+++ /dev/null
-/**************************************************************************
- * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
- * *
- * Author: The ALICE Off-line Project. *
- * Contributors are mentioned in the code where appropriate. *
- * *
- * Permission to use, copy, modify and distribute this software and its *
- * documentation strictly for non-commercial purposes is hereby granted *
- * without fee, provided that the above copyright notice appears in all *
- * copies and that both the copyright notice and this permission notice *
- * appear in the supporting documentation. The authors make no claims *
- * about the suitability of this software for any purpose. It is *
- * provided "as is" without express or implied warranty. *
- **************************************************************************/
-
-
-///////////////////////////////////////////////////////////////////////////////
-// //
-// //
-// Comparison class for V0 information //
-// responsible:
-// marian.ivanov@cern.ch //
-//
-//
-
-
-
-
-
-#include <stdio.h>
-#include <string.h>
-//ROOT includes
-#include "Rtypes.h"
-//
-//ALIROOT includes
-//
-#include "AliESDtrack.h"
-#include "AliTPCParam.h"
-#include "AliTrackReference.h"
-#include "AliTPCParamSR.h"
-#include "AliESD.h"
-#include "AliESDfriend.h"
-#include "AliESDtrack.h"
-#include "AliTPCseed.h"
-#include "AliITStrackMI.h"
-#include "AliHelix.h"
-#include "AliESDVertex.h"
-#include "AliExternalTrackParam.h"
-#include "AliESDkink.h"
-#include "AliESDv0.h"
-#include "AliV0.h"
-#include "AliKFParticle.h"
-#include "AliKFVertex.h"
-//
-#include "AliTreeDraw.h"
-#include "AliMCInfo.h"
-#include "AliGenKinkInfo.h"
-#include "AliGenV0Info.h"
-
-
-#include "AliESDRecV0Info.h"
-
-
-
-ClassImp(AliESDRecV0Info)
-
-
-AliESDRecV0Info:: AliESDRecV0Info():
- TObject(),
- fT1(), //track1
- fT2(), //track2
- fDist1(0), //info about closest distance according closest MC - linear DCA
- fDist2(0), //info about closest distance parabolic DCA
- fInvMass(0), //reconstructed invariant mass -
- //
- fDistMinR(0), // distance at minimal radius
- fRr(0), // rec position of the vertex
- fPointAngleFi(0), //point angle fi
- fPointAngleTh(0), //point angle theta
- fPointAngle(0), //point angle full
- fV0Status(0), // status of the kink
- fV0tpc(0), // Vo information from reconsturction according TPC
- fV0its(0), // Vo information from reconsturction according ITS
- fV0rec(0), // V0 information form the reconstruction
- fV0recOff(0), // V0 information form the reconstruction - OFFLINE
- fMultiple(0), // how man times V0 was recostructed
- fRecStatus(0), // status form the reconstuction
- fV0MultipleOn(0), // how man times was V0 reconstucted
- fV0MultipleOff(0), // how man times was V0 reconstucted
- //
- fKFrecChi2NC(0), // ONLINE V0 finder non constrained chi2
- fKFrecChi2C(0), // ONLINE V0 finder constrained chi2 - prim vertex
- fKFrecChi2CM(0), // ONLINE V0 finder constrained chi2 - prim vertex+mass
- fKFRecNC(0), // non constrained
- fKFRecC(0), // constrained vertex
