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a65a7e70 | 1 | /************************************************************************* |
2 | * Copyright(c) 1998-2011, 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 | ||
16 | #include <TObjArray.h> | |
17 | #include <TClonesArray.h> | |
18 | #include <TGraph.h> | |
19 | #include <TFile.h> | |
20 | #include <TList.h> | |
21 | #include <TNtuple.h> | |
22 | ||
23 | #include "AliVertex.h" | |
24 | #include "AliVVertex.h" | |
25 | #include "AliESDVertex.h" | |
26 | #include "AliVertexerTracks.h" | |
27 | #include "AliAODEvent.h" | |
28 | #include "AliAODTrack.h" | |
29 | #include "AliAODMCParticle.h" | |
30 | #include "AliExternalTrackParam.h" | |
31 | #include "AliAODRecoDecayHF2Prong.h" | |
32 | #include "AliAODRecoDecayHF3Prong.h" | |
33 | #include "AliAODRecoCascadeHF.h" | |
34 | #include "AliNeutralTrackParam.h" | |
35 | #include "AliAnalysisTaskSEImproveITS.h" | |
36 | ||
37 | // | |
38 | // Implementation of the "hybrid-approach" for ITS upgrade studies. | |
39 | // The tastk smears the track parameters according to estimations | |
40 | // from single-track upgrade studies. Afterwards it recalculates | |
41 | // the parameters of the reconstructed decays. | |
42 | // | |
43 | // WARNING: This will affect all tasks in a train after this one | |
44 | // (which is typically desired, though). | |
45 | // | |
46 | ||
47 | AliAnalysisTaskSEImproveITS::AliAnalysisTaskSEImproveITS() | |
48 | :AliAnalysisTaskSE(), | |
49 | fD0ZResPCur (0), | |
50 | fD0ZResKCur (0), | |
51 | fD0ZResPiCur (0), | |
52 | fD0RPResPCur (0), | |
53 | fD0RPResKCur (0), | |
54 | fD0RPResPiCur(0), | |
55 | fPt1ResPCur (0), | |
56 | fPt1ResKCur (0), | |
57 | fPt1ResPiCur (0), | |
58 | fD0ZResPUpg (0), | |
59 | fD0ZResKUpg (0), | |
60 | fD0ZResPiUpg (0), | |
61 | fD0RPResPUpg (0), | |
62 | fD0RPResKUpg (0), | |
63 | fD0RPResPiUpg(0), | |
64 | fPt1ResPUpg (0), | |
65 | fPt1ResKUpg (0), | |
66 | fPt1ResPiUpg (0), | |
67 | fD0ZResPCurSA (0), | |
68 | fD0ZResKCurSA (0), | |
69 | fD0ZResPiCurSA (0), | |
70 | fD0RPResPCurSA (0), | |
71 | fD0RPResKCurSA (0), | |
72 | fD0RPResPiCurSA(0), | |
73 | fPt1ResPCurSA (0), | |
74 | fPt1ResKCurSA (0), | |
75 | fPt1ResPiCurSA (0), | |
76 | fD0ZResPUpgSA (0), | |
77 | fD0ZResKUpgSA (0), | |
78 | fD0ZResPiUpgSA (0), | |
79 | fD0RPResPUpgSA (0), | |
80 | fD0RPResKUpgSA (0), | |
81 | fD0RPResPiUpgSA(0), | |
82 | fPt1ResPUpgSA (0), | |
83 | fPt1ResKUpgSA (0), | |
84 | fPt1ResPiUpgSA (0), | |
85 | fRunInVertexing(kFALSE), | |
86 | fImproveTracks(kTRUE), | |
87 | fDebugOutput (0), | |
88 | fDebugNtuple (0), | |
89 | fDebugVars (0), | |
90 | fNDebug (0) | |
91 | { | |
92 | // | |
93 | // Default constructor. | |
94 | // | |
95 | } | |
96 | ||
97 | AliAnalysisTaskSEImproveITS::AliAnalysisTaskSEImproveITS(const char *name, | |
98 | const char *resfileCurURI, | |
99 | const char *resfileUpgURI, | |
100 | Bool_t isRunInVertexing, | |
101 | Int_t ndebug) | |
102 | :AliAnalysisTaskSE(name), | |
103 | fD0ZResPCur (0), | |
104 | fD0ZResKCur (0), | |
105 | fD0ZResPiCur (0), | |
106 | fD0RPResPCur (0), | |
107 | fD0RPResKCur (0), | |
108 | fD0RPResPiCur(0), | |
109 | fPt1ResPCur (0), | |
110 | fPt1ResKCur (0), | |
111 | fPt1ResPiCur (0), | |
112 | fD0ZResPUpg (0), | |
113 | fD0ZResKUpg (0), | |
114 | fD0ZResPiUpg (0), | |
115 | fD0RPResPUpg (0), | |
