STARLIGHT code and interface

[u/mrichter/AliRoot.git] / STARLIGHT / starlight / include / .svn / text-base / gammagammasingle.h.svn-base

diff --git a/STARLIGHT/starlight/include/.svn/text-base/gammagammasingle.h.svn-base b/STARLIGHT/starlight/include/.svn/text-base/gammagammasingle.h.svn-base
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+///////////////////////////////////////////////////////////////////////////
+//
+//    Copyright 2010
+//
+//    This file is part of starlight.
+//
+//    starlight is free software: you can redistribute it and/or modify
+//    it under the terms of the GNU General Public License as published by
+//    the Free Software Foundation, either version 3 of the License, or
+//    (at your option) any later version.
+//
+//    starlight is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+//    GNU General Public License for more details.
+//
+//    You should have received a copy of the GNU General Public License
+//    along with starlight. If not, see <http://www.gnu.org/licenses/>.
+//
+///////////////////////////////////////////////////////////////////////////
+//
+// File and Version Information:
+// $Rev::                             $: revision of last commit
+// $Author::                          $: author of last commit
+// $Date::                            $: date of last commit
+//
+// Description:
+//
+//
+//
+///////////////////////////////////////////////////////////////////////////
+
+
+#ifndef GAMMAGAMMASINGLE_H
+#define GAMMAGAMMASINGLE_H
+
+
+#include <vector>
+
+#include "starlightconstants.h"
+#include "readinluminosity.h"
+#include "beambeamsystem.h"
+#include "randomgenerator.h"
+#include "eventchannel.h"
+#include "starlightconfig.h"
+#ifdef ENABLE_PYTHIA
+#include "pythiadecayer.h"
+#endif
+
+class Gammagammasingle : public eventChannel
+{
+ public:
+  Gammagammasingle(beamBeamSystem& bbsystem);
+  ~Gammagammasingle();
+  
+  void singleCrossSection();
+  starlightConstants::event produceEvent(int &ievent);
+
+  upcEvent produceEvent();
+
+ private:
+  double _sigmax[starlightLimits::MAXWBINS][starlightLimits::MAXYBINS];//=new double[500][500];   //decreased from 1000*1000; too big! causes fault!
+  double _sigmaSum;
+  double _wdelta;  //Added 7/26/07 for passing sigmadelta to pickw
+  double _remainwd;// "
+  int _ivalwd;     // "
+  
+  void pickw(double &w);
+  void picky(double &y);
+  
+  void parentMomentum(double w,double y,double &E,double &px,double &py,double&pz);
+  double pp(double E);
+  void twoBodyDecay(starlightConstants::particleTypeEnum &ipid,double E,double W,double px0,double py0,double pz0,double &px1,double &py1,double&pz1,double &px2,double &py2,/*double &py2,*/double &pz2,int &iFbadevent);
+  // void transform(double betax,double betay,double betaz,double &E,double &px,double &py,double &pz,int &iFbadevent);
+  void thephi(double W,double px,double py,double pz,double E,double &theta,double &phi);
+  
+  double getMass();
+  double getWidth();
+  double getSpin();
+  
+  starlightConstants::particleTypeEnum _GGsingInputpidtest;
+  int _GGsingInputnumw;
+  int _GGsingInputnumy;
+  double _GGsingInputGamma_em;
+#ifdef ENABLE_PYTHIA 
+  pythiaDecayer _pyDecayer;
+#endif
+  
+};
+
+
+#endif  // GAMMAGAMMASINGLE_H