/cvmfs/atlas.cern.ch/repo/sw/ASG/AnalysisBase/2.4.31/xAODBPhys/xAODBPhys/BPhysHypoHelper.h

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#ifndef XAOD_BPHYSHYPOHELPER_H
#define XAOD_BPHYSHYPOHELPER_H

#include "BPhysHelper.h"

#include "TVector3.h"
#include "TLorentzVector.h"
#include "TMatrixTSym.h"

#include <assert.h>


namespace xAOD {

  class BPhysHypoHelper : public BPhysHelper {

    public:
      
      /************************************************************************/
      BPhysHypoHelper(const std::string hypo, const xAOD::Vertex* b) :
        BPhysHelper(b),
        m_hypo(hypo)
      {
        /* nothing here */
      }
      
      /************************************************************************/
      float mass();     
      float massErr();  

      bool setMass   (const float val);  
      bool setMassErr(const float val);  
      
      bool setMass(const std::vector<double> trkMasses);
      
      /************************************************************************/

      enum tau_type { TAU_CONST_MASS, TAU_INV_MASS };
                    
      float tau(const pv_type vertexType = BPhysHelper::PV_MIN_A0,
                const tau_type tauType = BPhysHypoHelper::TAU_CONST_MASS);  
                    
      float tauErr(const pv_type vertexType = BPhysHelper::PV_MIN_A0,
                   const tau_type tauType = BPhysHypoHelper::TAU_CONST_MASS);  

      bool setTau(const float val,
                  const pv_type vertexType = BPhysHelper::PV_MIN_A0,
                  const tau_type tauType = BPhysHypoHelper::TAU_CONST_MASS);  
                    
      bool setTauErr(const float val, 
                     const pv_type vertexType = BPhysHelper::PV_MIN_A0,
                     const tau_type tauType = BPhysHypoHelper::TAU_CONST_MASS);  
      
      /************************************************************************/

      bool pass() const;
      
      bool setPass(bool passVal);
      


      /************************************************************************/
      
    protected:
      
      std::string m_hypo;   
      
  };
}

#endif
  
  

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