116 | fD0RPResKUpg (0), | |
117 | fD0RPResPiUpg(0), | |
118 | fPt1ResPUpg (0), | |
119 | fPt1ResKUpg (0), | |
120 | fPt1ResPiUpg (0), | |
121 | fD0ZResPCurSA (0), | |
122 | fD0ZResKCurSA (0), | |
123 | fD0ZResPiCurSA (0), | |
124 | fD0RPResPCurSA (0), | |
125 | fD0RPResKCurSA (0), | |
126 | fD0RPResPiCurSA(0), | |
127 | fPt1ResPCurSA (0), | |
128 | fPt1ResKCurSA (0), | |
129 | fPt1ResPiCurSA (0), | |
130 | fD0ZResPUpgSA (0), | |
131 | fD0ZResKUpgSA (0), | |
132 | fD0ZResPiUpgSA (0), | |
133 | fD0RPResPUpgSA (0), | |
134 | fD0RPResKUpgSA (0), | |
135 | fD0RPResPiUpgSA(0), | |
136 | fPt1ResPUpgSA (0), | |
137 | fPt1ResKUpgSA (0), | |
138 | fPt1ResPiUpgSA (0), | |
139 | fRunInVertexing(isRunInVertexing), | |
140 | fImproveTracks(kTRUE), | |
141 | fDebugOutput (0), | |
142 | fDebugNtuple (0), | |
143 | fDebugVars (0), | |
144 | fNDebug (ndebug) | |
145 | { | |
146 | // | |
147 | // Constructor to be used to create the task. | |
148 | // The the URIs specify the resolution files to be used. | |
149 | // They are expected to contain TGraphs with the resolutions | |
150 | // for the current and the upgraded ITS (see code for details). | |
151 | // One may also specify for how many tracks debug information | |
152 | // is written to the output. | |
153 | // | |
154 | TFile *resfileCur=TFile::Open(resfileCurURI); | |
155 | fD0RPResPCur =new TGraph(*static_cast<TGraph*>(resfileCur->Get("D0RPResP" ))); | |
156 | fD0RPResKCur =new TGraph(*static_cast<TGraph*>(resfileCur->Get("D0RPResK" ))); | |
157 | fD0RPResPiCur=new TGraph(*static_cast<TGraph*>(resfileCur->Get("D0RPResPi"))); | |
158 | fD0ZResPCur =new TGraph(*static_cast<TGraph*>(resfileCur->Get("D0ZResP" ))); | |
159 | fD0ZResKCur =new TGraph(*static_cast<TGraph*>(resfileCur->Get("D0ZResK" ))); | |
160 | fD0ZResPiCur =new TGraph(*static_cast<TGraph*>(resfileCur->Get("D0ZResPi" ))); | |
161 | fPt1ResPCur =new TGraph(*static_cast<TGraph*>(resfileCur->Get("Pt1ResP" ))); | |
162 | fPt1ResKCur =new TGraph(*static_cast<TGraph*>(resfileCur->Get("Pt1ResK" ))); | |
163 | fPt1ResPiCur =new TGraph(*static_cast<TGraph*>(resfileCur->Get("Pt1ResPi" ))); | |
164 | fD0RPResPCur ->SetName("D0RPResPCur" ); | |
165 | fD0RPResKCur ->SetName("D0RPResKCur" ); | |
166 | fD0RPResPiCur->SetName("D0RPResPiCur"); | |
167 | fD0ZResPCur ->SetName("D0ZResPCur" ); | |
168 | fD0ZResKCur ->SetName("D0ZResKCur" ); | |
169 | fD0ZResPiCur ->SetName("D0ZResPiCur" ); | |
170 | fPt1ResPCur ->SetName("Pt1ResPCur" ); | |
171 | fPt1ResKCur ->SetName("Pt1ResKCur" ); | |
172 | fPt1ResPiCur ->SetName("Pt1ResPiCur" ); | |
173 | fD0RPResPCurSA =new TGraph(*static_cast<TGraph*>(resfileCur->Get("D0RPResPSA" ))); | |
174 | fD0RPResKCurSA =new TGraph(*static_cast<TGraph*>(resfileCur->Get("D0RPResKSA" ))); | |
175 | fD0RPResPiCurSA=new TGraph(*static_cast<TGraph*>(resfileCur->Get("D0RPResPiSA"))); | |
176 | fD0ZResPCurSA =new TGraph(*static_cast<TGraph*>(resfileCur->Get("D0ZResPSA" ))); | |
177 | fD0ZResKCurSA =new TGraph(*static_cast<TGraph*>(resfileCur->Get("D0ZResKSA" ))); | |
178 | fD0ZResPiCurSA =new TGraph(*static_cast<TGraph*>(resfileCur->Get("D0ZResPiSA" ))); | |
179 | fPt1ResPCurSA =new TGraph(*static_cast<TGraph*>(resfileCur->Get("Pt1ResPSA" ))); | |
180 | fPt1ResKCurSA =new TGraph(*static_cast<TGraph*>(resfileCur->Get("Pt1ResKSA" ))); | |
