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File indexing completed on 2021-02-14 14:26:46

0001 #ifndef PixelTrackFitting_PixelTrackErrorParam_H
0002 #define PixelTrackFitting_PixelTrackErrorParam_H
0003 #include <cmath>
0004 
0005 class PixelTrackErrorParam {
0006 public:
0007   PixelTrackErrorParam(double eta, double pt);
0008   double errPt() const;
0009   // { return ptPar0_[theIEta]*thePt + ptPar1_[theIEta]*thePt2; }
0010   inline double errCot() const { return cotPar0_[theIEta] + cotPar1_[theIEta] / thePt + cotPar2_[theIEta] / thePt2; }
0011   inline double errTip() const { return sqrt(tipPar0_[theIEta] + tipPar1_[theIEta] / thePt2); }
0012   inline double errZip() const { return sqrt(zipPar0_[theIEta] + zipPar1_[theIEta] / thePt2); }
0013   inline double errPhi() const { return sqrt(phiPar0_[theIEta] + phiPar1_[theIEta] / thePt2); }
0014 
0015 private:
0016   unsigned int theIEta;
0017   double thePt, thePt2;
0018 
0019   static const unsigned int nEta = 25;
0020   static double const ptPar0_[nEta];
0021   static double const ptPar1_[nEta];
0022   static double const cotPar0_[nEta];
0023   static double const cotPar1_[nEta];
0024   static double const cotPar2_[nEta];
0025   static double const tipPar0_[nEta];
0026   static double const tipPar1_[nEta];
0027   static double const zipPar0_[nEta];
0028   static double const zipPar1_[nEta];
0029   static double const phiPar0_[nEta];
0030   static double const phiPar1_[nEta];
0031 };
0032 
0033 #endif