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7cc34f08 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, 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 | ||
17 | /////////////////////////////////////////////////////////////////////////////// | |
18 | // // | |
19 | // Time Projection Chamber // | |
20 | // Comparison macro for reconstructed tracks - ESDs V0s // | |
21 | // responsible: | |
22 | // marian.ivanov@cern.ch // | |
23 | // | |
24 | // | |
25 | ||
26 | ||
27 | ||
28 | ||
29 | ||
30 | #include <stdio.h> | |
31 | #include <string.h> | |
32 | //ROOT includes | |
33 | #include "Rtypes.h" | |
34 | // | |
35 | //ALIROOT includes | |
36 | // | |
37 | #include "AliESDtrack.h" | |
38 | #include "AliTPCParam.h" | |
39 | #include "AliTrackReference.h" | |
40 | #include "AliTPCParamSR.h" | |
41 | #include "AliESD.h" | |
42 | #include "AliESDfriend.h" | |
43 | #include "AliESDtrack.h" | |
44 | #include "AliTPCseed.h" | |
45 | #include "AliITStrackMI.h" | |
46 | #include "AliTRDtrack.h" | |
47 | #include "AliHelix.h" | |
48 | #include "AliESDVertex.h" | |
49 | #include "AliExternalTrackParam.h" | |
50 | #include "AliESDkink.h" | |
51 | #include "AliESDv0.h" | |
52 | #include "AliV0.h" | |
53 | // | |
54 | #include "AliTreeDraw.h" | |
55 | #include "AliMCInfo.h" | |
56 | #include "AliGenKinkInfo.h" | |
57 | #include "AliGenV0Info.h" | |
58 | #include "AliESDRecKinkInfo.h" | |
59 | ||
60 | ||
61 | ||
62 | ClassImp(AliESDRecKinkInfo) | |
63 | ||
64 | ||
65 | ||
66 | AliESDRecKinkInfo::AliESDRecKinkInfo(): | |
67 | fT1(), //track1 | |
68 | fT2(), //track2 | |
69 | fKink(), //kink | |
70 | fDist1(0), //info about closest distance according closest MC - linear DCA | |
71 | fDist2(0), //info about closest distance parabolic DCA | |
72 | fInvMass(0), //reconstructed invariant mass - | |
73 | // | |
74 | fRr(0), // rec position of the vertex | |
75 | fMinR(0), // minimum radius in rphi intersection | |
76 | fDistMinR(0), // distance at minimal radius | |
77 | fPointAngleFi(0), //point angle fi | |
78 | fPointAngleTh(0), //point angle theta | |
79 | fPointAngle(0), //point angle full | |
80 | fStatus(0), //status -tracks | |
81 | fRecStatus(0), //kink -status- 0 - not found 1-good - fake | |
82 | fMultiple(0), // how many times was kink reconstructed | |
83 | fKinkMultiple(0) // how many times was kink reconstructed | |
84 | { | |
85 | // | |
86 | // Default constructor | |
87 | // | |
88 | } | |
89 | ||
90 | //// | |
91 | void AliESDRecKinkInfo::Update() | |
92 | { | |
93 | ||
94 | if ( (fT1.fTPCOn)&& (fT2.fTPCOn)){ | |
95 | // | |
96 | // IF BOTH RECONSTRUCTED | |
97 | Float_t distance1,distance2; | |
98 | Double_t xx[3],pp[3]; | |
99 | // | |
100 | Double_t xd[3],pd[3],signd; | |
101 | Double_t xm[3],pm[3],signm; | |
102 | for (Int_t i=0;i<3;i++){ | |
103 | xd[i] = fT2.fTPCinR1[i]; | |
104 | pd[i] = fT2.fTPCinP1[i]; | |
105 | xm[i] = fT1.fTPCinR1[i]; | |
106 | pm[i] = fT1.fTPCinP1[i]; | |
107 | } | |
108 | signd = fT2.fSign<0 ? -1:1; | |
109 | signm = fT1.fSign<0 ? -1:1; | |
110 | ||
111 | AliHelix dhelix1(xd,pd,signd); | |
112 | dhelix1.GetMomentum(0,pp,0); | |
113 | dhelix1.Evaluate(0,xx); | |
114 | // | |
115 | // Double_t x2[3],p2[3]; | |
116 | // | |
117 | AliHelix mhelix(xm,pm,signm); | |
118 | // | |
119 | //find intersection linear | |