- fKFRecCM(0), // constrained vertex+mass
- fKFrecOffChi2NC(0), // OFFLINE V0 finder - non constrained chi2
- fKFrecOffChi2C(0), // OFFLINE V0 finder - constrained chi2 - prim vertex
- fKFrecOffChi2CM(0), // OFFLINE V0 finder - constrained chi2 - prim vertex+mass
- fKFOffRecNC(0), // non constrained
- fKFOffRecC(0), // constrained vertex
- fKFOffRecCM(0) // constrained vertex+mass
-{
- //
- // default constructor
- //
- for (Int_t i=0; i<3; i++) {
- fPdr[i] = 0;
- fXr[i] = 0;
- fPm[i] = 0;
- fAngle[i] = 0;
- }
- for (Int_t i=0; i<2; i++) {
- fRs[i] = 0;
- fLab[i] = 0;
- }
-
- fV0tpc = new AliV0();
- fV0its = new AliV0();
- fV0rec = new AliV0();
- fV0recOff = new AliV0();
-}
-
-
-void AliESDRecV0Info::Update(Float_t vertex[3])
-{
-
- if ( (fT1.fStatus[1]>0)&& (fT2.fStatus[1]>0)){
- Float_t distance1,distance2;
- Double_t xx[3],pp[3];
- //
- Double_t xd[3],pd[3],signd;
- Double_t xm[3],pm[3],signm;
- //
- //
- if (fT1.fITSOn&&fT2.fITSOn){
- for (Int_t i=0;i<3;i++){
- xd[i] = fT2.fITSinR1[i];
- pd[i] = fT2.fITSinP1[i];
- xm[i] = fT1.fITSinR1[i];
- pm[i] = fT1.fITSinP1[i];
- }
- }
- else{
-
- for (Int_t i=0;i<3;i++){
- xd[i] = fT2.fTPCinR1[i];
- pd[i] = fT2.fTPCinP1[i];
- xm[i] = fT1.fTPCinR1[i];
- pm[i] = fT1.fTPCinP1[i];
- }
- }
- //
- //
- signd = fT2.fSign<0 ? -1:1;
- signm = fT1.fSign<0 ? -1:1;
-
- AliHelix dhelix1(xd,pd,signd);
- dhelix1.GetMomentum(0,pp,0);
- dhelix1.Evaluate(0,xx);
- //
- // Double_t x2[3],p2[3];
- //
- AliHelix mhelix(xm,pm,signm);
- //
- //find intersection linear
- //
- Double_t phase[2][2] = { {0,0},{0,0} };
- Double_t radius[2] = {0};
- Int_t points = dhelix1.GetRPHIintersections(mhelix, phase, radius,200);
- Double_t delta1=10000,delta2=10000;
-
- if (points==1){
- fRs[0] = TMath::Sqrt(radius[0]);
- fRs[1] = TMath::Sqrt(radius[0]);
- }
- if (points==2){
- fRs[0] =TMath::Min(TMath::Sqrt(radius[0]),TMath::Sqrt(radius[1]));
- fRs[1] =TMath::Max(TMath::Sqrt(radius[0]),TMath::Sqrt(radius[1]));
- }
-
- if (points>0){
- dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
- dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
- dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
- }
- if (points==2){
- dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
- dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
- dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
- }
- if (points==1){
- fRs[0] = TMath::Sqrt(radius[0]);
- fRs[1] = TMath::Sqrt(radius[0]);
- fDistMinR = delta1;
- }
- if (points==2){
- if (radius[0]<radius[1]){
- fRs[0] = TMath::Sqrt(radius[0]);
- fRs[1] = TMath::Sqrt(radius[1]);
- fDistMinR = delta1;
- }
- else{
- fRs[0] = TMath::Sqrt(radius[1]);
- fRs[1] = TMath::Sqrt(radius[0]);
- fDistMinR = delta2;
- }
- }
- //
- //
- distance1 = TMath::Min(delta1,delta2);
- //
- //find intersection parabolic
- //
- points = dhelix1.GetRPHIintersections(mhelix, phase, radius);
- delta1=10000,delta2=10000;
-
- if (points>0){
- dhelix1.ParabolicDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
- }
- if (points==2){
- dhelix1.ParabolicDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
