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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> | |
8cde4af5 | 13 | #include <TGeoManager.h> |
21939432 | 14 | #include <TROOT.h> |
5473f16a | 15 | |
16 | // STEER includes | |
0ff94351 | 17 | #include "AliLog.h" |
a99c3449 | 18 | #include "AliCDBManager.h" |
1c2bdf00 | 19 | #include "AliESDEvent.h" |
995a61aa | 20 | #include "AliESDVertex.h" |
103e6575 | 21 | #include "AliESDMuonTrack.h" |
5473f16a | 22 | |
23 | // MUON includes | |
a99c3449 | 24 | #include "AliMUONCDB.h" |
211c52eb | 25 | #include "AliMUONTrackParam.h" |
37827b29 | 26 | #include "AliMUONTrackExtrap.h" |
103e6575 | 27 | #include "AliMUONESDInterface.h" |
05b4bc73 | 28 | #include "AliMUONConstants.h" |
5473f16a | 29 | #endif |
5473f16a | 30 | |
e54bf126 | 31 | /// \ingroup macros |
32 | /// \file MUONmassPlot_ESD.C | |
a99c3449 | 33 | /// \brief Macro MUONmassPlot_ESD.C for ESD |
e54bf126 | 34 | /// |
35 | /// \author Ch. Finck, Subatech, April. 2004 | |
36 | /// | |
37 | /// | |
38 | /// Macro to make invariant mass plots | |
39 | /// for combinations of 2 muons with opposite charges, | |
40 | /// from root file "MUON.tracks.root" containing the result of track reconstruction. | |
41 | /// Histograms are stored on the "MUONmassPlot.root" file. | |
42 | /// introducing TLorentzVector for parameter calculations (Pt, P,rap,etc...) | |
43 | /// using Invariant Mass for rapidity. | |
44 | /// | |
45 | /// Add parameters and histograms for analysis | |
5473f16a | 46 | |
a99c3449 | 47 | Bool_t MUONmassPlot(const char* esdFileName = "AliESDs.root", const char* geoFilename = "geometry.root", |
48 | const char* ocdbPath = "local://$ALICE_ROOT/OCDB", | |
05b4bc73 | 49 | Int_t FirstEvent = 0, Int_t LastEvent = -1, Int_t ExtrapToVertex = -1, |
a99c3449 | 50 | Int_t ResType = 553, Float_t Chi2Cut = 100., Float_t PtCutMin = 1., |
51 | Float_t PtCutMax = 10000., Float_t massMin = 9.17,Float_t massMax = 9.77) | |
5473f16a | 52 | { |
a99c3449 | 53 | /// \param FirstEvent (default 0) |
54 | /// \param LastEvent (default 10000) | |
55 | /// \param ExtrapToVertex (default -1) | |
56 | /// - <0: no extrapolation; | |
57 | /// - =0: extrapolation to (0,0,0); | |
58 | /// - >0: extrapolation to ESDVertex if available, else to (0,0,0) | |
59 | /// \param ResType 553 for Upsilon, anything else for J/Psi (default 553) | |
60 | /// \param Chi2Cut to keep only tracks with chi2 per d.o.f. < Chi2Cut (default 100) | |
61 | /// \param PtCutMin to keep only tracks with transverse momentum > PtCutMin (default 1) | |
62 | /// \param PtCutMax to keep only tracks with transverse momentum < PtCutMax (default 10000) | |
63 | /// \param massMin (default 9.17 for Upsilon) | |
64 | /// \param massMax (default 9.77 for Upsilon); | |