181 | fPt1ResPiCurSA =new TGraph(*static_cast<TGraph*>(resfileCur->Get("Pt1ResPiSA" ))); | |
182 | fD0RPResPCurSA ->SetName("D0RPResPCurSA" ); | |
183 | fD0RPResKCurSA ->SetName("D0RPResKCurSA" ); | |
184 | fD0RPResPiCurSA->SetName("D0RPResPiCurSA"); | |
185 | fD0ZResPCurSA ->SetName("D0ZResPCurSA" ); | |
186 | fD0ZResKCurSA ->SetName("D0ZResKCurSA" ); | |
187 | fD0ZResPiCurSA ->SetName("D0ZResPiCurSA" ); | |
188 | fPt1ResPCurSA ->SetName("Pt1ResPCurSA" ); | |
189 | fPt1ResKCurSA ->SetName("Pt1ResKCurSA" ); | |
190 | fPt1ResPiCurSA ->SetName("Pt1ResPiCurSA" ); | |
191 | delete resfileCur; | |
192 | TFile *resfileUpg=TFile::Open(resfileUpgURI ); | |
193 | fD0RPResPUpg =new TGraph(*static_cast<TGraph*>(resfileUpg->Get("D0RPResP" ))); | |
194 | fD0RPResKUpg =new TGraph(*static_cast<TGraph*>(resfileUpg->Get("D0RPResK" ))); | |
195 | fD0RPResPiUpg=new TGraph(*static_cast<TGraph*>(resfileUpg->Get("D0RPResPi"))); | |
196 | fD0ZResPUpg =new TGraph(*static_cast<TGraph*>(resfileUpg->Get("D0ZResP" ))); | |
197 | fD0ZResKUpg =new TGraph(*static_cast<TGraph*>(resfileUpg->Get("D0ZResK" ))); | |
198 | fD0ZResPiUpg =new TGraph(*static_cast<TGraph*>(resfileUpg->Get("D0ZResPi" ))); | |
199 | fPt1ResPUpg =new TGraph(*static_cast<TGraph*>(resfileUpg->Get("Pt1ResP" ))); | |
200 | fPt1ResKUpg =new TGraph(*static_cast<TGraph*>(resfileUpg->Get("Pt1ResK" ))); | |
201 | fPt1ResPiUpg =new TGraph(*static_cast<TGraph*>(resfileUpg->Get("Pt1ResPi" ))); | |
202 | fD0RPResPUpg ->SetName("D0RPResPUpg" ); | |
203 | fD0RPResKUpg ->SetName("D0RPResKUpg" ); | |
204 | fD0RPResPiUpg->SetName("D0RPResPiUpg"); | |
205 | fD0ZResPUpg ->SetName("D0ZResPUpg" ); | |
206 | fD0ZResKUpg ->SetName("D0ZResKUpg" ); | |
207 | fD0ZResPiUpg ->SetName("D0ZResPiUpg" ); | |
208 | fPt1ResPUpg ->SetName("Pt1ResPUpg" ); | |
209 | fPt1ResKUpg ->SetName("Pt1ResKUpg" ); | |
210 | fPt1ResPiUpg ->SetName("Pt1ResPiUpg" ); | |
211 | fD0RPResPUpgSA =new TGraph(*static_cast<TGraph*>(resfileUpg->Get("D0RPResPSA" ))); | |
212 | fD0RPResKUpgSA =new TGraph(*static_cast<TGraph*>(resfileUpg->Get("D0RPResKSA" ))); | |
213 | fD0RPResPiUpgSA=new TGraph(*static_cast<TGraph*>(resfileUpg->Get("D0RPResPiSA"))); | |
214 | fD0ZResPUpgSA =new TGraph(*static_cast<TGraph*>(resfileUpg->Get("D0ZResPSA" ))); | |
215 | fD0ZResKUpgSA =new TGraph(*static_cast<TGraph*>(resfileUpg->Get("D0ZResKSA" ))); | |
216 | fD0ZResPiUpgSA =new TGraph(*static_cast<TGraph*>(resfileUpg->Get("D0ZResPiSA" ))); | |
217 | fPt1ResPUpgSA =new TGraph(*static_cast<TGraph*>(resfileUpg->Get("Pt1ResPSA" ))); | |
218 | fPt1ResKUpgSA =new TGraph(*static_cast<TGraph*>(resfileUpg->Get("Pt1ResKSA" ))); | |
219 | fPt1ResPiUpgSA =new TGraph(*static_cast<TGraph*>(resfileUpg->Get("Pt1ResPiSA" ))); | |
220 | fD0RPResPUpgSA ->SetName("D0RPResPUpgSA" ); | |
221 | fD0RPResKUpgSA ->SetName("D0RPResKUpgSA" ); | |
222 | fD0RPResPiUpgSA->SetName("D0RPResPiUpgSA"); | |
223 | fD0ZResPUpgSA ->SetName("D0ZResPUpgSA" ); | |
224 | fD0ZResKUpgSA ->SetName("D0ZResKUpgSA" ); | |
225 | fD0ZResPiUpgSA ->SetName("D0ZResPiUpgSA" ); | |
226 | fPt1ResPUpgSA ->SetName("Pt1ResPUpgSA" ); | |
227 | fPt1ResKUpgSA ->SetName("Pt1ResKUpgSA" ); | |
228 | fPt1ResPiUpgSA ->SetName("Pt1ResPiUpgSA" ); | |
229 | delete resfileUpg; | |
230 | ||
231 | DefineOutput(1,TNtuple::Class()); | |
232 | } | |
233 | ||
234 | AliAnalysisTaskSEImproveITS::~AliAnalysisTaskSEImproveITS() { | |
