EvtBreitWignerPdf Class Reference

#include <EvtBreitWignerPdf.hh>

Inheritance diagram for EvtBreitWignerPdf:

Public Member Functions
	EvtBreitWignerPdf (double min, double max, double m0, double g0)
	EvtBreitWignerPdf (const EvtBreitWignerPdf &other)
virtual	~EvtBreitWignerPdf ()
double	pdf (const EvtPoint1D &x) const
EvtPdf< EvtPoint1D > *	clone () const
double	pdfIntegral (double m) const
double	pdfIntegralInverse (double x) const
double	m0 () const
double	g0 () const
Public Member Functions inherited from EvtIntegPdf1D
	EvtIntegPdf1D (double min, double max)
	EvtIntegPdf1D (const EvtIntegPdf1D &)
virtual	~EvtIntegPdf1D ()
virtual EvtValError	compute_integral () const
virtual EvtPoint1D	randomPoint ()
Public Member Functions inherited from EvtPdf< EvtPoint1D >
	EvtPdf ()
virtual	~EvtPdf ()
double	evaluate (const EvtPoint1D &p) const
EvtPdfMax< EvtPoint1D >	findMax (const EvtPdf< EvtPoint1D > &pc, int N)
EvtValError	findGenEff (const EvtPdf< EvtPoint1D > &pc, int N, int nFindMax)
void	setItg (EvtValError itg)
EvtValError	getItg () const
EvtValError	compute_mc_integral (const EvtPdf< EvtPoint1D > &pc, int N)
EvtPredGen< EvtPdfGen< EvtPoint1D >, EvtPdfPred< EvtPoint1D > >	accRejGen (const EvtPdf< EvtPoint1D > &pc, int nMax, double factor=1.)

Additional Inherited Members
Protected Attributes inherited from EvtIntegPdf1D
double	_min
double	_max
Protected Attributes inherited from EvtPdf< EvtPoint1D >
EvtValError	_itg

Detailed Description

Definition at line 17 of file EvtBreitWignerPdf.hh.

Constructor & Destructor Documentation

EvtBreitWignerPdf() [1/2]

EvtBreitWignerPdf::EvtBreitWignerPdf	(	double	min,
		double	max,
		double	m0,
		double	g0 )

Definition at line 21 of file EvtBreitWignerPdf.cc.

    : EvtIntegPdf1D( min, max ), _m0( m0 ), _g0( g0 ) {}

Referenced by clone(), and EvtBreitWignerPdf().

EvtBreitWignerPdf() [2/2]

EvtBreitWignerPdf::EvtBreitWignerPdf

(

const EvtBreitWignerPdf &

other

)

Definition at line 24 of file EvtBreitWignerPdf.cc.

    : EvtIntegPdf1D( other ), _m0( other._m0 ), _g0( other._g0 ) {}

~EvtBreitWignerPdf()

EvtBreitWignerPdf::~EvtBreitWignerPdf ( )

virtual

Definition at line 27 of file EvtBreitWignerPdf.cc.

{}

Member Function Documentation

clone()

EvtPdf< EvtPoint1D > * EvtBreitWignerPdf::clone ( ) const

inlinevirtual

Implements EvtPdf< EvtPoint1D >.

Definition at line 25 of file EvtBreitWignerPdf.hh.

{ return new EvtBreitWignerPdf( *this ); }

g0()

double EvtBreitWignerPdf::g0 ( ) const

inline

Definition at line 33 of file EvtBreitWignerPdf.hh.

{ return _g0; }

Referenced by EvtBreitWignerPdf().

m0()

double EvtBreitWignerPdf::m0 ( ) const

inline

Definition at line 32 of file EvtBreitWignerPdf.hh.

{ return _m0; }

Referenced by EvtBreitWignerPdf().

pdf()

double EvtBreitWignerPdf::pdf ( const EvtPoint1D & x ) const

virtual

Implements EvtPdf< EvtPoint1D >.

Definition at line 29 of file EvtBreitWignerPdf.cc.

                                                         {
  double m = x.value();
  if ( ( 0 == ( m - _m0 ) ) && ( 0. == _g0 ) )
  {
 
    printf( "Delta function Breit-Wigner\n" );
    assert( 0 );
  }
 
  double ret = _g0 / EvtConst::twoPi / ( ( m - _m0 ) * ( m - _m0 ) + _g0 * _g0 / 4 );
 
  return ret;
}

pdfIntegral()

double EvtBreitWignerPdf::pdfIntegral ( double m ) const

virtual

Implements EvtIntegPdf1D.

Definition at line 43 of file EvtBreitWignerPdf.cc.

                                                      {
  double itg = 0;
  if ( _g0 == 0 )
  {
 
    if ( m > _m0 ) itg = 1.;
    else if ( m < _m0 ) itg = 0.;
    else itg = 0.5;
  }
  else itg = atan( ( m - _m0 ) / ( _g0 / 2. ) ) / EvtConst::pi + 0.5;
 
  return itg;
}

pdfIntegralInverse()

double EvtBreitWignerPdf::pdfIntegralInverse ( double x ) const

virtual

Implements EvtIntegPdf1D.

Definition at line 57 of file EvtBreitWignerPdf.cc.

                                                             {
  if ( x < 0 || x > 1 )
  {
 
    printf( "Invalid integral value %f\n", x );
    assert( 0 );
  }
 
  double m = _m0;
  if ( _g0 != 0 ) m = _m0 + ( _g0 / 2. ) * tan( EvtConst::pi * ( x - 0.5 ) );
 
  return m;
}

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

• EvtBreitWignerPdf.hh
• EvtBreitWignerPdf.cc