EvtFlatte Class Reference

#include <EvtFlatte.hh>

Public Member Functions
EvtFlatte &	operator= (const EvtFlatte &)
	EvtFlatte (const EvtVector4R &p4_p, const EvtVector4R &p4_d1, const EvtVector4R &p4_d2, double ampl, double theta, double mass, vector< EvtFlatteParam > &params)
virtual	~EvtFlatte ()
const EvtVector4R &	p4_p ()
const EvtVector4R &	p4_d1 ()
const EvtVector4R &	p4_d2 ()
double	amplitude ()
double	theta ()
double	mass ()
EvtComplex	resAmpl ()

Detailed Description

Definition at line 47 of file EvtFlatte.hh.

Constructor & Destructor Documentation

EvtFlatte()

EvtFlatte::EvtFlatte	(	const EvtVector4R &	p4_p,
		const EvtVector4R &	p4_d1,
		const EvtVector4R &	p4_d2,
		double	ampl,
		double	theta,
		double	mass,
		vector< EvtFlatteParam > &	params )

Definition at line 54 of file EvtFlatte.cc.

    : _p4_p( p4_p )
    , _p4_d1( p4_d1 )
    , _p4_d2( p4_d2 )
    , _ampl( ampl )
    , _theta( theta )
    , _mass( mass )
    , _params( params )
//  _m1a(m1a), _m1b(m1b), _g1(g1),
//  _m2a(m2a), _m2b(m2b), _g2(g2)
{}

Referenced by operator=().

~EvtFlatte()

EvtFlatte::~EvtFlatte ( )

virtual

Definition at line 30 of file EvtFlatte.cc.

{}

Member Function Documentation

amplitude()

double EvtFlatte::amplitude ( )

inline

Definition at line 69 of file EvtFlatte.hh.

{ return _ampl; }

mass()

double EvtFlatte::mass ( )

inline

Definition at line 75 of file EvtFlatte.hh.

{ return _mass; }

Referenced by EvtFlatte(), and resAmpl().

operator=()

EvtFlatte & EvtFlatte::operator=

(

const EvtFlatte &

n

)

Definition at line 34 of file EvtFlatte.cc.

                                                  {
  if ( &n == this ) return *this;
  _p4_p   = n._p4_p;
  _p4_d1  = n._p4_d1;
  _p4_d2  = n._p4_d2;
  _ampl   = n._ampl;
  _theta  = n._theta;
  _mass   = n._mass;
  _params = n._params;
  //  _m1a = n._m1a;
  //  _m1b = n._m1b;
  //  _g1 = n._g1;
  //  _m2a = n._m2a;
  //  _m2b = n._m2b;
  //  _g2 = n._g2;
  return *this;
}

p4_d1()

const EvtVector4R & EvtFlatte::p4_d1 ( )

inline

Definition at line 65 of file EvtFlatte.hh.

{ return _p4_d1; }

Referenced by EvtFlatte().

p4_d2()

const EvtVector4R & EvtFlatte::p4_d2 ( )

inline

Definition at line 66 of file EvtFlatte.hh.

{ return _p4_d2; }

Referenced by EvtFlatte().

p4_p()

const EvtVector4R & EvtFlatte::p4_p ( )

inline

Definition at line 64 of file EvtFlatte.hh.

{ return _p4_p; }

Referenced by EvtFlatte().

resAmpl()

EvtComplex EvtFlatte::resAmpl

(

)

Definition at line 73 of file EvtFlatte.cc.

                              {
 
  double pi180inv = 1.0 / EvtConst::radToDegrees;
 
  //   EvtComplex ampl(cos(_theta*pi180inv), sin(_theta*pi180inv));
  //   ampl *= _ampl;
 
  // SCALARS ONLY
  double mR = ( _p4_d1 + _p4_d2 ).mass();
 
  EvtComplex w;
 
  for ( vector<EvtFlatteParam>::const_iterator param = _params.begin(); param != _params.end();
        ++param )
  {
 
    double m1 = ( *param ).m1();
    double m2 = ( *param ).m2();
    double g  = ( *param ).g();
    w += ( g * g *
           sqrtCplx( ( 1 - ( ( m1 - m2 ) * ( m1 - m2 ) ) / ( mR * mR ) ) *
                     ( 1 - ( ( m1 + m2 ) * ( m1 + m2 ) ) / ( mR * mR ) ) ) );
    //     cout << m1 << " " << mR << " " << w << endl;
  }
 
  EvtComplex denom = _mass * _mass - mR * mR - EvtComplex( 0, 1 ) * w;
  EvtComplex ampl =
      _ampl * EvtComplex( cos( _theta * pi180inv ), sin( _theta * pi180inv ) ) / denom;
  //  cout << abs(1/denom) << endl;
  return ampl;
}

Referenced by EvtDDalitz::decay().

theta()

double EvtFlatte::theta ( )

inline

Definition at line 72 of file EvtFlatte.hh.

{ return _theta; }

Referenced by EvtFlatte().

---

The documentation for this class was generated from the following files:

• EvtFlatte.hh
• EvtFlatte.cc