235 | // | |
236 | // Destructor. | |
237 | // | |
238 | delete fDebugOutput; | |
239 | } | |
240 | ||
241 | void AliAnalysisTaskSEImproveITS::UserCreateOutputObjects() { | |
242 | // | |
243 | // Creation of user output objects. | |
244 | // | |
245 | fDebugOutput=new TList(); | |
246 | fDebugOutput->SetOwner(); | |
247 | fDebugNtuple=new TNtuple("fDebugNtuple","Smearing","pdg:ptmc:d0rpo:d0zo:pt1o:sd0rpo:sd0zo:spt1o:d0rpn:d0zn:pt1n:sd0rpn:sd0zn:spt1n:d0rpmc:d0zmc:pt1mc"); | |
248 | fDebugVars=new Float_t[fDebugNtuple->GetNvar()]; | |
249 | ||
250 | fDebugOutput->Add(fDebugNtuple ); | |
251 | ||
252 | fDebugOutput->Add(fD0RPResPCur ); | |
253 | fDebugOutput->Add(fD0RPResKCur ); | |
254 | fDebugOutput->Add(fD0RPResPiCur); | |
255 | fDebugOutput->Add(fD0ZResPCur ); | |
256 | fDebugOutput->Add(fD0ZResKCur ); | |
257 | fDebugOutput->Add(fD0ZResPiCur ); | |
258 | fDebugOutput->Add(fPt1ResPCur ); | |
259 | fDebugOutput->Add(fPt1ResKCur ); | |
260 | fDebugOutput->Add(fPt1ResPiCur ); | |
261 | fDebugOutput->Add(fD0RPResPUpg ); | |
262 | fDebugOutput->Add(fD0RPResKUpg ); | |
263 | fDebugOutput->Add(fD0RPResPiUpg); | |
264 | fDebugOutput->Add(fD0ZResPUpg ); | |
265 | fDebugOutput->Add(fD0ZResKUpg ); | |
266 | fDebugOutput->Add(fD0ZResPiUpg ); | |
267 | fDebugOutput->Add(fPt1ResPUpg ); | |
268 | fDebugOutput->Add(fPt1ResKUpg ); | |
269 | fDebugOutput->Add(fPt1ResPiUpg ); | |
270 | ||
271 | PostData(1,fDebugOutput); | |
272 | } | |
273 | ||
274 | void AliAnalysisTaskSEImproveITS::UserExec(Option_t*) { | |
275 | // | |
276 | // The event loop | |
277 | // | |
278 | AliAODEvent *ev=0x0; | |
279 | if(!fRunInVertexing) { | |
280 | ev=dynamic_cast<AliAODEvent*>(InputEvent()); | |
281 | } else { | |
282 | if(AODEvent() && IsStandardAOD()) ev = dynamic_cast<AliAODEvent*> (AODEvent()); | |
283 | } | |
284 | if(!ev) return; | |
285 | Double_t bz=ev->GetMagneticField(); | |
286 | ||
287 | ||
288 | ||
289 | ||
290 | // Smear all tracks | |
291 | TClonesArray *mcs=static_cast<TClonesArray*>(ev->GetList()->FindObject(AliAODMCParticle::StdBranchName())); | |
292 | if (!mcs) return; | |
293 | if (fImproveTracks) { | |
294 | for(Int_t itrack=0;itrack<ev->GetNumberOfTracks();++itrack) { | |
295 | SmearTrack(ev->GetTrack(itrack),mcs); | |
296 | } | |
297 | } | |
298 | ||
299 | // TODO: recalculated primary vertex | |
300 | AliVVertex *primaryVertex=ev->GetPrimaryVertex(); | |
301 | ||
302 | // Recalculate all candidates | |
303 | // D0->Kpi | |
304 | TClonesArray *array2Prong=static_cast<TClonesArray*>(ev->GetList()->FindObject("D0toKpi")); | |
305 | if (array2Prong) { | |
306 | for (Int_t icand=0;icand<array2Prong->GetEntries();++icand) { | |
307 | AliAODRecoDecayHF2Prong *decay=static_cast<AliAODRecoDecayHF2Prong*>(array2Prong->At(icand)); | |
308 | ||
309 | // recalculate vertices | |
310 | AliVVertex *oldSecondaryVertex=decay->GetSecondaryVtx(); | |
311 | ||
312 | ||
313 | AliExternalTrackParam et1; et1.CopyFromVTrack(static_cast<AliAODTrack*>(decay->GetDaughter(0))); | |
314 | AliExternalTrackParam et2; et2.CopyFromVTrack(static_cast<AliAODTrack*>(decay->GetDaughter(1))); | |
315 | ||
316 | TObjArray ta12; | |
317 | ||
318 | ta12.Add(&et1); ta12.Add(&et2); | |
319 | AliESDVertex *v12 =RecalculateVertex(oldSecondaryVertex,&ta12 ,bz); | |
320 | ||
321 | ||
322 | // update secondary vertex | |
