Integral

Description

Functor to get the integral of the Double Crystal Ball function

The integral is useful when cosntructing the response matrix.

Todo:

write LaTeX version

#include <DoubleCrystalBall.h>

Inheritance diagram for Integral:

Collaboration diagram for Integral:

Public Member Functions
void	Eval (double *x) final
Public Member Functions inherited from Base
double	Z (double x)
void	SetParameters (double *p)
double	operator() (double *x, double *p)
	Base (TF1 *f=nullptr)
void	dump ()
virtual	~Base ()=default

Additional Inherited Members
Public Attributes inherited from Base
double	N
double	mu
double	sigma
double	kL
double	nL
double	kR
double	nR
double	AL
double	AR
double	BL
double	BR
double	z
double	aR
double	aL
double	expaR2
double	expaL2
double	CR
double	CL
double	DD
double	K
double	result

Member Function Documentation

Eval()

void Eval ( double *  x )

finalvirtual

Virtual method to calculate the value of the function, given the internal set of parameters and the value of x given as parameter.

Implements Base.

{
    if (*x < kL) {
        double R = aL/nL;
        result = (N/K) * expaL2*pow(1-R*(aL+z),1-nL) / (R* (nL-1));
    }
    else if (*x < kR) {
        result = (N/K) * (CL + sqrt(M_PI/2.)*(erf(z/sqrt(2)) + erf(aL/sqrt(2))));
    }
    else {
        double R = aR/nR;
        result = (N/K) * (CL + DD + expaR2 * ( 1. - pow(1-R*(aR-z),1-nR) ) / ( R* (nR-1) ) );
    }
}

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

• /builds/cms-analysis/general/DasAnalysisSystem/Core/Installer/Core/JEC/interface/DoubleCrystalBall.h
• /builds/cms-analysis/general/DasAnalysisSystem/Core/Installer/Core/JEC/src/DoubleCrystalBall.cc