EvtDalitzPoint Class Reference

#include <EvtDalitzPoint.hh>

Public Member Functions
	EvtDalitzPoint ()
	EvtDalitzPoint (double mA, double mB, double mC, double qAB, double qBC, double qCA)
	EvtDalitzPoint (double mA, double mB, double mC, EvtCyclic3::Pair i, double qres, double qhel, double qsum)
	EvtDalitzPoint (const EvtDalitzPlot &, const EvtDalitzCoord &)
	EvtDalitzPoint (const EvtDalitzPoint &other)
	~EvtDalitzPoint ()
EvtDalitzCoord	getDalitzPoint (EvtCyclic3::Pair i, EvtCyclic3::Pair j) const
EvtDalitzPlot	getDalitzPlot () const
double	q (EvtCyclic3::Pair) const
double	bigM () const
double	m (EvtCyclic3::Index) const
double	qres (EvtCyclic3::Pair i) const
double	qhel (EvtCyclic3::Pair i) const
double	qsum () const
double	qMin (EvtCyclic3::Pair i, EvtCyclic3::Pair j) const
double	qMax (EvtCyclic3::Pair i, EvtCyclic3::Pair j) const
double	pp (EvtCyclic3::Index i, EvtCyclic3::Index j) const
double	e (EvtCyclic3::Index i, EvtCyclic3::Pair j) const
double	p (EvtCyclic3::Index i, EvtCyclic3::Pair j) const
double	cosTh (EvtCyclic3::Pair pairAng, EvtCyclic3::Pair pairRes) const
bool	isValid () const
void	print () const

Detailed Description

Definition at line 27 of file EvtDalitzPoint.hh.

Constructor & Destructor Documentation

EvtDalitzPoint() [1/5]

EvtDalitzPoint::EvtDalitzPoint

(

)

Definition at line 18 of file EvtDalitzPoint.cc.

    : _mA( -1. ), _mB( -1. ), _mC( -1. ), _qAB( -1. ), _qBC( -1. ), _qCA( -1. ) {}

Referenced by EvtDalitzPoint().

EvtDalitzPoint() [2/5]

EvtDalitzPoint::EvtDalitzPoint	(	double	mA,
		double	mB,
		double	mC,
		double	qAB,
		double	qBC,
		double	qCA )

Definition at line 21 of file EvtDalitzPoint.cc.

    : _mA( mA ), _mB( mB ), _mC( mC ), _qAB( qAB ), _qBC( qBC ), _qCA( qCA ) {}

EvtDalitzPoint() [3/5]

EvtDalitzPoint::EvtDalitzPoint	(	double	mA,
		double	mB,
		double	mC,
		EvtCyclic3::Pair	i,
		double	qres,
		double	qhel,
		double	qsum )

Definition at line 27 of file EvtDalitzPoint.cc.

    : _mA( mA ), _mB( mB ), _mC( mC ) {
  double qi = qres + qsum / 3.;
  double qj = -qres / 2. + qhel + qsum / 3.;
  double qk = -qres / 2. - qhel + qsum / 3.;
 
  if ( i == AB )
  {
    _qAB = qi;
    _qBC = qj;
    _qCA = qk;
  }
  else if ( i == BC )
  {
    _qAB = qk;
    _qBC = qi;
    _qCA = qj;
  }
  else if ( i == CA )
  {
    _qAB = qj;
    _qBC = qk;
    _qCA = qi;
  }
}

EvtDalitzPoint() [4/5]

EvtDalitzPoint::EvtDalitzPoint	(	const EvtDalitzPlot &	dp,
		const EvtDalitzCoord &	x )

Definition at line 54 of file EvtDalitzPoint.cc.

    : _mA( dp.m( A ) ), _mB( dp.m( B ) ), _mC( dp.m( C ) ) {
  if ( x.pair1() == AB ) _qAB = x.q1();
  else if ( x.pair2() == AB ) _qAB = x.q2();
  else _qAB = dp.sum() - x.q1() - x.q2();
 
  if ( x.pair1() == BC ) _qBC = x.q1();
  else if ( x.pair2() == BC ) _qBC = x.q2();
  else _qBC = dp.sum() - x.q1() - x.q2();
 
  if ( x.pair1() == CA ) _qCA = x.q1();
  else if ( x.pair2() == CA ) _qCA = x.q2();
  else _qCA = dp.sum() - x.q1() - x.q2();
}

EvtDalitzPoint() [5/5]

EvtDalitzPoint::EvtDalitzPoint

(

const EvtDalitzPoint &

other

)

Definition at line 69 of file EvtDalitzPoint.cc.

    : _mA( other._mA )
    , _mB( other._mB )
    , _mC( other._mC )
    , _qAB( other._qAB )
    , _qBC( other._qBC )
    , _qCA( other._qCA ) {}

~EvtDalitzPoint()

EvtDalitzPoint::~EvtDalitzPoint

(

)

Definition at line 77 of file EvtDalitzPoint.cc.

{}

Member Function Documentation

bigM()

double EvtDalitzPoint::bigM

(

)

const

Definition at line 163 of file EvtDalitzPoint.cc.

                                  {
  return sqrt( _qAB + _qBC + _qCA - _mA * _mA - _mB * _mB - _mC * _mC );
}

Referenced by getDalitzPlot(), and isValid().

cosTh()

double EvtDalitzPoint::cosTh	(	EvtCyclic3::Pair	pairAng,
		EvtCyclic3::Pair	pairRes ) const

Definition at line 132 of file EvtDalitzPoint.cc.