65 | /// to calculate the reconstruction efficiency for resonances with invariant mass | |
66 | /// massMin < mass < massMax. | |
e54bf126 | 67 | |
5473f16a | 68 | cout << "MUONmassPlot " << endl; |
69 | cout << "FirstEvent " << FirstEvent << endl; | |
05b4bc73 | 70 | cout << "LastEvent " << ((LastEvent>=0) ? Form("%d",LastEvent) : "all") << endl; |
5473f16a | 71 | cout << "ResType " << ResType << endl; |
72 | cout << "Chi2Cut " << Chi2Cut << endl; | |
73 | cout << "PtCutMin " << PtCutMin << endl; | |
74 | cout << "PtCutMax " << PtCutMax << endl; | |
75 | cout << "massMin " << massMin << endl; | |
76 | cout << "massMax " << massMax << endl; | |
77 | ||
78 | ||
79 | //Reset ROOT and connect tree file | |
80 | gROOT->Reset(); | |
81 | ||
5473f16a | 82 | // File for histograms and histogram booking |
83 | TFile *histoFile = new TFile("MUONmassPlot.root", "RECREATE"); | |
84 | TH1F *hPtMuon = new TH1F("hPtMuon", "Muon Pt (GeV/c)", 100, 0., 20.); | |
ac3c5325 | 85 | TH1F *hPtMuonPlus = new TH1F("hPtMuonPlus", "Muon+ Pt (GeV/c)", 100, 0., 20.); |
86 | TH1F *hPtMuonMinus = new TH1F("hPtMuonMinus", "Muon- Pt (GeV/c)", 100, 0., 20.); | |
5473f16a | 87 | TH1F *hPMuon = new TH1F("hPMuon", "Muon P (GeV/c)", 100, 0., 200.); |
88 | TH1F *hChi2PerDof = new TH1F("hChi2PerDof", "Muon track chi2/d.o.f.", 100, 0., 20.); | |
89 | TH1F *hInvMassAll = new TH1F("hInvMassAll", "Mu+Mu- invariant mass (GeV/c2)", 480, 0., 12.); | |
ac3c5325 | 90 | TH1F *hInvMassBg = new TH1F("hInvMassBg", "Mu+Mu- invariant mass BG(GeV/c2)", 480, 0., 12.); |
f57d136a | 91 | TH2F *hInvMassAll_vs_Pt = new TH2F("hInvMassAll_vs_Pt","hInvMassAll_vs_Pt",480,0.,12.,80,0.,20.); |
92 | TH2F *hInvMassBgk_vs_Pt = new TH2F("hInvMassBgk_vs_Pt","hInvMassBgk_vs_Pt",480,0.,12.,80,0.,20.); | |
93 | TH1F *hInvMassRes; | |
6ab68e5f | 94 | TH1F *hPrimaryVertex = new TH1F("hPrimaryVertex","SPD reconstructed Z vertex",150,-15,15); |
5473f16a | 95 | |
96 | if (ResType == 553) { | |
97 | hInvMassRes = new TH1F("hInvMassRes", "Mu+Mu- invariant mass (GeV/c2) around Upsilon", 60, 8., 11.); | |
98 | } else { | |
99 | hInvMassRes = new TH1F("hInvMassRes", "Mu+Mu- invariant mass (GeV/c2) around J/Psi", 80, 0., 5.); | |
100 | } | |
101 | ||
102 | TH1F *hNumberOfTrack = new TH1F("hNumberOfTrack","nb of track /evt ",20,-0.5,19.5); | |
103 | TH1F *hRapMuon = new TH1F("hRapMuon"," Muon Rapidity",50,-4.5,-2); | |
104 | TH1F *hRapResonance = new TH1F("hRapResonance"," Resonance Rapidity",50,-4.5,-2); | |
105 | TH1F *hPtResonance = new TH1F("hPtResonance", "Resonance Pt (GeV/c)", 100, 0., 20.); | |
ac3c5325 | 106 | TH2F *hThetaPhiPlus = new TH2F("hThetaPhiPlus", "Theta vs Phi +", 760, -190., 190., 400, 160., 180.); |
107 | TH2F *hThetaPhiMinus = new TH2F("hThetaPhiMinus", "Theta vs Phi -", 760, -190., 190., 400, 160., 180.); | |
