BTagSF.h

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#ifndef PhysicsTools_Heppy_BTagSF_h
#define PhysicsTools_Heppy_BTagSF_h

#include "TRandom3.h"
#include <iostream>

namespace heppy {

class BTagSF{

 public:
    
  BTagSF( int seed=0 );
  ~BTagSF();
    
  Bool_t isbtagged(Float_t pt, Float_t eta, Float_t csv, Int_t jetflavor, Bool_t isdata, UInt_t btagsys, UInt_t mistagsys, Bool_t is2012);
  Double_t getSFb(Float_t pt, UInt_t btagsys, Bool_t is2012);
  Double_t getSFc(Float_t pt, UInt_t btagsys, Bool_t is2012);
  Double_t getSFl(Float_t pt, Float_t eta, UInt_t mistagsys, Bool_t is2012);
  Double_t getMistag(Float_t pt, Float_t eta);

  enum { kNo, kDown, kUp };                     // systematic variations 


 private:
  
  TRandom3* randm;

};
};

#endif