AliDecayer realisation for the EvtGen code and EvtGen itself.

[u/mrichter/AliRoot.git] / TEvtGen / EvtGenBase / EvtNeutrinoParticle.hh

diff --git a/TEvtGen/EvtGenBase/EvtNeutrinoParticle.hh b/TEvtGen/EvtGenBase/EvtNeutrinoParticle.hh
new file mode 100644 (file)
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+++ b/TEvtGen/EvtGenBase/EvtNeutrinoParticle.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 EvtGen/COPYRIGHT
+//      Copyright (C) 1998      Caltech, UCSB
+//
+// Module: EvtGen/EvtNeutrinoParticle.hh
+//
+// Description:Class to describe neutrinos
+//
+// Modification history:
+//
+//    RYD     September 25, 1996         Module created
+//
+//------------------------------------------------------------------------
+
+#ifndef EVTNEUTRINOPARTICLE_HH
+#define EVTNEUTRINOPARTICLE_HH
+
+#include "EvtGenBase/EvtDiracSpinor.hh"
+#include "EvtGenBase/EvtParticle.hh"
+class EvtId;
+class EvtVector4R;
+
+class EvtNeutrinoParticle:public EvtParticle {
+
+public:
+
+  EvtNeutrinoParticle();
+  virtual ~EvtNeutrinoParticle();
+  void init(EvtId part_n,const EvtVector4R& p4);
+  EvtDiracSpinor spParentNeutrino() const;
+  EvtDiracSpinor spNeutrino() const;
+  EvtSpinDensity rotateToHelicityBasis() const;
+  EvtSpinDensity rotateToHelicityBasis(double alpha,
+                                      double beta,
+                                      double gamma) const;
+  
+private:
+
+  EvtDiracSpinor spinor_rest;
+  EvtDiracSpinor spinor_parent;
+
+  EvtNeutrinoParticle(const EvtNeutrinoParticle& n);
+  EvtNeutrinoParticle& operator=(const EvtNeutrinoParticle& n);
+
+};
+#endif
+