5473f16a | 108 | |
109 | ||
110 | // settings | |
111 | Int_t EventInMass = 0; | |
6678cd54 | 112 | Int_t EventInMassMatch = 0; |
113 | Int_t NbTrigger = 0; | |
114 | ||
5473f16a | 115 | Float_t muonMass = 0.105658389; |
116 | // Float_t UpsilonMass = 9.46037; | |
117 | // Float_t JPsiMass = 3.097; | |
118 | ||
22ccc301 | 119 | Int_t fCharge1, fCharge2; |
5473f16a | 120 | Double_t fPxRec1, fPyRec1, fPzRec1, fE1; |
121 | Double_t fPxRec2, fPyRec2, fPzRec2, fE2; | |
5473f16a | 122 | |
a99c3449 | 123 | Int_t ntrackhits; |
5473f16a | 124 | Double_t fitfmin; |
e3c6ae4c | 125 | Double_t fZVertex=0; |
211c52eb | 126 | Double_t fYVertex=0; |
127 | Double_t fXVertex=0; | |
690d2205 | 128 | Double_t errXVtx=0; |
129 | Double_t errYVtx=0; | |
5473f16a | 130 | |
131 | TLorentzVector fV1, fV2, fVtot; | |
a99c3449 | 132 | |
8cde4af5 | 133 | // Import TGeo geometry (needed by AliMUONTrackExtrap::ExtrapToVertex) |
134 | if (!gGeoManager) { | |
135 | TGeoManager::Import(geoFilename); | |
136 | if (!gGeoManager) { | |
cec5541f | 137 | Error("MUONmass_ESD", "getting geometry from file %s failed", geoFilename); |
8cde4af5 | 138 | return kFALSE; |
139 | } | |
140 | } | |
141 | ||
5473f16a | 142 | // open the ESD file |
143 | TFile* esdFile = TFile::Open(esdFileName); | |
144 | if (!esdFile || !esdFile->IsOpen()) { | |
145 | Error("MUONmass_ESD", "opening ESD file %s failed", esdFileName); | |
146 | return kFALSE; | |
147 | } | |
1c2bdf00 | 148 | AliESDEvent* esd = new AliESDEvent(); |
48d6b312 | 149 | TTree* tree = (TTree*) esdFile->Get("esdTree"); |
150 | if (!tree) { | |
a99c3449 | 151 | Error("MUONmass_ESD", "no ESD tree found"); |
48d6b312 | 152 | return kFALSE; |
153 | } | |
8b4a9b89 | 154 | esd->ReadFromTree(tree); |
f9ebb3bd | 155 | |
a99c3449 | 156 | // get run number |
157 | if (tree->GetEvent(0) <= 0) { | |
158 | Error("MUONmass_ESD", "no ESD object found for event 0"); | |
159 | return kFALSE; | |
160 | } | |
161 | Int_t runNumber = esd->GetRunNumber(); | |
162 | ||
163 | // load necessary data from OCDB | |
164 | AliCDBManager::Instance()->SetDefaultStorage(ocdbPath); | |
05b4bc73 | 165 | AliCDBManager::Instance()->SetSpecificStorage("GRP/GRP/Data","local://."); |
a99c3449 | 166 | AliCDBManager::Instance()->SetRun(runNumber); |
167 | if (!AliMUONCDB::LoadField()) return kFALSE; | |
168 | ||
169 | // set the magnetic field for track extrapolations | |
170 | AliMUONTrackExtrap::SetField(); | |
211c52eb | 171 | |
172 | AliMUONTrackParam trackParam; | |
05b4bc73 | 173 | AliMUONTrackParam trackParamAtAbsEnd; |
174 | ||
5473f16a | 175 | // Loop over events |
05b4bc73 | 176 | Int_t nevents = (LastEvent >= 0) ? TMath::Min(LastEvent, (Int_t)tree->GetEntries()-1) : (Int_t)tree->GetEntries()-1; |
