Chi2VertexFitter.h

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#ifndef RecoTauTag_ImpactParameter_Chi2VertexFitter_h
#define RecoTauTag_ImpactParameter_Chi2VertexFitter_h

/* From SimpleFits Package
 * Designed an written by
 * author: Ian M. Nugent
 * Humboldt Foundations
 */

#include "Minuit2/FunctionMinimum.h"
#include "Minuit2/FCNBase.h"
#include "RecoTauTag/ImpactParameter/interface/TrackHelixVertexFitter.h"

namespace tauImpactParameter {

  class Chi2VertexFitter : public TrackHelixVertexFitter {
  public:
    Chi2VertexFitter(const std::vector<TrackParticle>& particles, const TVector3& vguess, double nsigma = 4.0)
        : TrackHelixVertexFitter(particles, vguess), nsigma_(nsigma){};
    ~Chi2VertexFitter() override{};

    bool fit() override;

  private:
    double nsigma_;
  };

}  // namespace tauImpactParameter
#endif