EvtTwoBodyKine Class Reference

#include <EvtTwoBodyKine.hh>

Public Types
enum	Index { A , B , AB }

Public Member Functions
	EvtTwoBodyKine ()
	EvtTwoBodyKine (double mA, double mB, double mAB)
	EvtTwoBodyKine (const EvtTwoBodyKine &other)
	~EvtTwoBodyKine ()
double	mA () const
double	mB () const
double	mAB () const
double	m (Index i) const
double	p (Index i=AB) const
double	e (Index i, Index j) const
void	print (std::ostream &os) const

Detailed Description

Definition at line 17 of file EvtTwoBodyKine.hh.

Member Enumeration Documentation

Index

enum EvtTwoBodyKine::Index

Enumerator
A
B
AB

Definition at line 20 of file EvtTwoBodyKine.hh.

{ A, B, AB };

Constructor & Destructor Documentation

EvtTwoBodyKine() [1/3]

EvtTwoBodyKine::EvtTwoBodyKine

(

)

Definition at line 19 of file EvtTwoBodyKine.cc.

: _mA( 0. ), _mB( 0. ), _mAB( 0. ) {}

Referenced by EvtTwoBodyKine().

EvtTwoBodyKine() [2/3]

EvtTwoBodyKine::EvtTwoBodyKine	(	double	mA,
		double	mB,
		double	mAB )

Definition at line 21 of file EvtTwoBodyKine.cc.

    : _mA( mA ), _mB( mB ), _mAB( mAB ) {
  if ( mAB < mA + mB )
  {
 
    report( INFO, "EvtGen" ) << mAB << " < " << mA << " + " << mB << endl;
    assert( 0 );
  }
}

EvtTwoBodyKine() [3/3]

EvtTwoBodyKine::EvtTwoBodyKine

(

const EvtTwoBodyKine &

other

)

Definition at line 31 of file EvtTwoBodyKine.cc.

    : _mA( other._mA ), _mB( other._mB ), _mAB( other._mAB ) {}

~EvtTwoBodyKine()

EvtTwoBodyKine::~EvtTwoBodyKine

(

)

Definition at line 34 of file EvtTwoBodyKine.cc.

{}

Member Function Documentation

e()

double EvtTwoBodyKine::e	(	Index	i,
		Index	j ) const

Definition at line 72 of file EvtTwoBodyKine.cc.

                                                 {
  double ret = m( i );
  if ( i != j )
  {
 
    double pD = p( j );
    ret       = sqrt( ret * ret + pD * pD );
  }
  return ret;
}

Referenced by EvtDalitzPlot::qMax(), and EvtDalitzPlot::qMin().

m()

double EvtTwoBodyKine::m

(

Index

i

)

const

Definition at line 36 of file EvtTwoBodyKine.cc.

                                        {
  double ret = _mAB;
  if ( A == i ) ret = _mA;
  else if ( B == i ) ret = _mB;
 
  return ret;
}

Referenced by e().

mA()

double EvtTwoBodyKine::mA ( ) const

inline

Definition at line 29 of file EvtTwoBodyKine.hh.

{ return _mA; }

Referenced by EvtTwoBodyKine().

mAB()

double EvtTwoBodyKine::mAB ( ) const

inline

Definition at line 31 of file EvtTwoBodyKine.hh.

{ return _mAB; }

Referenced by EvtTwoBodyKine().

mB()

double EvtTwoBodyKine::mB ( ) const

inline

Definition at line 30 of file EvtTwoBodyKine.hh.

{ return _mB; }

Referenced by EvtTwoBodyKine().

p()

double EvtTwoBodyKine::p

(

Index

i = AB

)

const

Definition at line 44 of file EvtTwoBodyKine.cc.

                                        {
  double p0 = 0.;
 
  if ( i == AB )
  {
 
    double x = _mAB * _mAB - _mA * _mA - _mB * _mB;
    double y = 2 * _mA * _mB;
    p0       = sqrt( x * x - y * y ) / 2. / _mAB;
  }
  else if ( i == A )
  {
 
    double x = _mA * _mA - _mAB * _mAB - _mB * _mB;
    double y = 2 * _mAB * _mB;
    p0       = sqrt( x * x - y * y ) / 2. / _mA;
  }
  else
  {
 
    double x = _mB * _mB - _mAB * _mAB - _mA * _mA;
    double y = 2 * _mAB * _mA;
    p0       = sqrt( x * x - y * y ) / 2. / _mB;
  }
 
  return p0;
}

Referenced by EvtMassAmp::amplitude(), e(), EvtDalitzReso::evaluate(), EvtDalitzPlot::qMax(), and EvtDalitzPlot::qMin().

print()

void EvtTwoBodyKine::print

(

std::ostream &

os

)

const

Definition at line 83 of file EvtTwoBodyKine.cc.

                                              {
  os << " mA = " << _mA << endl;
  os << " mB = " << _mB << endl;
  os << "mAB = " << _mAB << endl;
}

Referenced by operator<<().

---

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

• EvtTwoBodyKine.hh
• EvtTwoBodyKine.cc