177 | for (Int_t iEvent = FirstEvent; iEvent <= nevents; iEvent++) { | |
5473f16a | 178 | |
5473f16a | 179 | // get the event summary data |
a99c3449 | 180 | if (tree->GetEvent(iEvent) <= 0) { |
181 | Error("MUONmass_ESD", "no ESD object found for event %d", iEvent); | |
5473f16a | 182 | return kFALSE; |
183 | } | |
a99c3449 | 184 | |
f9ebb3bd | 185 | // get the SPD reconstructed vertex (vertexer) and fill the histogram |
43939bd8 | 186 | AliESDVertex* Vertex = (AliESDVertex*) esd->GetVertex(); |
43939bd8 | 187 | if (Vertex->GetNContributors()) { |
e690d4d0 | 188 | fZVertex = Vertex->GetZ(); |
189 | fYVertex = Vertex->GetY(); | |
190 | fXVertex = Vertex->GetX(); | |
690d2205 | 191 | errXVtx = Vertex->GetXRes(); |
192 | errYVtx = Vertex->GetYRes(); | |
211c52eb | 193 | } |
f9ebb3bd | 194 | hPrimaryVertex->Fill(fZVertex); |
195 | ||
48d6b312 | 196 | Int_t nTracks = (Int_t)esd->GetNumberOfMuonTracks() ; |
5473f16a | 197 | |
198 | // printf("\n Nb of events analysed: %d\r",iEvent); | |
48d6b312 | 199 | // cout << " number of tracks: " << nTracks <<endl; |
5473f16a | 200 | |
201 | // loop over all reconstructed tracks (also first track of combination) | |
202 | for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) { | |
203 | ||
b1fea02e | 204 | // skip ghosts |
205 | if (!esd->GetMuonTrack(iTrack)->ContainTrackerData()) continue; | |
206 | ||
8cde4af5 | 207 | AliESDMuonTrack* muonTrack = new AliESDMuonTrack(*(esd->GetMuonTrack(iTrack))); |
5473f16a | 208 | |
8cde4af5 | 209 | // extrapolate to vertex if required and available |
210 | if (ExtrapToVertex > 0 && Vertex->GetNContributors()) { | |
103e6575 | 211 | AliMUONESDInterface::GetParamAtFirstCluster(*muonTrack, trackParam); |
690d2205 | 212 | AliMUONTrackExtrap::ExtrapToVertex(&trackParam, fXVertex, fYVertex, fZVertex, errXVtx, errYVtx); |
103e6575 | 213 | AliMUONESDInterface::SetParamAtVertex(trackParam, *muonTrack); // put the new parameters in this copy of AliESDMuonTrack |
8cde4af5 | 214 | } else if ((ExtrapToVertex > 0 && !Vertex->GetNContributors()) || ExtrapToVertex == 0){ |
103e6575 | 215 | AliMUONESDInterface::GetParamAtFirstCluster(*muonTrack, trackParam); |
690d2205 | 216 | AliMUONTrackExtrap::ExtrapToVertex(&trackParam, 0., 0., 0., 0., 0.); |
103e6575 | 217 | AliMUONESDInterface::SetParamAtVertex(trackParam, *muonTrack); // put the new parameters in this copy of AliESDMuonTrack |
211c52eb | 218 | } |
8cde4af5 | 219 | |
05b4bc73 | 220 | // compute track position at the end of the absorber |
221 | AliMUONESDInterface::GetParamAtFirstCluster(*muonTrack, trackParamAtAbsEnd); | |
222 | AliMUONTrackExtrap::ExtrapToZ(&trackParamAtAbsEnd, AliMUONConstants::AbsZEnd()); | |
223 | Double_t xAbs = trackParamAtAbsEnd.GetNonBendingCoor(); | |
224 | Double_t yAbs = trackParamAtAbsEnd.GetBendingCoor(); | |
