D0ToKLpipi.h

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#ifndef D0TO2KLPIPI_H
#define D0TO2KLPIPI_H
 
#include <vector>
#include <complex>
 
using namespace std;
 
class D0ToKLpipi{
 
public:
  
  D0ToKLpipi() {}
  virtual ~D0ToKLpipi();
 
  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[12], phir[12];
  //vector < complex<double> > CP_mult, beta, fprod;
  complex<double> CP_mult[5], beta[5], fprod[5];
  double tan2thetaC;
  double pi180inv;
  double mass_R[12], width_R[12];
  int spin_R[12];
  double frac1[3], frac2[3], frac3[3];
  double rd[4], deltad[4], Rf[4];
  double ma[5], g[5][5];  // Kmatrix_couplings
};
 
#endif