SignedDecayLength3D.h

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#ifndef _SIGNEDDECAYLENGHT3D_H_
#define _SIGNEDDECAYLENGHT3D_H_
#include "TrackingTools/TrajectoryState/interface/TrajectoryStateOnSurface.h"
#include "DataFormats/GeometryCommonDetAlgo/interface/Measurement1D.h"
#include "TrackingTools/TransientTrack/interface/TransientTrack.h"
#include "DataFormats/VertexReco/interface/Vertex.h"
#include "DataFormats/GeometryVector/interface/GlobalVector.h"
#include <utility>

class SignedDecayLength3D {
public:
  // construct

  SignedDecayLength3D(){};

  static std::pair<bool, Measurement1D> apply(const reco::TransientTrack &track,
                                              const GlobalVector &direction,
                                              const reco::Vertex &vertex);

  int id() const { return 3; }

private:
  static TrajectoryStateOnSurface closestApproachToJet(const FreeTrajectoryState &,
                                                       const reco::Vertex &,
                                                       const GlobalVector &,
                                                       const MagneticField *);
};

#endif