D0ToKSpipi2018.h

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#ifndef D0TO2KSPIPI2018_H
#define D0TO2KSPIPI2018_H
 
#include <complex>
#include <vector>
 
using namespace std;
 
class D0ToKSpipi2018 {
 
public:
  D0ToKSpipi2018() {}
  virtual ~D0ToKSpipi2018();
 
  void init();
 
  complex<double> Amp_PFT( vector<double> k0l, vector<double> pip, vector<double> pim );
 
protected:
private:
  complex<double> K_matrix( vector<double> p_pip, vector<double> p_pim );
  complex<double> amplitude_LASS( vector<double> p_k0l, vector<double> p_pip,
                                  vector<double> p_pim, std::string reso, double A_r,
                                  double Phi_r );
  complex<double> Resonance2( vector<double> p4_p, vector<double> p4_d1,
                              const vector<double> p4_d2, double mag, double theta,
                              double gamma, double bwm, int spin );
 
  int _nd;
 
  float ar[13], phir[13];
  // vector < complex<double> > CP_mult, beta, fprod;
  complex<double> CP_mult[5], beta[5], fprod[5];
  double          tan2thetaC;
  double          pi180inv;
  double          mass_R[13], width_R[13];
  int             spin_R[13];
  double          frac1[3], frac2[3], frac3[3];
  double          rd[4], deltad[4], Rf[4];
  double          ma[5], g[5][5]; // Kmatrix_couplings
};
 
#endif