225 | Double_t dAbs1 = TMath::Sqrt(xAbs*xAbs + yAbs*yAbs); | |
226 | Double_t aAbs1 = TMath::ATan(-dAbs1/AliMUONConstants::AbsZEnd()) * TMath::RadToDeg(); | |
227 | ||
22ccc301 | 228 | fCharge1 = Int_t(TMath::Sign(1.,muonTrack->GetInverseBendingMomentum())); |
229 | ||
230 | muonTrack->LorentzP(fV1); | |
8cde4af5 | 231 | |
5473f16a | 232 | ntrackhits = muonTrack->GetNHit(); |
233 | fitfmin = muonTrack->GetChi2(); | |
234 | ||
235 | // transverse momentum | |
236 | Float_t pt1 = fV1.Pt(); | |
237 | ||
238 | // total momentum | |
239 | Float_t p1 = fV1.P(); | |
240 | ||
241 | // Rapidity | |
242 | Float_t rapMuon1 = fV1.Rapidity(); | |
243 | ||
244 | // chi2 per d.o.f. | |
245 | Float_t ch1 = fitfmin / (2.0 * ntrackhits - 5); | |
246 | // printf(" px %f py %f pz %f NHits %d Norm.chi2 %f charge %d\n", | |
22ccc301 | 247 | // fPxRec1, fPyRec1, fPzRec1, ntrackhits, ch1, fCharge1); |
5473f16a | 248 | |
249 | // condition for good track (Chi2Cut and PtCut) | |
250 | ||
a99c3449 | 251 | // if ((ch1 < Chi2Cut) && (pt1 > PtCutMin) && (pt1 < PtCutMax)) { |
5473f16a | 252 | |
253 | // fill histos hPtMuon and hChi2PerDof | |
254 | hPtMuon->Fill(pt1); | |
255 | hPMuon->Fill(p1); | |
256 | hChi2PerDof->Fill(ch1); | |
257 | hRapMuon->Fill(rapMuon1); | |
22ccc301 | 258 | if (fCharge1 > 0) { |
ac3c5325 | 259 | hPtMuonPlus->Fill(pt1); |
22ccc301 | 260 | hThetaPhiPlus->Fill(fV1.Phi()*180./TMath::Pi(),fV1.Theta()*180./TMath::Pi()); |
ac3c5325 | 261 | } else { |
262 | hPtMuonMinus->Fill(pt1); | |
22ccc301 | 263 | hThetaPhiMinus->Fill(fV1.Phi()*180./TMath::Pi(),fV1.Theta()*180./TMath::Pi()); |
ac3c5325 | 264 | } |
5473f16a | 265 | // loop over second track of combination |
266 | for (Int_t iTrack2 = iTrack + 1; iTrack2 < nTracks; iTrack2++) { | |
267 | ||
b1fea02e | 268 | // skip ghosts |
269 | if (!esd->GetMuonTrack(iTrack2)->ContainTrackerData()) continue; | |
270 | ||
8cde4af5 | 271 | AliESDMuonTrack* muonTrack2 = new AliESDMuonTrack(*(esd->GetMuonTrack(iTrack2))); |
272 | ||
273 | // extrapolate to vertex if required and available | |
274 | if (ExtrapToVertex > 0 && Vertex->GetNContributors()) { | |
103e6575 | 275 | AliMUONESDInterface::GetParamAtFirstCluster(*muonTrack2, trackParam); |
690d2205 | 276 | AliMUONTrackExtrap::ExtrapToVertex(&trackParam, fXVertex, fYVertex, fZVertex, errXVtx, errYVtx); |
103e6575 | 277 | AliMUONESDInterface::SetParamAtVertex(trackParam, *muonTrack2); // put the new parameters in this copy of AliESDMuonTrack |
8cde4af5 | 278 | } else if ((ExtrapToVertex > 0 && !Vertex->GetNContributors()) || ExtrapToVertex == 0){ |
103e6575 | 279 | AliMUONESDInterface::GetParamAtFirstCluster(*muonTrack2, trackParam); |
690d2205 | 280 | AliMUONTrackExtrap::ExtrapToVertex(&trackParam, 0., 0., 0., 0., 0.); |