- }
-
- distance2 = TMath::Min(delta1,delta2);
- if (distance2>100) fDist2 =100;
- Bool_t checkAll = 0; // to be checked
- if(checkAll) {
- if (delta1<delta2){
- //get V0 info
- dhelix1.Evaluate(phase[0][0],fXr);
- dhelix1.GetMomentum(phase[0][0],fPdr);
- mhelix.GetMomentum(phase[0][1],fPm);
- dhelix1.GetAngle(phase[0][0],mhelix,phase[0][1],fAngle);
- fRr = TMath::Sqrt(radius[0]);
- }
- else{
- dhelix1.Evaluate(phase[1][0],fXr);
- dhelix1.GetMomentum(phase[1][0], fPdr);
- mhelix.GetMomentum(phase[1][1], fPm);
- dhelix1.GetAngle(phase[1][0],mhelix,phase[1][1],fAngle);
- fRr = TMath::Sqrt(radius[1]);
- }
- fDist1 = TMath::Sqrt(distance1);
- fDist2 = TMath::Sqrt(distance2);
-
- if (fDist2<10.5){
- Double_t x,alpha,param[5],cov[15];
- //
- fT1.GetESDtrack()->GetInnerExternalParameters(alpha,x,param);
- fT1.GetESDtrack()->GetInnerExternalCovariance(cov);
- AliExternalTrackParam paramm(x,alpha,param,cov);
- //
- fT2.GetESDtrack()->GetInnerExternalParameters(alpha,x,param);
- fT2.GetESDtrack()->GetInnerExternalCovariance(cov);
- AliExternalTrackParam paramd(x,alpha,param,cov);
- }
- //
- //
-
- Float_t v[3] = {static_cast<Float_t>(fXr[0]-vertex[0]),static_cast<Float_t>(fXr[1]-vertex[1]),static_cast<Float_t>(fXr[2]-vertex[2])};
- Float_t p[3] = {static_cast<Float_t>(fPdr[0]+fPm[0]), static_cast<Float_t>(fPdr[1]+fPm[1]),static_cast<Float_t>(fPdr[2]+fPm[2])};
-
- Float_t vnorm2 = v[0]*v[0]+v[1]*v[1];
- Float_t vnorm3 = TMath::Sqrt(v[2]*v[2]+vnorm2);
- vnorm2 = TMath::Sqrt(vnorm2);
- Float_t pnorm2 = p[0]*p[0]+p[1]*p[1];
- Float_t pnorm3 = TMath::Sqrt(p[2]*p[2]+pnorm2);
- pnorm2 = TMath::Sqrt(pnorm2);
-
- fPointAngleFi = (v[0]*p[0]+v[1]*p[1])/(vnorm2*pnorm2);
- fPointAngleTh = (v[2]*p[2]+vnorm2*pnorm2)/(vnorm3*pnorm3);
- fPointAngle = (v[0]*p[0]+v[1]*p[1]+v[2]*p[2])/(vnorm3*pnorm3);
- }
- }
-}
-
-
-void AliESDRecV0Info::Reset(){
- //
- // Reset status and all counters
- //
- fDist1=-1; //info about closest distance according closest MC - linear DCA
- fDist2=-1; //info about closest distance parabolic DCA
- fInvMass=-1; //reconstructed invariant mass -
- //
- fDistMinR=-1; // distance at minimal radius
- fRr=-1; // rec position of the vertex
- fLab[0]=-20; //MC label of the partecle
- fLab[1]=-10; //MC label of the partecle
- fPointAngleFi=0; //point angle fi
- fPointAngleTh=0; //point angle theta
- fPointAngle=0; //point angle full
- //
- fV0Status= -100; // status of the V0
- fMultiple=0; // how man times V0 was recostructed
- fRecStatus=0; // status form the reconstuction - 1 reconstructed - -1 fake
- fV0MultipleOn=0; // how man times was V0 reconstucted - onfly
- fV0MultipleOff=0; // how man times was V0 reconstucted - offline
- //
- // AliKF variables - variables to make a selection + resoluton study
- //
- fKFrecChi2NC=0; // ONLINE V0 finder non constrained chi2
- fKFrecChi2C=0; // ONLINE V0 finder constrained chi2 - prim vertex
- fKFrecChi2CM=0; // ONLINE V0 finder constrained chi2 - prim vertex+mass
- //
- fKFrecOffChi2NC=0; // OFFLINE V0 finder - non constrained chi2
