f16a | 205 | thetaX = muonTrack->GetThetaX(); |
206 | thetaY = muonTrack->GetThetaY(); | |
207 | ||
208 | pYZ = 1./TMath::Abs(muonTrack->GetInverseBendingMomentum()); | |
d3c448a1 | 209 | fPzRec1 = - pYZ / TMath::Sqrt(1.0 + TMath::Tan(thetaY)*TMath::Tan(thetaY)); |
5473f16a | 210 | fPxRec1 = fPzRec1 * TMath::Tan(thetaX); |
211 | fPyRec1 = fPzRec1 * TMath::Tan(thetaY); | |
212 | fCharge = Int_t(TMath::Sign(1.,muonTrack->GetInverseBendingMomentum())); | |
213 | ||
214 | fE1 = TMath::Sqrt(muonMass * muonMass + fPxRec1 * fPxRec1 + fPyRec1 * fPyRec1 + fPzRec1 * fPzRec1); | |
215 | fV1.SetPxPyPzE(fPxRec1, fPyRec1, fPzRec1, fE1); | |
216 | ||
217 | ntrackhits = muonTrack->GetNHit(); | |
218 | fitfmin = muonTrack->GetChi2(); | |
219 | ||
220 | // transverse momentum | |
221 | Float_t pt1 = fV1.Pt(); | |
222 | ||
223 | // total momentum | |
224 | Float_t p1 = fV1.P(); | |
225 | ||
226 | // Rapidity | |
227 | Float_t rapMuon1 = fV1.Rapidity(); | |
228 | ||
229 | // chi2 per d.o.f. | |
230 | Float_t ch1 = fitfmin / (2.0 * ntrackhits - 5); | |
231 | // printf(" px %f py %f pz %f NHits %d Norm.chi2 %f charge %d\n", | |
232 | // fPxRec1, fPyRec1, fPzRec1, ntrackhits, ch1, fCharge); | |
233 | ||
234 | // condition for good track (Chi2Cut and PtCut) | |
235 | ||
236 | if ((ch1 < Chi2Cut) && (pt1 > PtCutMin) && (pt1 < PtCutMax)) { | |
237 | ||
238 | // fill histos hPtMuon and hChi2PerDof | |
239 | hPtMuon->Fill(pt1); | |
240 | hPMuon->Fill(p1); | |
241 | hChi2PerDof->Fill(ch1); | |
242 | hRapMuon->Fill(rapMuon1); | |
ac3c5325 | 243 | if (fCharge > 0) { |
244 | hPtMuonPlus->Fill(pt1); | |
245 | hThetaPhiPlus->Fill(TMath::ATan2(fPyRec1,fPxRec1)*180./TMath::Pi(),TMath::ATan2(pt1,fPzRec1)*180./3.1415); | |
246 | } else { | |
247 | hPtMuonMinus->Fill(pt1); | |
248 | hThetaPhiMinus->Fill(TMath::ATan2(fPyRec1,fPxRec1)*180./TMath::Pi(),TMath::ATan2(pt1,fPzRec1)*180./3.1415); | |
249 | } | |
5473f16a | 250 | // loop over second track of combination |
251 | for (Int_t iTrack2 = iTrack + 1; iTrack2 < nTracks; iTrack2++) { | |
252 | ||
253 | AliESDMuonTrack* muonTrack = esd->GetMuonTrack(iTrack2); | |
254 | ||
211c52eb | 255 | if (!Vertex) { |
256 | trackParam.GetParamFrom(*muonTrack); | |
257 | trackParam.ExtrapToVertex(fXVertex, fYVertex, fZVertex); | |
258 | trackParam.SetParamFor(*muonTrack); | |
259 | } | |
260 | ||
5473f16a | 261 | thetaX = muonTrack->GetThetaX(); |
262 | thetaY = muonTrack->GetThetaY(); | |
263 | ||
211c52eb | 264 | pYZ = 1./TMath::Abs(muonTrack->GetInverseBendingMomentum()); |
d3c448a1 | 265 | fPzRec2 = - pYZ / TMath::Sqrt(1.0 + TMath::Tan(thetaY)*TMath::Tan(thetaY)); |
5473f16a | 266 | fPxRec2 = fPzRec2 * TMath::Tan(thetaX); |
267 | fPyRec2 = fPzRec2 * TMath::Tan(thetaY); | |
268 | fCharge2 = Int_t(TMath::Sign(1.,muonTrack->GetInverseBendingMomentum())); | |
269 | ||
270 | fE2 = TMath::Sqrt(muonMass * muonMass + fPxRec2 * fPxRec2 + fPyRec2 * fPyRec2 + fPzRec2 * fPzRec2); | |
271 | fV2.SetPxPyPzE(fPxRec2, fPyRec2, fPzRec2, fE2); | |
272 | ||
273 | ntrackhits = muonTrack->GetNHit(); | |
274 | fitfmin = muonTrack->GetChi2(); | |
275 | ||
276 | // transverse momentum | |
277 | Float_t pt2 = fV2.Pt(); | |
278 | ||
279 | // chi2 per d.o.f. | |
280 | Float_t ch2 = fitfmin / (2.0 * ntrackhits - 5); | |
281 | ||
282 | // condition for good track (Chi2Cut and PtCut) | |
283 | if ((ch2 < Chi2Cut) && (pt2 > PtCutMin) && (pt2 < PtCutMax)) { | |
284 | ||