323 | Double_t pos[3]; | |
324 | v12->GetXYZ(pos); | |
325 | ||
326 | decay->GetSecondaryVtx()->SetPosition(pos[0],pos[1],pos[2]); | |
327 | decay->GetSecondaryVtx()->SetChi2perNDF(v12->GetChi2toNDF()); | |
328 | ||
329 | //!!!!TODO: covariance matrix | |
330 | ||
331 | // update d0 | |
332 | Double_t d0z0[2],covd0z0[3]; | |
333 | Double_t d0[2],d0err[2]; | |
334 | et1.PropagateToDCA(primaryVertex,bz,100.,d0z0,covd0z0); | |
335 | d0[0]=d0z0[0]; | |
336 | d0err[0] = TMath::Sqrt(covd0z0[0]); | |
337 | et2.PropagateToDCA(primaryVertex,bz,100.,d0z0,covd0z0); | |
338 | d0[1]=d0z0[0]; | |
339 | d0err[1] = TMath::Sqrt(covd0z0[0]); | |
340 | decay->Setd0Prongs(2,d0); | |
341 | decay->Setd0errProngs(2,d0err); | |
342 | // | |
343 | ||
344 | ||
345 | Double_t xdummy=0.,ydummy=0.; | |
346 | Double_t dca; | |
347 | dca=et1.GetDCA(&et2,bz,xdummy,ydummy); | |
348 | decay->SetDCA(dca); | |
349 | ||
350 | ||
351 | delete v12; | |
352 | ||
353 | Double_t px[2],py[2],pz[2]; | |
354 | for (Int_t i=0;i<2;++i) { | |
355 | const AliAODTrack *t=static_cast<AliAODTrack*>(decay->GetDaughter(i)); | |
356 | px[i]=t->Px(); | |
357 | py[i]=t->Py(); | |
358 | pz[i]=t->Pz(); | |
359 | } | |
360 | decay->SetPxPyPzProngs(2,px,py,pz); | |
361 | } | |
362 | } | |
363 | ||
364 | ||
365 | // Dstar->Kpipi | |
366 | TClonesArray *arrayCascade=static_cast<TClonesArray*>(ev->GetList()->FindObject("Dstar")); | |
367 | ||
368 | if (arrayCascade) { | |
369 | for (Int_t icand=0;icand<arrayCascade->GetEntries();++icand) { | |
370 | AliAODRecoCascadeHF *decayDstar=static_cast<AliAODRecoCascadeHF*>(arrayCascade->At(icand)); | |
371 | //Get D0 from D* | |
372 | AliAODRecoDecayHF2Prong* decay=(AliAODRecoDecayHF2Prong*)decayDstar->Get2Prong(); | |
373 | ||
374 | // recalculate vertices | |
375 | //AliVVertex *oldSecondaryVertex=decay->GetSecondaryVtx(); | |
376 | ||
377 | //soft pion | |
378 | AliExternalTrackParam et3; et3.CopyFromVTrack(static_cast<AliAODTrack*>(decayDstar->GetBachelor())); | |
379 | ||
380 | //track D0 | |
381 | AliNeutralTrackParam *trackD0 = new AliNeutralTrackParam(decay); | |
382 | ||
383 | //!!!!TODO: covariance matrix | |
384 | ||
385 | // update d0 | |
386 | Double_t d0z0[2],covd0z0[3]; | |
387 | Double_t d01[2],d01err[2]; | |
388 | ||
389 | //the D* | |
390 | et3.PropagateToDCA(primaryVertex,bz,100.,d0z0,covd0z0); | |
391 | d01[0]=d0z0[0]; | |
392 | d01err[0] = TMath::Sqrt(covd0z0[0]); | |
393 | trackD0->PropagateToDCA(primaryVertex,bz,100.,d0z0,covd0z0); | |
394 | d01[1]=d0z0[0]; | |
395 | d01err[1] = TMath::Sqrt(covd0z0[0]); | |
396 | decayDstar->Setd0Prongs(2,d01); | |
397 | decayDstar->Setd0errProngs(2,d01err); | |
398 | ||
399 | // delete v12; | |
400 | delete trackD0; trackD0=NULL; | |
401 | ||
402 | // a run for D* | |
403 | Double_t px1[2],py1[2],pz1[2]; | |
404 | for (Int_t i=0;i<2;++i) { | |
405 | const AliAODTrack *t1=static_cast<AliAODTrack*>(decayDstar->GetDaughter(i)); | |
406 | px1[i]=t1->Px(); | |
407 | py1[i]=t1->Py(); | |
408 | pz1[i]=t1->Pz(); | |
409 | } | |
410 | decayDstar->SetPxPyPzProngs(2,px1,py1,pz1); | |
411 | ||
412 | } | |
413 | } | |
414 | ||
415 | ||
416 | // Three prong | |
417 | TClonesArray *array3Prong=static_cast<TClonesArray*>(ev->GetList()->FindObject("Charm3Prong")); | |
418 | if (array3Prong) { | |
419 | for (Int_t icand=0;icand<array3Prong->GetEntries();++icand) { | |
