--- /dev/null
+//--------------------------------------------------------------------------
+//
+// 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
+