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.)
{}

EvtDalitzPoint() [2/5]

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

Definition at line 22 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 28 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 42 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 62 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 67 of file EvtDalitzPoint.cc.

{}

Member Function Documentation

bigM()

double EvtDalitzPoint::bigM

(

)

const

Definition at line 176 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 138 of file EvtDalitzPoint.cc.

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

Referenced by EvtPto3P::initDaughters().

e()

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

Definition at line 126 of file EvtDalitzPoint.cc.

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

Referenced by EvtPto3P::initDaughters().

getDalitzPlot()

EvtDalitzPlot EvtDalitzPoint::getDalitzPlot

(

)

const

Definition at line 151 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 145 of file EvtDalitzPoint.cc.

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

isValid()

bool EvtDalitzPoint::isValid

(

)

const

Definition at line 156 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 EvtPto3P::initDaughters(), and EvtDalitzResPdf::randomPoint().

m()

double EvtDalitzPoint::m

(

EvtCyclic3::Index

i

)

const

Definition at line 80 of file EvtDalitzPoint.cc.

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

Referenced by pp().

p()

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

Definition at line 132 of file EvtDalitzPoint.cc.

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

Referenced by EvtPto3P::initDaughters().

pp()

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

Definition at line 120 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 182 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 70 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 96 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 114 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 108 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 92 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 102 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