420 | AliAODRecoDecayHF3Prong *decay=static_cast<AliAODRecoDecayHF3Prong*>(array3Prong->At(icand)); | |
421 | ||
422 | // recalculate vertices | |
423 | AliVVertex *oldSecondaryVertex=decay->GetSecondaryVtx(); | |
424 | AliExternalTrackParam et1; et1.CopyFromVTrack(static_cast<AliAODTrack*>(decay->GetDaughter(0))); | |
425 | AliExternalTrackParam et2; et2.CopyFromVTrack(static_cast<AliAODTrack*>(decay->GetDaughter(1))); | |
426 | AliExternalTrackParam et3; et3.CopyFromVTrack(static_cast<AliAODTrack*>(decay->GetDaughter(2))); | |
427 | TObjArray ta123,ta12,ta23; | |
428 | ta123.Add(&et1);ta123.Add(&et2);ta123.Add(&et3); | |
429 | ta12. Add(&et1);ta12 .Add(&et2); | |
430 | ta23 .Add(&et2);ta23 .Add(&et3); | |
431 | AliESDVertex *v123=RecalculateVertex(oldSecondaryVertex,&ta123,bz); | |
432 | AliESDVertex *v12 =RecalculateVertex(oldSecondaryVertex,&ta12 ,bz); | |
433 | AliESDVertex *v23 =RecalculateVertex(oldSecondaryVertex,&ta23 ,bz); | |
434 | ||
435 | // update secondary vertex | |
436 | Double_t pos[3]; | |
437 | v123->GetXYZ(pos); | |
438 | decay->GetSecondaryVtx()->SetPosition(pos[0],pos[1],pos[2]); | |
439 | decay->GetSecondaryVtx()->SetChi2perNDF(v123->GetChi2toNDF()); | |
440 | //TODO: covariance matrix | |
441 | ||
442 | // update d0 for all progs | |
443 | Double_t d0z0[2],covd0z0[3]; | |
444 | Double_t d0[3],d0err[3]; | |
445 | et1.PropagateToDCA(primaryVertex,bz,100.,d0z0,covd0z0); | |
446 | d0[0]=d0z0[0]; | |
447 | d0err[0] = TMath::Sqrt(covd0z0[0]); | |
448 | et2.PropagateToDCA(primaryVertex,bz,100.,d0z0,covd0z0); | |
449 | d0[1]=d0z0[0]; | |
450 | d0err[1] = TMath::Sqrt(covd0z0[0]); | |
451 | et3.PropagateToDCA(primaryVertex,bz,100.,d0z0,covd0z0); | |
452 | d0[2]=d0z0[0]; | |
453 | d0err[2] = TMath::Sqrt(covd0z0[0]); | |
454 | decay->Setd0Prongs (3,d0 ); | |
455 | decay->Setd0errProngs(3,d0err); | |
456 | // TODO: setter missing | |
457 | ||
458 | // update dca for prong combinations | |
459 | Double_t xdummy=0.,ydummy=0.; | |
460 | Double_t dca[3]; | |
461 | dca[0]=et1.GetDCA(&et2,bz,xdummy,ydummy); | |
462 | dca[1]=et3.GetDCA(&et2,bz,xdummy,ydummy); | |
463 | dca[2]=et1.GetDCA(&et3,bz,xdummy,ydummy); | |
464 | decay->SetDCAs(3,dca); | |
465 | ||
466 | // update dist12 and dist23 | |
467 | primaryVertex->GetXYZ(pos); | |
468 | decay->SetDist12toPrim(TMath::Sqrt((v12->GetX()-pos[0])*(v12->GetX()-pos[0]) | |
469 | +(v12->GetY()-pos[1])*(v12->GetY()-pos[1]) | |
470 | +(v12->GetZ()-pos[2])*(v12->GetZ()-pos[2]))); | |
471 | decay->SetDist23toPrim(TMath::Sqrt((v23->GetX()-pos[0])*(v23->GetX()-pos[0]) | |
472 | +(v23->GetY()-pos[1])*(v23->GetY()-pos[1]) | |
473 | +(v23->GetZ()-pos[2])*(v23->GetZ()-pos[2]))); | |
474 | ||
475 | delete v123;delete v12;delete v23; | |
476 | ||
477 | Double_t px[3],py[3],pz[3]; | |
478 | for (Int_t i=0;i<3;++i) { | |
479 | const AliAODTrack *t=static_cast<AliAODTrack*>(decay->GetDaughter(i)); | |
480 | px[i]=t->Px(); | |
481 | py[i]=t->Py(); | |
482 | pz[i]=t->Pz(); | |
483 | } | |
484 | decay->SetPxPyPzProngs(3,px,py,pz); | |
485 | } | |
486 | } | |
487 | } | |
488 | ||
489 | void AliAnalysisTaskSEImproveITS::SmearTrack(AliAODTrack *track,const TClonesArray *mcs) { | |
490 | // Early exit, if this track has nothing in common with the ITS | |
491 | ||
492 | if (!(track->HasPointOnITSLayer(0) || track->HasPointOnITSLayer(1))) | |
493 | return; | |
