/home/bes3soft/bes3soft/Boss/7.0.2/dist/7.0.2/Generator/Mcgpj/Mcgpj-00-01-04/src/code3pi/src/T3piEtaCrossPart.C File Reference

#include <iostream>
#include "T3piEtaCrossPart.h"
#include "TConstant.h"
#include <complex>

Go to the source code of this file.

Typedefs
typedef complex< double >	complex_t
Functions
complex_t	operator+ (const double &x, const complex_t &y)
complex_t	operator- (const double &x, const complex_t &y)
complex_t	Amp (double s)
complex_t	bw_rho (double s)
complex_t	bw_om (double s)

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Typedef Documentation

typedef complex<double> complex_t

Definition at line 9 of file T3piEtaCrossPart.C.

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Function Documentation

complex_t Amp

(

double

s

)

[inline]

Definition at line 18 of file T3piEtaCrossPart.C.

References alpha, exp(), rb::Geepsi, rb::Geepsip, rb::Geepsipp, rb::Gpsi, rb::Gpsip, rb::Gpsipp, I, M_PI, rb::Mpsi, rb::Mpsi2, rb::Mpsip, rb::Mpsip2, rb::Mpsipp, and rb::Mpsipp2.

                              {
  const complex_t I(0,1);
  const double Apsi = alpha*Gpsi/(3*Geepsi);
  const double phipsi = -M_PI/2;
  const double Apsip = alpha*Gpsip/(3*Geepsip);
  const double phipsip = -M_PI/2;
  const double Apsipp = alpha*Gpsipp/(3*Geepsipp);
  const double phipsipp = -M_PI/2;
  complex_t res = 3*sqrt(s)/alpha*
    (
     Geepsi*(1 + Apsi*exp(I*phipsi))/(s - Mpsi2 + I*Mpsi*Gpsi) +
     Geepsip*(1 + Apsip*exp(I*phipsip))/(s - Mpsip2 + I*Mpsip*Gpsip) +
     Geepsipp*(1 + Apsipp*exp(I*phipsipp))/(s - Mpsipp2 + I*Mpsipp*Gpsipp));
  return res;
}

complex_t bw_om

(

double

s

)

[inline]

Definition at line 50 of file T3piEtaCrossPart.C.

References rb::Gomega, and rb::Momega.

Referenced by J5pi(), T4piCrossPart::SetJ(), and T3piEtaCrossPart::SetJ().

                                {
  complex_t Domega = complex_t(Momega*Momega-s,-Momega*Gomega);
  complex_t bw = 1./Domega;
  return bw;
}

complex_t bw_rho

(

double

s

)

[inline]

Definition at line 34 of file T3piEtaCrossPart.C.

References rb::Grho, rb::Grhop, rb::Mrho, and rb::Mrhop.

                                 {
  const double sig = -0.1;
  complex_t Drho = complex_t(Mrho*Mrho-s,-Mrho*Grho);
  complex_t Drhop = complex_t(Mrhop*Mrhop-s,-Mrhop*Grhop);
  complex_t bw = (1./Drho + sig/Drhop);
//
// dumping factor added in omega part: to be substituted with a formfactor
//
  const double Et2 = (2.2*1e3)*(2.2*1e3);
  if(s>Et2){
    double r = Et2/s;
    bw *= r*r;
  }
  return bw;
}

complex_t operator+	(	const double &	x,
		const complex_t &	y
	)			[inline]

Definition at line 10 of file T3piEtaCrossPart.C.

                                                                {
  return y + x;
}

complex_t operator-	(	const double &	x,
		const complex_t &	y
	)			[inline]

Definition at line 14 of file T3piEtaCrossPart.C.

                                                                {
  return -(y - x);
}

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