103e6575 | 281 | AliMUONESDInterface::SetParamAtVertex(trackParam, *muonTrack2); // put the new parameters in this copy of AliESDMuonTrack |
211c52eb | 282 | } |
8cde4af5 | 283 | |
05b4bc73 | 284 | // compute track position at the end of the absorber |
285 | AliMUONESDInterface::GetParamAtFirstCluster(*muonTrack2, trackParamAtAbsEnd); | |
286 | AliMUONTrackExtrap::ExtrapToZ(&trackParamAtAbsEnd, AliMUONConstants::AbsZEnd()); | |
287 | xAbs = trackParamAtAbsEnd.GetNonBendingCoor(); | |
288 | yAbs = trackParamAtAbsEnd.GetBendingCoor(); | |
289 | Double_t dAbs2 = TMath::Sqrt(xAbs*xAbs + yAbs*yAbs); | |
290 | Double_t aAbs2 = TMath::ATan(-dAbs2/AliMUONConstants::AbsZEnd()) * TMath::RadToDeg(); | |
291 | ||
8cde4af5 | 292 | fCharge2 = Int_t(TMath::Sign(1.,muonTrack2->GetInverseBendingMomentum())); |
5473f16a | 293 | |
22ccc301 | 294 | muonTrack2->LorentzP(fV2); |
5473f16a | 295 | |
8cde4af5 | 296 | ntrackhits = muonTrack2->GetNHit(); |
297 | fitfmin = muonTrack2->GetChi2(); | |
5473f16a | 298 | |
299 | // transverse momentum | |
300 | Float_t pt2 = fV2.Pt(); | |
301 | ||
302 | // chi2 per d.o.f. | |
303 | Float_t ch2 = fitfmin / (2.0 * ntrackhits - 5); | |
304 | ||
305 | // condition for good track (Chi2Cut and PtCut) | |
a99c3449 | 306 | // if ((ch2 < Chi2Cut) && (pt2 > PtCutMin) && (pt2 < PtCutMax)) { |
05b4bc73 | 307 | // if (aAbs1 < 2. || aAbs2 < 2.) { |
308 | // if (aAbs1 > 2. && aAbs2 > 2. && (aAbs1 < 2.1 || aAbs2 < 2.1)) { | |
309 | // if (aAbs1 > 2. && aAbs2 > 2. && (dAbs1 < 17.8 || dAbs2 < 17.8)) { | |
310 | // if (dAbs1 > 17.8 && dAbs2 > 17.8 && (dAbs1 < 18. || dAbs2 < 18.)) { | |
311 | // if (dAbs1 > 18. && dAbs2 > 18. && (dAbs1 < 18.2 || dAbs2 < 18.2)) { | |
312 | // if (dAbs1 > 18.2 && dAbs2 > 18.2 && (aAbs1 < 2.1 || aAbs2 < 2.1)) { | |
313 | // if (dAbs1 > 18. && dAbs2 > 18.) { | |
314 | // if (aAbs1 > 2.1 && aAbs2 > 2.1) { | |
315 | // if (muonTrack->GetMatchTrigger() && muonTrack2->GetMatchTrigger()) { | |
5473f16a | 316 | |
317 | // condition for opposite charges | |
22ccc301 | 318 | if ((fCharge1 * fCharge2) == -1) { |
5473f16a | 319 | |
320 | // invariant mass | |
321 | fVtot = fV1 + fV2; | |
322 | Float_t invMass = fVtot.M(); | |
323 | ||
324 | // fill histos hInvMassAll and hInvMassRes | |
325 | hInvMassAll->Fill(invMass); | |
326 | hInvMassRes->Fill(invMass); | |
ac3c5325 | 327 | hInvMassAll_vs_Pt->Fill(invMass,fVtot.Pt()); |
6678cd54 | 328 | Int_t ptTrig; |
329 | if (ResType == 553) | |
8d4fefab | 330 | ptTrig = 0x20;// mask for Hpt unlike sign pair |
6678cd54 | 331 | else |
8d4fefab | 332 | ptTrig = 0x10;// mask for Lpt unlike sign pair |
6678cd54 | 333 | |
f57d136a | 334 | if (esd->GetTriggerMask() & ptTrig) NbTrigger++; |
5473f16a | 335 | if (invMass > massMin && invMass < massMax) { |
336 | EventInMass++; | |