494 | ||
495 | // Check if the track was already "improved" (this is done with a trick using layer 7 (ie the 8th)) | |
496 | if (TESTBIT(track->GetITSClusterMap(),7)) return; | |
497 | // | |
498 | ||
499 | ||
500 | // Get reconstructed track parameters | |
501 | AliExternalTrackParam et; et.CopyFromVTrack(track); | |
502 | Double_t *param=const_cast<Double_t*>(et.GetParameter()); | |
503 | //TODO: Double_t *covar=const_cast<Double_t*>(et.GetCovariance()); | |
504 | ||
505 | // Get MC info | |
506 | Int_t imc=track->GetLabel(); | |
507 | if (imc<=0) return; | |
508 | const AliAODMCParticle *mc=static_cast<AliAODMCParticle*>(mcs->At(imc)); | |
509 | Double_t mcx[3]; | |
510 | Double_t mcp[3]; | |
511 | Double_t mccv[36]={0.}; | |
512 | Short_t mcc; | |
513 | mc->XvYvZv(mcx); | |
514 | mc->PxPyPz(mcp); | |
515 | mcc=mc->Charge(); | |
516 | AliExternalTrackParam mct(mcx,mcp,mccv,mcc); | |
517 | const Double_t *parammc=mct.GetParameter(); | |
518 | //TODO: const Double_t *covermc=mct.GetCovariance(); | |
519 | AliVertex vtx(mcx,1.,1); | |
520 | ||
521 | // Correct reference points and frames according to MC | |
522 | // TODO: B-Field correct? | |
523 | // TODO: failing propagation.... | |
524 | et.PropagateToDCA(&vtx,track->GetBz(),10.); | |
525 | et.Rotate(mct.GetAlpha()); | |
526 | ||
527 | // Select appropriate smearing functions | |
528 | Double_t ptmc=TMath::Abs(mc->Pt()); | |
529 | Double_t sd0rpn=0.; | |
530 | Double_t sd0zn =0.; | |
531 | Double_t spt1n =0.; | |
532 | Double_t sd0rpo=0.; | |
533 | Double_t sd0zo =0.; | |
534 | Double_t spt1o =0.; | |
535 | switch (mc->GetPdgCode()) { | |
536 | case 2212: case -2212: | |
537 | sd0rpo=EvalGraph(ptmc,fD0RPResPCur,fD0RPResPCurSA); | |
538 | sd0zo =EvalGraph(ptmc,fD0ZResPCur,fD0ZResPCurSA); | |
539 | spt1o =EvalGraph(ptmc,fPt1ResPCur,fPt1ResPCurSA); | |
540 | sd0rpn=EvalGraph(ptmc,fD0RPResPUpg,fD0RPResPUpgSA); | |
541 | sd0zn =EvalGraph(ptmc,fD0ZResPUpg,fD0ZResPUpgSA); | |
542 | spt1n =EvalGraph(ptmc,fPt1ResPUpg,fPt1ResPUpgSA); | |
543 | break; | |
544 | case 321: case -321: | |
545 | sd0rpo=EvalGraph(ptmc,fD0RPResKCur,fD0RPResKCurSA); | |
546 | sd0zo =EvalGraph(ptmc,fD0ZResKCur,fD0ZResKCurSA); | |
547 | spt1o =EvalGraph(ptmc,fPt1ResKCur,fPt1ResKCurSA); | |
548 | sd0rpn=EvalGraph(ptmc,fD0RPResKUpg,fD0RPResKUpgSA); | |
549 | sd0zn =EvalGraph(ptmc,fD0ZResKUpg,fD0ZResKUpgSA); | |
550 | spt1n =EvalGraph(ptmc,fPt1ResKUpg,fPt1ResKUpgSA); | |
551 | break; | |
552 | case 211: case -211: | |
553 | sd0rpo=EvalGraph(ptmc,fD0RPResPiCur,fD0RPResPiCurSA); | |
554 | sd0zo =EvalGraph(ptmc,fD0ZResPiCur,fD0ZResPiCurSA); | |
555 | spt1o =EvalGraph(ptmc,fPt1ResPiCur,fPt1ResPiCurSA); | |
556 | sd0rpn=EvalGraph(ptmc,fD0RPResPiUpg,fD0RPResPiUpgSA); | |
557 | sd0zn =EvalGraph(ptmc,fD0ZResPiUpg,fD0ZResPiUpgSA); | |
558 | spt1n =EvalGraph(ptmc,fPt1ResPiUpg,fPt1ResPiUpgSA); | |
559 | break; | |
560 | default: | |
561 | return; | |
562 | } | |
563 | ||
564 | // Use the same units (i.e. cm and GeV/c)! TODO: pt! | |
565 | sd0rpo*=1.e-4; | |
566 | sd0zo *=1.e-4; | |
567 | sd0rpn*=1.e-4; | |
568 | sd0zn *=1.e-4; | |
569 | ||
570 | // Apply the smearing | |
571 | Double_t d0zo =param [1]; | |
572 | Double_t d0zmc =parammc[1]; | |
573 | Double_t d0rpo =param [0]; | |
574 | Double_t d0rpmc=parammc[0]; | |
575 | Double_t pt1o =param [4]; | |
576 | Double_t pt1mc =parammc[4]; | |
