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Adding TOFFEE in ShuttleInput
[u/mrichter/AliRoot.git] / PWG1 / AliESDRecV0Info.cxx
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6fc428f0 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// //
20// Comparison class for V0 information //
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"
76472f75 55#include "AliMCInfo.h"
56#include "AliGenKinkInfo.h"
57#include "AliGenV0Info.h"
58
6fc428f0 59
60#include "AliESDRecV0Info.h"
61
62
63
64ClassImp(AliESDRecV0Info)
65
66
cd875161 67AliESDRecV0Info:: AliESDRecV0Info():
68 TObject(),
69 fT1(), //track1
70 fT2(), //track2
71 fDist1(0), //info about closest distance according closest MC - linear DCA
72 fDist2(0), //info about closest distance parabolic DCA
73 fInvMass(0), //reconstructed invariant mass -
74 //
75 fDistMinR(0), // distance at minimal radius
76 fRr(0), // rec position of the vertex
77 fPointAngleFi(0), //point angle fi
78 fPointAngleTh(0), //point angle theta
79 fPointAngle(0), //point angle full
80 fV0Status(0), // status of the kink
81 fV0tpc(0), // Vo information from reconsturction according TPC
82 fV0its(0), // Vo information from reconsturction according ITS
83 fV0rec(0), // V0 information form the reconstruction
84 fMultiple(0), // how man times V0 was recostructed
85 fV0Multiple(0), // how man times was V0 reconstucted
86 fRecStatus(0) // status form the reconstuction
87{
88 //
89 // default constructor
90 //
a1e6aa99 91 fV0tpc = new AliV0();
92 fV0its = new AliV0();
cd875161 93}
6fc428f0 94
95
96void AliESDRecV0Info::Update(Float_t vertex[3])
97{
98
99 if ( (fT1.fStatus[1]>0)&& (fT2.fStatus[1]>0)){
100 Float_t distance1,distance2;
101 Double_t xx[3],pp[3];
102 //
103 Double_t xd[3],pd[3],signd;
104 Double_t xm[3],pm[3],signm;
105 //
106 //
107 if (fT1.fITSOn&&fT2.fITSOn){
108 for (Int_t i=0;i<3;i++){
109 xd[i] = fT2.fITSinR1[i];
110 pd[i] = fT2.fITSinP1[i];
111 xm[i] = fT1.fITSinR1[i];
112 pm[i] = fT1.fITSinP1[i];
113 }
114 }
115 else{
116
117 for (Int_t i=0;i<3;i++){
118 xd[i] = fT2.fTPCinR1[i];
119 pd[i] = fT2.fTPCinP1[i];
120 xm[i] = fT1.fTPCinR1[i];
121 pm[i] = fT1.fTPCinP1[i];
122 }
123 }
124 //
125 //
126 signd = fT2.fSign<0 ? -1:1;
127 signm = fT1.fSign<0 ? -1:1;
128
129 AliHelix dhelix1(xd,pd,signd);
130 dhelix1.GetMomentum(0,pp,0);
131 dhelix1.Evaluate(0,xx);
132 //
133 // Double_t x2[3],p2[3];
134 //
135 AliHelix mhelix(xm,pm,signm);
136 //
137 //find intersection linear
138 //
139 Double_t phase[2][2],radius[2];
140 Int_t points = dhelix1.GetRPHIintersections(mhelix, phase, radius,200);
141 Double_t delta1=10000,delta2=10000;
142
143 if (points==1){
144 fRs[0] = TMath::Sqrt(radius[0]);
145 fRs[1] = TMath::Sqrt(radius[0]);
146 }
147 if (points==2){
148 fRs[0] =TMath::Min(TMath::Sqrt(radius[0]),TMath::Sqrt(radius[1]));
149 fRs[1] =TMath::Max(TMath::Sqrt(radius[0]),TMath::Sqrt(radius[1]));
150 }
151
152 if (points>0){