8cde4af5 | 337 | if (muonTrack2->GetMatchTrigger() && (esd->GetTriggerMask() & ptTrig))// match with trigger |
6678cd54 | 338 | EventInMassMatch++; |
339 | ||
5473f16a | 340 | hRapResonance->Fill(fVtot.Rapidity()); |
341 | hPtResonance->Fill(fVtot.Pt()); | |
342 | } | |
343 | ||
22ccc301 | 344 | } // if (fCharge1 * fCharge2) == -1) |
a99c3449 | 345 | // } // if ((ch2 < Chi2Cut) && (pt2 > PtCutMin) && (pt2 < PtCutMax)) |
8cde4af5 | 346 | delete muonTrack2; |
5473f16a | 347 | } // for (Int_t iTrack2 = iTrack + 1; iTrack2 < iTrack; iTrack2++) |
a99c3449 | 348 | // } // if (ch1 < Chi2Cut) && (pt1 > PtCutMin)&& (pt1 < PtCutMax) ) |
8cde4af5 | 349 | delete muonTrack; |
5473f16a | 350 | } // for (Int_t iTrack = 0; iTrack < nrectracks; iTrack++) |
351 | ||
352 | hNumberOfTrack->Fill(nTracks); | |
48d6b312 | 353 | // esdFile->Delete(); |
5473f16a | 354 | } // for (Int_t iEvent = FirstEvent; |
355 | ||
ac3c5325 | 356 | // Loop over events for bg event |
357 | ||
358 | Double_t thetaPlus, phiPlus; | |
359 | Double_t thetaMinus, phiMinus; | |
360 | Float_t PtMinus, PtPlus; | |
361 | ||
362 | for (Int_t iEvent = 0; iEvent < hInvMassAll->Integral(); iEvent++) { | |
363 | ||
364 | hThetaPhiPlus->GetRandom2(phiPlus, thetaPlus); | |
365 | hThetaPhiMinus->GetRandom2(phiMinus,thetaMinus); | |
366 | PtPlus = hPtMuonPlus->GetRandom(); | |
367 | PtMinus = hPtMuonMinus->GetRandom(); | |
368 | ||
369 | fPxRec1 = PtPlus * TMath::Cos(TMath::Pi()/180.*phiPlus); | |
370 | fPyRec1 = PtPlus * TMath::Sin(TMath::Pi()/180.*phiPlus); | |
371 | fPzRec1 = PtPlus / TMath::Tan(TMath::Pi()/180.*thetaPlus); | |
372 | ||
373 | fE1 = TMath::Sqrt(muonMass * muonMass + fPxRec1 * fPxRec1 + fPyRec1 * fPyRec1 + fPzRec1 * fPzRec1); | |
374 | fV1.SetPxPyPzE(fPxRec1, fPyRec1, fPzRec1, fE1); | |
375 | ||
376 | fPxRec2 = PtMinus * TMath::Cos(TMath::Pi()/180.*phiMinus); | |
377 | fPyRec2 = PtMinus * TMath::Sin(TMath::Pi()/180.*phiMinus); | |
378 | fPzRec2 = PtMinus / TMath::Tan(TMath::Pi()/180.*thetaMinus); | |
379 | ||
380 | fE2 = TMath::Sqrt(muonMass * muonMass + fPxRec2 * fPxRec2 + fPyRec2 * fPyRec2 + fPzRec2 * fPzRec2); | |
381 | fV2.SetPxPyPzE(fPxRec2, fPyRec2, fPzRec2, fE2); | |
382 | ||
383 | // invariant mass | |
384 | fVtot = fV1 + fV2; | |
385 | ||
386 | // fill histos hInvMassAll and hInvMassRes | |
387 | hInvMassBg->Fill(fVtot.M()); | |
388 | hInvMassBgk_vs_Pt->Fill( fVtot.M(), fVtot.Pt() ); | |
389 | } | |
390 | ||
5473f16a | 391 | histoFile->Write(); |
392 | histoFile->Close(); | |
393 | ||
6678cd54 | 394 | cout << endl; |
5473f16a | 395 | cout << "EventInMass " << EventInMass << endl; |
6678cd54 | 396 | cout << "NbTrigger " << NbTrigger << endl; |
397 | cout << "EventInMass match with trigger " << EventInMassMatch << endl; | |
5473f16a | 398 | |
399 | return kTRUE; | |
400 | } | |
401 |