PWG2/FEMTOSCOPY/AliFemto/Infrastructure/AliFemtoKink.cxx

   1 /***********************************************************************
   2  *
   3  * $Id$
   4  *
   5  * Author: Mike Lisa, Ohio State, 23May2001
   6  *
   7  ***********************************************************************
   8  *
   9  * Description: Kink class with information gotten from the StKinkVertex
  10  *              of Wenshen Deng and Spiros Margetis
  11  *
  12  ***********************************************************************
  13  *
  14  * $Log$
  15  * Revision 1.3  2007/04/27 07:24:34  akisiel
  16  * Make revisions needed for compilation from the main AliRoot tree
  17  *
  18  * Revision 1.1.1.1  2007/04/25 15:38:41  panos
  19  * Importing the HBT code dir
  20  *
  21  * Revision 1.1.1.1  2007/03/07 10:14:49  mchojnacki
  22  * First version on CVS
  23  *
  24  * Revision 1.4  2001/11/14 21:07:21  lisa
  25  * Fixed several small things (mostly discarded const) that caused fatal errors with gcc2.95.3
  26  *
  27  * Revision 1.3  2001/09/05 21:55:23  laue
  28  * typo fixed
  29  *
  30  * Revision 1.2  2001/06/21 19:15:46  laue
  31  * Modified fiels:
  32  *   CTH.h : new constructor added
  33  *   AliFemtoEvent, AliFemtoKink, AliFemtoTrack : constructors from the persistent
  34  *                                   (TTree) classes added
  35  *   AliFemtoLikeSignAnalysis : minor changes, for debugging
  36  *   AliFemtoTypes: split into different files
  37  * Added files: for the new TTree muDst's
  38  *   StExceptions.cxx StExceptions.h AliFemtoEnumeration.h
  39  *   AliFemtoHelix.h AliFemtoHisto.h AliFemtoString.h AliFemtoTFile.h
  40  *   AliFemtoTTreeEvent.cxx AliFemtoTTreeEvent.h AliFemtoTTreeKink.cxx
  41  *   AliFemtoTTreeKink.h AliFemtoTTreeTrack.cxx AliFemtoTTreeTrack.h
  42  *   AliFemtoTTreeV0.cxx AliFemtoTTreeV0.h AliFemtoVector.h
  43  *
  44  * Revision 1.1  2001/05/25 23:23:59  lisa
  45  * Added in AliFemtoKink stuff
  46  *
  47  *
  48  *
  49  ***********************************************************************/
  50
  51 #include "AliFemtoKink.h"
  52 #include "Infrastructure/phys_constants.h"
  53 #include "Infrastructure/AliFemtoTrack.h"
  54 // -----------------------------------------------------------------------
  55 AliFemtoKink::AliFemtoKink():
  56   fDcaParentDaughter(0), fDcaDaughterPrimaryVertex(0),
  57   fDcaParentPrimaryVertex(0), fHitDistanceParentDaughter(0),
  58   fHitDistanceParentVertex(0),
  59   fDecayAngle(0), fDecayAngleCM(0),
  60   fDaughter(),
  61   mParent(),
  62   mPosition(0,0,0)
  63 {/* no-op */}
  64 // -----------------------------------------------------------------------
  65 AliFemtoKink::AliFemtoKink(const AliFemtoKink& k):
  66   fDcaParentDaughter(0), fDcaDaughterPrimaryVertex(0),
  67   fDcaParentPrimaryVertex(0), fHitDistanceParentDaughter(0),
  68   fHitDistanceParentVertex(0),
  69   fDecayAngle(0), fDecayAngleCM(0),
  70   fDaughter(),
  71   mParent(),
  72   mPosition(0,0,0)
  73 { // copy constructor
  74
  75   fDcaParentDaughter          =   k.fDcaParentDaughter;
  76   fDcaDaughterPrimaryVertex   =   k.fDcaDaughterPrimaryVertex;
  77   fDcaParentPrimaryVertex     =   k.fDcaParentPrimaryVertex;
  78   fHitDistanceParentDaughter  =   k.fHitDistanceParentDaughter;
  79   fHitDistanceParentVertex    =   k.fHitDistanceParentVertex;
  80   fDeltaEnergy[0]             =   k.fDeltaEnergy[0];
  81   fDeltaEnergy[1]             =   k.fDeltaEnergy[1];
  82   fDeltaEnergy[2]             =   k.fDeltaEnergy[2];
  83   fDecayAngle                 =   k.fDecayAngle;
  84   fDecayAngleCM               =   k.fDecayAngleCM;
  85   fDaughter                   =   k.fDaughter;
  86   mParent                     =   k.mParent;
  87   mPosition                   =   k.mPosition;
  88
  89 }
  90 // -----------------------------------------------------------------------
  91
  92
  93 //--------------------- below here is ONLY star ----------------
  94 #ifndef __NO_STAR_DEPENDENCE_ALLOWED__
  95 #ifdef __ROOT__
  96 #include "StEvent/StTrack.h"
  97 #include "StEvent/StKinkVertex.h"
  98 AliFemtoKink::AliFemtoKink( const StKinkVertex& SKV, AliFemtoThreeVector PrimaryVertex )
  99 {
 100
 101   fDcaParentDaughter          = SKV.dcaParentDaughter();
 102   fDcaDaughterPrimaryVertex   = SKV.dcaDaughterPrimaryVertex();
 103   fDcaParentPrimaryVertex     = SKV.dcaParentPrimaryVertex();
 104   fHitDistanceParentDaughter  = SKV.hitDistanceParentDaughter();
 105   fHitDistanceParentVertex    = SKV.hitDistanceParentVertex();
 106   fDeltaEnergy[0]             = SKV.dE(0);
 107   fDeltaEnergy[1]             = SKV.dE(1);
 108   fDeltaEnergy[2]             = SKV.dE(2);
 109   fDecayAngle                 = SKV.decayAngle();
 110   fDecayAngleCM               = SKV.decayAngleCM();
 111
 112   // now fill member AliFemtoTrack data...
 113   const StTrack* StTrk;
 114   AliFemtoTrack* HbtTrk;
 115   // Daughter
 116   StTrk = SKV.daughter(0);
 117   HbtTrk = new AliFemtoTrack(StTrk,PrimaryVertex); // generate NEW HbtTrack from StTrack
 118   fDaughter = *HbtTrk;                         // invoke copy ctr of AliFemtoTrack
 119   delete HbtTrk;                               // get rid of the NEW HbtTrack - we are done with that
 120   // Parent
 121   StTrk = SKV.parent();
 122   HbtTrk = new AliFemtoTrack(StTrk,PrimaryVertex); // generate NEW HbtTrack from StTrack
 123   mParent = *HbtTrk;                           // invoke copy ctr of AliFemtoTrack
 124   delete HbtTrk;                               // get rid of the NEW HbtTrack - we are done with that
 125
 126   // finally, the kink position
 127   mPosition.setX(SKV.position().x());
 128   mPosition.setY(SKV.position().y());
 129   mPosition.setZ(SKV.position().z());
 130
 131 }
 132
 133 // mike removed all AliFemtoTTree stuff 21apr2006
 134
 135 #endif // __ROOT__
 136 #endif  // __NO_STAR_DEPENDENCE_ALLOWED__