                                                                                   {
  EvtDalitzPlot dp = getDalitzPlot();
  return dp.cosTh( pairAng, q( pairAng ), pairRes, q( pairRes ) );
}

e()

double EvtDalitzPoint::e	(	EvtCyclic3::Index	i,
		EvtCyclic3::Pair	j ) const

Definition at line 122 of file EvtDalitzPoint.cc.

                                                                    {
  EvtDalitzPlot dp = getDalitzPlot();
  return dp.e( i, j, q( j ) );
}

getDalitzPlot()

EvtDalitzPlot EvtDalitzPoint::getDalitzPlot

(

)

const

Definition at line 141 of file EvtDalitzPoint.cc.

                                                  {
  return EvtDalitzPlot( _mA, _mB, _mC, bigM() );
}

Referenced by cosTh(), e(), isValid(), p(), print(), qMax(), and qMin().

getDalitzPoint()

EvtDalitzCoord EvtDalitzPoint::getDalitzPoint	(	EvtCyclic3::Pair	i,
		EvtCyclic3::Pair	j ) const

Definition at line 137 of file EvtDalitzPoint.cc.

                                                                                        {
  return EvtDalitzCoord( i, q( i ), j, q( j ) );
}

isValid()

bool EvtDalitzPoint::isValid

(

)

const

Definition at line 145 of file EvtDalitzPoint.cc.

                                   {
  // Check masses
 
  double M = bigM();
  if ( _mA < 0 || _mB < 0 || _mC < 0 || M <= 0 ) return false;
  if ( M < _mA + _mB + _mC ) return false;
 
  // Check that first coordinate is within absolute limits
 
  bool          inside = false;
  EvtDalitzPlot dp     = getDalitzPlot();
 
  if ( dp.qAbsMin( AB ) <= _qAB && _qAB <= dp.qAbsMax( AB ) )
    if ( qMin( BC, AB ) <= _qBC && _qBC <= qMax( BC, AB ) ) inside = true;
 
  return inside;
}

Referenced by EvtDalitzResPdf::randomPoint().

m()

double EvtDalitzPoint::m

(

EvtCyclic3::Index

i

)

const

Definition at line 87 of file EvtDalitzPoint.cc.

                                                  {
  double ret = _mA;
  if ( B == i ) ret = _mB;
  else if ( C == i ) ret = _mC;
 
  return ret;
}

Referenced by EvtDalitzPoint(), and pp().

p()

double EvtDalitzPoint::p	(	EvtCyclic3::Index	i,
		EvtCyclic3::Pair	j ) const

Definition at line 127 of file EvtDalitzPoint.cc.

                                                                    {
  EvtDalitzPlot dp = getDalitzPlot();
  return dp.p( i, j, q( j ) );
}

pp()

double EvtDalitzPoint::pp	(	EvtCyclic3::Index	i,
		EvtCyclic3::Index	j ) const

Definition at line 117 of file EvtDalitzPoint.cc.

                                                                      {
  if ( i == j ) return m( i ) * m( i );
  else return ( q( combine( i, j ) ) - m( i ) * m( i ) - m( j ) * m( j ) ) / 2.;
}

print()

void EvtDalitzPoint::print

(

)

const

Definition at line 167 of file EvtDalitzPoint.cc.

                                 {
  getDalitzPlot().print();
  printf( "%f %f %f\n", _qAB, _qBC, _qCA );
}

q()

double EvtDalitzPoint::q

(

EvtCyclic3::Pair

i

)

const

Definition at line 79 of file EvtDalitzPoint.cc.

                                                 {
  double ret = _qAB;
  if ( BC == i ) ret = _qBC;
  else if ( CA == i ) ret = _qCA;
 
  return ret;
}

qhel()

double EvtDalitzPoint::qhel

(

EvtCyclic3::Pair

i

)

const

Definition at line 100 of file EvtDalitzPoint.cc.

                                                    {
  Pair j = next( i );
  Pair k = prev( i );
  return ( q( j ) - q( k ) ) / 2.;
}

Referenced by EvtDalitzPoint().

qMax()

double EvtDalitzPoint::qMax	(	EvtCyclic3::Pair	i,
		EvtCyclic3::Pair	j ) const

Definition at line 112 of file EvtDalitzPoint.cc.

                                                                      {
  EvtDalitzPlot dp = getDalitzPlot();
  return dp.qMax( i, j, q( j ) );
}

Referenced by isValid().

qMin()

double EvtDalitzPoint::qMin	(	EvtCyclic3::Pair	i,
		EvtCyclic3::Pair	j ) const

Definition at line 107 of file EvtDalitzPoint.cc.

                                                                      {
  EvtDalitzPlot dp = getDalitzPlot();
  return dp.qMin( i, j, q( j ) );
}

Referenced by isValid().

qres()

double EvtDalitzPoint::qres

(

EvtCyclic3::Pair

i

)

const

Definition at line 97 of file EvtDalitzPoint.cc.

                                                    {
  return ( 2. * q( i ) - q( EvtCyclic3::prev( i ) ) - q( EvtCyclic3::next( i ) ) ) / 3.;
}

Referenced by EvtDalitzPoint().

qsum()

double EvtDalitzPoint::qsum

(

)

const

Definition at line 105 of file EvtDalitzPoint.cc.

{ return _qAB + _qBC + _qCA; }

Referenced by EvtDalitzPoint().

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

• EvtDalitzPoint.hh
• EvtDalitzPoint.cc