153 dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
154 dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
155 dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
156 }
157 if (points==2){
158 dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
159 dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
160 dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
161 }
162 if (points==1){
163 fRs[0] = TMath::Sqrt(radius[0]);
164 fRs[1] = TMath::Sqrt(radius[0]);
165 fDistMinR = delta1;
166 }
167 if (points==2){
168 if (radius[0]<radius[1]){
169 fRs[0] = TMath::Sqrt(radius[0]);
170 fRs[1] = TMath::Sqrt(radius[1]);
171 fDistMinR = delta1;
172 }
173 else{
174 fRs[0] = TMath::Sqrt(radius[1]);
175 fRs[1] = TMath::Sqrt(radius[0]);
176 fDistMinR = delta2;
177 }
178 }
179 //
180 //
181 distance1 = TMath::Min(delta1,delta2);
182 //
183 //find intersection parabolic
184 //
185 points = dhelix1.GetRPHIintersections(mhelix, phase, radius);
186 delta1=10000,delta2=10000;
187
188 if (points>0){
189 dhelix1.ParabolicDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
190 }
191 if (points==2){
192 dhelix1.ParabolicDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
193 }
194
195 distance2 = TMath::Min(delta1,delta2);
196 if (distance2>100) fDist2 =100;
197 return;
198 if (delta1<delta2){
199 //get V0 info
200 dhelix1.Evaluate(phase[0][0],fXr);
201 dhelix1.GetMomentum(phase[0][0],fPdr);
202 mhelix.GetMomentum(phase[0][1],fPm);
203 dhelix1.GetAngle(phase[0][0],mhelix,phase[0][1],fAngle);
204 fRr = TMath::Sqrt(radius[0]);
205 }
206 else{
207 dhelix1.Evaluate(phase[1][0],fXr);
208 dhelix1.GetMomentum(phase[1][0], fPdr);
209 mhelix.GetMomentum(phase[1][1], fPm);
210 dhelix1.GetAngle(phase[1][0],mhelix,phase[1][1],fAngle);
211 fRr = TMath::Sqrt(radius[1]);
212 }
213 fDist1 = TMath::Sqrt(distance1);
214 fDist2 = TMath::Sqrt(distance2);
215
216 if (fDist2<10.5){
217 Double_t x,alpha,param[5],cov[15];
218 //
219 fT1.GetESDtrack()->GetInnerExternalParameters(alpha,x,param);
220 fT1.GetESDtrack()->GetInnerExternalCovariance(cov);
221 AliExternalTrackParam paramm(x,alpha,param,cov);
222 //
223 fT2.GetESDtrack()->GetInnerExternalParameters(alpha,x,param);
224 fT2.GetESDtrack()->GetInnerExternalCovariance(cov);
225 AliExternalTrackParam paramd(x,alpha,param,cov);
226 }
227 //
228 //
229
230 Float_t v[3] = {fXr[0]-vertex[0],fXr[1]-vertex[1],fXr[2]-vertex[2]};
231 Float_t p[3] = {fPdr[0]+fPm[0], fPdr[1]+fPm[1],fPdr[2]+fPm[2]};
232
233 Float_t vnorm2 = v[0]*v[0]+v[1]*v[1];
234 Float_t vnorm3 = TMath::Sqrt(v[2]*v[2]+vnorm2);
235 vnorm2 = TMath::Sqrt(vnorm2);
236 Float_t pnorm2 = p[0]*p[0]+p[1]*p[1];
237 Float_t pnorm3 = TMath::Sqrt(p[2]*p[2]+pnorm2);
238 pnorm2 = TMath::Sqrt(pnorm2);
239
240 fPointAngleFi = (v[0]*p[0]+v[1]*p[1])/(vnorm2*pnorm2);
241 fPointAngleTh = (v[2]*p[2]+vnorm2*pnorm2)/(vnorm3*pnorm3);
242 fPointAngle = (v[0]*p[0]+v[1]*p[1]+v[2]*p[2])/(vnorm3*pnorm3);
243 }
244}
245