120 | // | |
121 | Double_t phase[2][2],radius[2]; | |
122 | Int_t points = dhelix1.GetRPHIintersections(mhelix, phase, radius,200); | |
123 | Double_t delta1=10000,delta2=10000; | |
124 | ||
125 | if (points==1){ | |
126 | fMinR = TMath::Sqrt(radius[0]); | |
127 | } | |
128 | if (points==2){ | |
129 | fMinR =TMath::Min(TMath::Sqrt(radius[0]),TMath::Sqrt(radius[1])); | |
130 | } | |
131 | ||
132 | if (points>0){ | |
133 | dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1); | |
134 | dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1); | |
135 | dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1); | |
136 | } | |
137 | if (points==2){ | |
138 | dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2); | |
139 | dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2); | |
140 | dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2); | |
141 | } | |
142 | if (points==1){ | |
143 | fMinR = TMath::Sqrt(radius[0]); | |
144 | fDistMinR = delta1; | |
145 | } | |
146 | if (points==2){ | |
147 | if (radius[0]<radius[1]){ | |
148 | fMinR = TMath::Sqrt(radius[0]); | |
149 | fDistMinR = delta1; | |
150 | } | |
151 | else{ | |
152 | fMinR = TMath::Sqrt(radius[1]); | |
153 | fDistMinR = delta2; | |
154 | } | |
155 | } | |
156 | // | |
157 | // | |
158 | distance1 = TMath::Min(delta1,delta2); | |
159 | // | |
160 | //find intersection parabolic | |
161 | // | |
162 | points = dhelix1.GetRPHIintersections(mhelix, phase, radius); | |
163 | delta1=10000,delta2=10000; | |
164 | ||
165 | if (points>0){ | |
166 | dhelix1.ParabolicDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1); | |
167 | } | |
168 | if (points==2){ | |
169 | dhelix1.ParabolicDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2); | |
170 | } | |
171 | ||
172 | distance2 = TMath::Min(delta1,delta2); | |
173 | if (delta1<delta2){ | |
174 | //get V0 info | |
175 | dhelix1.Evaluate(phase[0][0],fXr); | |
176 | dhelix1.GetMomentum(phase[0][0],fPdr); | |
177 | mhelix.GetMomentum(phase[0][1],fPm); | |
178 | dhelix1.GetAngle(phase[0][0],mhelix,phase[0][1],fAngle); | |
179 | fRr = TMath::Sqrt(radius[0]); | |
180 | } | |
181 | else{ | |
182 | dhelix1.Evaluate(phase[1][0],fXr); | |
183 | dhelix1.GetMomentum(phase[1][0], fPdr); | |
184 | mhelix.GetMomentum(phase[1][1], fPm); | |
185 | dhelix1.GetAngle(phase[1][0],mhelix,phase[1][1],fAngle); | |
186 | fRr = TMath::Sqrt(radius[1]); | |
187 | } | |
188 | fDist1 = TMath::Sqrt(distance1); | |
189 | fDist2 = TMath::Sqrt(distance2); | |
190 | ||
191 | if (fDist2<10.5){ | |
192 | Double_t x,alpha,param[5],cov[15]; | |
193 | // | |
194 | fT1.GetESDtrack()->GetInnerExternalParameters(alpha,x,param); | |
195 | fT1.GetESDtrack()->GetInnerExternalCovariance(cov); | |
196 | AliExternalTrackParam paramm(x,alpha,param,cov); | |
197 | // | |
198 | fT2.GetESDtrack()->GetInnerExternalParameters(alpha,x,param); | |
199 | fT2.GetESDtrack()->GetInnerExternalCovariance(cov); | |
200 | AliExternalTrackParam paramd(x,alpha,param,cov); | |
201 | /* | |
202 | AliESDkink kink; | |
203 | kink.Update(¶mm,¶md); | |
204 | // kink.Dump(); | |
205 | Double_t diff = kink.fRr-fRr; | |
206 | Double_t diff2 = kink.fDist2-fDist2; | |
207 | printf("Diff\t%f\t%f\n",diff,diff2); | |
208 | */ | |
209 | } | |
210 | ||
211 | // | |
212 | // | |
213 | } | |
214 | ||
215 | } | |
216 |