577 | Double_t dd0zo =d0zo-d0zmc; | |
578 | Double_t dd0zn =dd0zo *(sd0zo >0. ? (sd0zn /sd0zo ) : 1.); | |
579 | Double_t d0zn =d0zmc+dd0zn; | |
580 | Double_t dd0rpo=d0rpo-d0rpmc; | |
581 | Double_t dd0rpn=dd0rpo*(sd0rpo>0. ? (sd0rpn/sd0rpo) : 1.); | |
582 | Double_t d0rpn =d0rpmc+dd0rpn; | |
583 | Double_t dpt1o =pt1o-pt1mc; | |
584 | Double_t dpt1n =dpt1o *(spt1o >0. ? (spt1n /spt1o ) : 1.); | |
585 | Double_t pt1n =pt1mc+dpt1n; | |
586 | param[0]=d0rpn; | |
587 | param[1]=d0zn ; | |
588 | param[4]=pt1n ; | |
589 | ||
590 | // Copy the smeared parameters to the AOD track | |
591 | Double_t x[3]; | |
592 | Double_t p[3]; | |
593 | et.GetXYZ(x); | |
594 | et.GetPxPyPz(p); | |
595 | track->SetPosition(x,kFALSE); | |
596 | track->SetP(p,kTRUE); | |
597 | ||
598 | ||
599 | // Mark the track as "improved" with a trick (this is done with a trick using layer 7 (ie the 8th)) | |
600 | UChar_t itsClusterMap = track->GetITSClusterMap(); | |
601 | SETBIT(itsClusterMap,7); | |
602 | track->SetITSClusterMap(itsClusterMap); | |
603 | // | |
604 | ||
605 | // write out debug infos | |
606 | if (fDebugNtuple->GetEntries()<fNDebug) { | |
607 | Int_t idbg=0; | |
608 | fDebugVars[idbg++]=mc->GetPdgCode(); | |
609 | fDebugVars[idbg++]=ptmc ; | |
610 | fDebugVars[idbg++]=d0rpo ; | |
611 | fDebugVars[idbg++]=d0zo ; | |
612 | fDebugVars[idbg++]=pt1o ; | |
613 | fDebugVars[idbg++]=sd0rpo; | |
614 | fDebugVars[idbg++]=sd0zo ; | |
615 | fDebugVars[idbg++]=spt1o ; | |
616 | fDebugVars[idbg++]=d0rpn ; | |
617 | fDebugVars[idbg++]=d0zn ; | |
618 | fDebugVars[idbg++]=pt1n ; | |
619 | fDebugVars[idbg++]=sd0rpn; | |
620 | fDebugVars[idbg++]=sd0zn ; | |
621 | fDebugVars[idbg++]=spt1n ; | |
622 | fDebugVars[idbg++]=d0rpmc; | |
623 | fDebugVars[idbg++]=d0zmc ; | |
624 | fDebugVars[idbg++]=pt1mc ; | |
625 | fDebugNtuple->Fill(fDebugVars); | |
626 | PostData(1,fDebugOutput); | |
627 | } | |
628 | } | |
629 | ||
630 | AliESDVertex* AliAnalysisTaskSEImproveITS::RecalculateVertex(const AliVVertex *old,TObjArray *tracks,Double_t bField) { | |
631 | // | |
632 | // Helper function to recalculate a vertex. | |
633 | // | |
634 | ||
635 | static UShort_t ids[]={1,2,3}; //TODO: unsave... | |
636 | AliVertexerTracks vertexer(bField); | |
637 | vertexer.SetVtxStart(old->GetX(),old->GetY(),old->GetZ()); | |
638 | AliESDVertex *vertex=vertexer.VertexForSelectedTracks(tracks,ids); | |
639 | return vertex; | |
640 | } | |
641 | ||
642 | Double_t AliAnalysisTaskSEImproveITS::EvalGraph(Double_t x,const TGraph *graph,const TGraph *graphSA) const { | |
643 | // | |
644 | // Evaluates a TGraph without linear extrapolation. Instead the last | |
645 | // valid point of the graph is used when out of range. | |
646 | // The function assumes an ascending order of X. | |
647 | // | |
648 | ||
649 | // TODO: find a pretty solution for this: | |
650 | Int_t n =graph->GetN(); | |
651 | Double_t xmin=graph->GetX()[0 ]; | |
652 | Double_t xmax=graph->GetX()[n-1]; | |
653 | if (x<xmin) { | |
654 | if(!graphSA) return graph->Eval(xmin); | |
655 | Double_t xminSA=graphSA->GetX()[0]; | |
656 | if(x<xminSA) return graphSA->Eval(xminSA); | |
657 | return graphSA->Eval(x); | |
658 | } | |
659 | if (x>xmax) return graph->Eval(xmax); | |
660 | return graph->Eval(x); | |
661 | } | |
662 | ||
663 | ClassImp(AliAnalysisTaskSEImproveITS); | |
664 |