Updates EvtGen Code

[u/mrichter/AliRoot.git] / TEvtGen / EvtGenModels / EvtSLBKPole.cpp

diff --git a/TEvtGen/EvtGenModels/EvtSLBKPole.cpp b/TEvtGen/EvtGenModels/EvtSLBKPole.cpp
new file mode 100644 (file)
index 0000000..7a2b5ca
--- /dev/null
+++ b/TEvtGen/EvtGenModels/EvtSLBKPole.cpp
@@ -0,0 +1,100 @@
+//--------------------------------------------------------------------------
+//
+// 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 EvtGen/COPYRIGHT
+//      Copyright (C) 1998      Caltech, UCSB
+//
+// Module: EvtSLBKPole.cc
+//
+// Description: Routine to implement semileptonic decays according
+//              to light cone sum rules
+//
+// Modification history:
+//
+//    liheng       October 20, 2005       Module created
+//
+//------------------------------------------------------------------------
+// 
+#include <stdlib.h>
+#include "EvtGenBase/EvtParticle.hh"
+#include "EvtGenBase/EvtGenKine.hh"
+#include "EvtGenBase/EvtPDL.hh"
+#include "EvtGenBase/EvtReport.hh"
+#include "EvtGenModels/EvtSLBKPole.hh"//modified
+#include "EvtGenModels/EvtSLBKPoleFF.hh"//modified
+#include "EvtGenBase/EvtSemiLeptonicScalarAmp.hh"
+#include "EvtGenBase/EvtSemiLeptonicVectorAmp.hh"
+#include "EvtGenBase/EvtSemiLeptonicTensorAmp.hh"
+#include <string>
+
+EvtSLBKPole::~EvtSLBKPole() {}
+
+std::string EvtSLBKPole::getName(){
+
+   return "SLBKPOLE";//modified
+
+}
+
+
+EvtDecayBase* EvtSLBKPole::clone(){//modified
+
+  return new EvtSLBKPole;
+
+}
+
+void EvtSLBKPole::decay( EvtParticle *p ){//modified
+
+  p->initializePhaseSpace(getNDaug(),getDaugs());
+
+  calcamp->CalcAmp(p,_amp2,SLBKPoleffmodel);//modified
+  return;
+}
+
+void EvtSLBKPole::initProbMax(){
+
+EvtId parnum,mesnum,lnum,nunum;
+
+parnum = getParentId();
+mesnum = getDaug(0);
+lnum = getDaug(1);
+nunum = getDaug(2);
+
+double mymaxprob = calcamp->CalcMaxProb(parnum,mesnum,
+                       lnum,nunum,SLBKPoleffmodel);//modified
+
+setProbMax(mymaxprob);
+
+}
+
+
+void EvtSLBKPole::init(){//modified
+  
+  checkNDaug(3);
+
+  //We expect the parent to be a scalar 
+  //and the daughters to be X lepton neutrino
+
+  checkSpinParent(EvtSpinType::SCALAR);
+  checkSpinDaughter(1,EvtSpinType::DIRAC);
+  checkSpinDaughter(2,EvtSpinType::NEUTRINO);
+
+  EvtSpinType::spintype mesontype=EvtPDL::getSpinType(getDaug(0));
+
+  SLBKPoleffmodel = new EvtSLBKPoleFF(getNArg(),getArgs());//modified
+  
+  if ( mesontype==EvtSpinType::SCALAR ) { 
+    calcamp = new EvtSemiLeptonicScalarAmp; 
+  }
+  if ( mesontype==EvtSpinType::VECTOR ) { 
+    calcamp = new EvtSemiLeptonicVectorAmp; 
+  }
+  if ( mesontype==EvtSpinType::TENSOR ) { 
+    calcamp = new EvtSemiLeptonicTensorAmp; 
+  }
+  
+}
+