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 21 of file EvtTwoBodyKine.hh.

{A,B,AB}; 

Constructor & Destructor Documentation

EvtTwoBodyKine() [1/3]

EvtTwoBodyKine::EvtTwoBodyKine

(

)

Definition at line 20 of file EvtTwoBodyKine.cc.

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

EvtTwoBodyKine() [2/3]

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

Definition at line 24 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 34 of file EvtTwoBodyKine.cc.

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

~EvtTwoBodyKine()

EvtTwoBodyKine::~EvtTwoBodyKine

(

)

Definition at line 38 of file EvtTwoBodyKine.cc.

{}

Member Function Documentation

e()

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

Definition at line 81 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 42 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 30 of file EvtTwoBodyKine.hh.

{ return _mA; }

Referenced by EvtTwoBodyKine(), and EvtTwoBodyVertex::mA().

mAB()

double EvtTwoBodyKine::mAB ( ) const

inline

Definition at line 32 of file EvtTwoBodyKine.hh.

{ return _mAB; } 

Referenced by EvtTwoBodyKine(), and EvtTwoBodyVertex::mAB().

mB()

double EvtTwoBodyKine::mB ( ) const

inline

Definition at line 31 of file EvtTwoBodyKine.hh.

{ return _mB; }

Referenced by EvtTwoBodyKine(), and EvtTwoBodyVertex::mB().

p()

double EvtTwoBodyKine::p

(

Index

i = AB

)

const

Definition at line 53 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(), EvtTwoBodyVertex::EvtTwoBodyVertex(), EvtDalitzPlot::qMax(), and EvtDalitzPlot::qMin().

print()

void EvtTwoBodyKine::print

(

std::ostream &

os

)

const

Definition at line 93 of file EvtTwoBodyKine.cc.

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

Referenced by operator<<().

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

• EvtTwoBodyKine.hh
• EvtTwoBodyKine.cc