285 | // condition for opposite charges | |
286 | if ((fCharge * fCharge2) == -1) { | |
287 | ||
288 | // invariant mass | |
289 | fVtot = fV1 + fV2; | |
290 | Float_t invMass = fVtot.M(); | |
291 | ||
292 | // fill histos hInvMassAll and hInvMassRes | |
293 | hInvMassAll->Fill(invMass); | |
294 | hInvMassRes->Fill(invMass); | |
ac3c5325 | 295 | hInvMassAll_vs_Pt->Fill(invMass,fVtot.Pt()); |
6678cd54 | 296 | Int_t ptTrig; |
297 | if (ResType == 553) | |
298 | ptTrig = 0x400;// mask for Hpt unlike sign pair | |
299 | else | |
300 | ptTrig = 0x200;// mask for Lpt unlike sign pair | |
301 | ||
f57d136a | 302 | if (esd->GetTriggerMask() & ptTrig) NbTrigger++; |
5473f16a | 303 | if (invMass > massMin && invMass < massMax) { |
304 | EventInMass++; | |
f57d136a | 305 | if (muonTrack->GetMatchTrigger() && (esd->GetTriggerMask() & ptTrig))// match with trigger |
6678cd54 | 306 | EventInMassMatch++; |
307 | ||
5473f16a | 308 | hRapResonance->Fill(fVtot.Rapidity()); |
309 | hPtResonance->Fill(fVtot.Pt()); | |
310 | } | |
311 | ||
312 | } // if (fCharge * fCharge2) == -1) | |
313 | } // if ((ch2 < Chi2Cut) && (pt2 > PtCutMin) && (pt2 < PtCutMax)) | |
314 | } // for (Int_t iTrack2 = iTrack + 1; iTrack2 < iTrack; iTrack2++) | |
315 | } // if (ch1 < Chi2Cut) && (pt1 > PtCutMin)&& (pt1 < PtCutMax) ) | |
316 | } // for (Int_t iTrack = 0; iTrack < nrectracks; iTrack++) | |
317 | ||
318 | hNumberOfTrack->Fill(nTracks); | |
48d6b312 | 319 | // esdFile->Delete(); |
5473f16a | 320 | } // for (Int_t iEvent = FirstEvent; |
321 | ||
ac3c5325 | 322 | // Loop over events for bg event |
323 | ||
324 | Double_t thetaPlus, phiPlus; | |
325 | Double_t thetaMinus, phiMinus; | |
326 | Float_t PtMinus, PtPlus; | |
327 | ||
328 | for (Int_t iEvent = 0; iEvent < hInvMassAll->Integral(); iEvent++) { | |
329 | ||
330 | hThetaPhiPlus->GetRandom2(phiPlus, thetaPlus); | |
331 | hThetaPhiMinus->GetRandom2(phiMinus,thetaMinus); | |
332 | PtPlus = hPtMuonPlus->GetRandom(); | |
333 | PtMinus = hPtMuonMinus->GetRandom(); | |
334 | ||
335 | fPxRec1 = PtPlus * TMath::Cos(TMath::Pi()/180.*phiPlus); | |
336 | fPyRec1 = PtPlus * TMath::Sin(TMath::Pi()/180.*phiPlus); | |
337 | fPzRec1 = PtPlus / TMath::Tan(TMath::Pi()/180.*thetaPlus); | |
338 | ||
339 | fE1 = TMath::Sqrt(muonMass * muonMass + fPxRec1 * fPxRec1 + fPyRec1 * fPyRec1 + fPzRec1 * fPzRec1); | |
340 | fV1.SetPxPyPzE(fPxRec1, fPyRec1, fPzRec1, fE1); | |
341 | ||
342 | fPxRec2 = PtMinus * TMath::Cos(TMath::Pi()/180.*phiMinus); | |
343 | fPyRec2 = PtMinus * TMath::Sin(TMath::Pi()/180.*phiMinus); | |
344 | fPzRec2 = PtMinus / TMath::Tan(TMath::Pi()/180.*thetaMinus); | |
345 | ||
346 | fE2 = TMath::Sqrt(muonMass * muonMass + fPxRec2 * fPxRec2 + fPyRec2 * fPyRec2 + fPzRec2 * fPzRec2); | |
347 | fV2.SetPxPyPzE(fPxRec2, fPyRec2, fPzRec2, fE2); | |
348 | ||
349 | // invariant mass | |
350 | fVtot = fV1 + fV2; | |
351 | ||
352 | // fill histos hInvMassAll and hInvMassRes | |
353 | hInvMassBg->Fill(fVtot.M()); | |
354 | hInvMassBgk_vs_Pt->Fill( fVtot.M(), fVtot.Pt() ); | |
355 | } | |
356 | ||
5473f16a | 357 | histoFile->Write(); |
358 | histoFile->Close(); | |
359 | ||
6678cd54 | 360 | cout << endl; |
5473f16a | 361 | cout << "EventInMass " << EventInMass << endl; |
6678cd54 | 362 | cout << "NbTrigger " << NbTrigger << endl; |
363 | cout << "EventInMass match with trigger " << EventInMassMatch << endl; | |
5473f16a | 364 | |
365 | return kTRUE; | |
366 | } | |
367 |