AliDecayer realisation for the EvtGen code and EvtGen itself.

[u/mrichter/AliRoot.git] / TEvtGen / EvtGenModels / EvtPythia.hh

diff --git a/TEvtGen/EvtGenModels/EvtPythia.hh b/TEvtGen/EvtGenModels/EvtPythia.hh
new file mode 100644 (file)
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+++ b/TEvtGen/EvtGenModels/EvtPythia.hh
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+//--------------------------------------------------------------------------
+//
+// Environment:
+//      This software is part of the EvtGen package developed jointly
+//      for the BaBar and CLEO collaborations.  If you use all or part
+//      of it, please give an appropriate acknowledgement.
+//
+// Copyright Information: See BelEvtGen/COPYRIGHT
+//      Copyright (C) 1998      Caltech, UCSB
+//
+// Module: BelEvtGen/EvtJetSet.hh
+//
+// Description:
+//
+// Modification history:
+//
+//    DJL/RYD     August 11, 1998         Module created
+//    RS          October 28, 2002        copied from JETSET module
+//
+//------------------------------------------------------------------------
+
+#ifndef EVTPYTHIA_HH
+#define EVTPYTHIA_HH
+
+#include "EvtGenBase/EvtDecayIncoherent.hh"
+#include "EvtGenBase/EvtParticle.hh"
+#include <string>
+
+#include <iosfwd>
+
+typedef EvtDecayBase* EvtDecayBasePtr;
+
+class EvtPythia:public  EvtDecayIncoherent  {
+
+public:
+
+  EvtPythia();
+  virtual ~EvtPythia();
+  
+  std::string getName();
+  EvtDecayBase* clone();
+  void decay(EvtParticle *p); 
+  
+  std::string commandName();
+  void command(std::string cmd);
+  
+  void init();
+  
+  void initProbMax();
+  
+  //initialize jetset; sets up decay table and
+  //paramters. Static so it can be invoked from
+  //from EvtJscont.
+  static void pythiaInit(int f);
+  static void pythiacont(double *,int *, int *,
+                        double *,double *,double *,double *);
+  
+private:
+  
+  void store(EvtDecayBase* jsdecay);
+  void fixPolarizations(EvtParticle* p);
+  static void MakePythiaFile(char* fname);
+  static void WritePythiaParticle(std::ofstream &outdec,EvtId ipar,EvtId iparname,int &first);
+  static void WritePythiaEntryHeader(std::ofstream &outdec, int lundkc,
+                                    EvtId evtnum,std::string name,
+                                    int chg, int cchg, int spin2,double mass,
+                                    double width, double maxwidth,double ctau,
+                                    int stable,double rawbrfrsum);
+  static bool diquark(int);
+  static double NominalMass(int);
+  static int njetsetdecays;
+  static EvtDecayBasePtr* jetsetdecays;
+  static int ntable;
+  
+  static int ncommand;
+  static int lcommand;
+  static std::string* commands;
+};
+
+#endif
+
+
+
+