- fKFrecOffChi2C=0; // OFFLINE V0 finder - constrained chi2 - prim vertex
- fKFrecOffChi2CM=0; // OFFLINE V0 finder - constrained chi2 - prim vertex+mass
-}
-
-
-
-void AliESDRecV0Info::UpdateKF(const AliESDVertex &vertex, Int_t pdg0, Int_t pdg1, Float_t mass){
- //
- // Calculate properties of V0 vertex using different type of constraints
- //
- fKFrecChi2NC=0; // ONLINE V0 finder non constrained chi2
- fKFrecChi2C=0; // ONLINE V0 finder constrained chi2 - prim vertex
- fKFrecChi2CM=0; // ONLINE V0 finder constrained chi2 - prim vertex+mass
- if (fKFRecNC) {delete fKFRecNC; fKFRecNC=0;}
- if (fKFRecC) {delete fKFRecC; fKFRecC=0;}
- if (fKFRecCM) {delete fKFRecCM; fKFRecCM=0;}
- //
- fKFrecOffChi2NC=0; // OFFLINE V0 finder - non constrained chi2
- fKFrecOffChi2C=0; // OFFLINE V0 finder - constrained chi2 - prim vertex
- fKFrecOffChi2CM=0; // OFFLINE V0 finder - constrained chi2 - prim vertex+mass
- if (fKFOffRecNC) {delete fKFOffRecNC; fKFOffRecNC=0;}
- if (fKFOffRecC) {delete fKFOffRecC; fKFOffRecC=0;}
- if (fKFOffRecCM) {delete fKFOffRecCM; fKFOffRecCM=0;}
- if (fV0Status==0) return; //
- //
- AliKFVertex primVtx(vertex);
- //
- if (fV0rec &&
- TMath::Abs(fV0rec->GetParamN()->GetSigmaY2())>0.000000001&&
- TMath::Abs(fV0rec->GetParamP()->GetSigmaY2())>0.000000001
- ){
- //
- Double_t x, y, z;
- AliKFParticle p1( *(fV0rec->GetParamN()), pdg0 );
- AliKFParticle p2( *(fV0rec->GetParamP()), pdg1 );
- //
- fKFRecNC = new AliKFParticle;
- fV0rec->GetXYZ(x,y,z);
- fKFRecNC->SetVtxGuess(x,y,z);
- *(fKFRecNC)+=p1;
- *(fKFRecNC)+=p2;
- fKFrecChi2NC =fKFRecNC->GetChi2() ;
- //
- fKFRecC = new AliKFParticle;
- fV0rec->GetXYZ(x,y,z);
- fKFRecC->SetVtxGuess(x,y,z);
- *(fKFRecC)+=p1;
- *(fKFRecC)+=p2;
- fKFRecC->SetProductionVertex(primVtx);
- fKFrecChi2C =fKFRecC->GetChi2();
- //
- fKFRecCM = new AliKFParticle;
- fV0rec->GetXYZ(x,y,z);
- fKFRecCM->SetVtxGuess(x,y,z);
- *(fKFRecCM)+=p1;
- *(fKFRecCM)+=p2;
- fKFRecCM->SetProductionVertex(primVtx);
- fKFRecCM->SetMassConstraint(mass);
- fKFrecChi2CM =fKFRecCM->GetChi2();
- }
-
- if (fV0recOff &&
- TMath::Abs(fV0recOff->GetParamN()->GetSigmaY2())>0.000000001&&
- TMath::Abs(fV0recOff->GetParamP()->GetSigmaY2())>0.000000001
- ){
- //
- Double_t x, y, z;
- AliKFParticle p1( *(fV0recOff->GetParamN()), pdg0 );
- AliKFParticle p2( *(fV0recOff->GetParamP()), pdg1 );
- //
- fKFOffRecNC = new AliKFParticle;
- fV0recOff->GetXYZ(x,y,z);
- fKFOffRecNC->SetVtxGuess(x,y,z);
- *(fKFOffRecNC)+=p1;
- *(fKFOffRecNC)+=p2;
- fKFrecOffChi2NC =fKFOffRecNC->GetChi2() ;
- //
- fKFOffRecC = new AliKFParticle;
- fV0recOff->GetXYZ(x,y,z);
- fKFOffRecC->SetVtxGuess(x,y,z);
- *(fKFOffRecC)+=p1;
- *(fKFOffRecC)+=p2;
- fKFOffRecC->SetProductionVertex(primVtx);
- fKFrecOffChi2C =fKFOffRecC->GetChi2();
- //
- fKFOffRecCM = new AliKFParticle;
- fV0recOff->GetXYZ(x,y,z);
- fKFOffRecCM->SetVtxGuess(x,y,z);
- *(fKFOffRecCM)+=p1;
- *(fKFOffRecCM)+=p2;
- fKFOffRecCM->SetProductionVertex(primVtx);
- fKFOffRecCM->SetMassConstraint(mass);
- fKFrecOffChi2CM =fKFOffRecCM->GetChi2();
- }
-
-
-}
-
-
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff