Roo4lMasses2D Class Reference

#include <HZZ4LRooPdfs.h>

List of all members.

Public Member Functions
virtual TObject *	clone (const char *newname) const
	Roo4lMasses2D ()
	Roo4lMasses2D (const char *name, const char *title, RooAbsReal &_mZstar, RooAbsReal &_mZ, RooAbsReal &_mZZ, RooAbsReal &_Gamma, RooAbsReal &_p0, RooAbsReal &_p1, RooAbsReal &_p2, RooAbsReal &_CBmean, RooAbsReal &_CBwidth, RooAbsReal &_CBalpha, RooAbsReal &_CBn)
	Roo4lMasses2D (const Roo4lMasses2D &other, const char *name=0)
virtual	~Roo4lMasses2D ()
Protected Member Functions
Double_t	evaluate () const
Protected Attributes
RooRealProxy	CBalpha
RooRealProxy	CBmean
RooRealProxy	CBn
RooRealProxy	CBwidth
RooRealProxy	Gamma
RooRealProxy	mZ
RooRealProxy	mZstar
RooRealProxy	mZZ
RooRealProxy	p0
RooRealProxy	p1
RooRealProxy	p2

---

Detailed Description

Definition at line 310 of file HZZ4LRooPdfs.h.

---

Constructor & Destructor Documentation

Roo4lMasses2D::Roo4lMasses2D

(

)

Referenced by clone().

Roo4lMasses2D::Roo4lMasses2D	(	const char *	name,
		const char *	title,
		RooAbsReal &	_mZstar,
		RooAbsReal &	_mZ,
		RooAbsReal &	_mZZ,
		RooAbsReal &	_Gamma,
		RooAbsReal &	_p0,
		RooAbsReal &	_p1,
		RooAbsReal &	_p2,
		RooAbsReal &	_CBmean,
		RooAbsReal &	_CBwidth,
		RooAbsReal &	_CBalpha,
		RooAbsReal &	_CBn
	)

Definition at line 2705 of file HZZ4LRooPdfs.cc.

                                                           :
RooAbsPdf(name,title), 
mZstar("mZstar","mZstar",this,_mZstar),
mZ("mZ","mZ",this,_mZ),
mZZ("mZZ","mZZ",this,_mZZ),
Gamma("Gamma","Gamma",this,_Gamma),
p0("p0","p0",this,_p0),
p1("p1","p1",this,_p1),
p2("p2","p2",this,_p2),
CBmean("CBmean","CBmean",this,_CBmean),
CBwidth("CBwidth","CBwidth",this,_CBwidth),
CBalpha("CBalpha","CBalpha",this,_CBalpha),
CBn("CBn","CBn",this,_CBn)

{ 
} 

Roo4lMasses2D::Roo4lMasses2D	(	const Roo4lMasses2D &	other,
		const char *	name = 0
	)

Definition at line 2735 of file HZZ4LRooPdfs.cc.

                                                                         :  
RooAbsPdf(other,name), 
mZstar("mZstar",this,other.mZstar),
mZ("mZ",this,other.mZ),
mZZ("mZZ",this,other.mZZ),
Gamma("Gamma",this,other.Gamma),
p0("p0",this,other.p0),
p1("p1",this,other.p1),
p2("p2",this,other.p2),
CBmean("CBmean"  ,this,other.CBmean),
CBwidth("CBwidth",this,other.CBwidth),
CBalpha("CBalpha",this,other.CBalpha),
CBn("CBn",this,other.CBn)

{ 
} 

virtual Roo4lMasses2D::~Roo4lMasses2D

(

)

[inline, virtual]

Definition at line 328 of file HZZ4LRooPdfs.h.

{ }

---

Member Function Documentation

virtual TObject* Roo4lMasses2D::clone

(

const char *

newname

)

const [inline, virtual]

Definition at line 327 of file HZZ4LRooPdfs.h.

References Roo4lMasses2D().

{ return new Roo4lMasses2D(*this,newname); }

double Roo4lMasses2D::evaluate

(

)

const [protected]

*

* / CB Shape

Definition at line 2752 of file HZZ4LRooPdfs.cc.

References a, b, beta, CBalpha, CBmean, CBn, CBwidth, alignCSCRings::e, create_public_lumi_plots::exp, Gamma, mZ, mZstar, mZZ, p0, p1, p2, mathSSE::sqrt(), and lumiQTWidget::t.

{ 
        double mZstarDistribution;
        double Numerator,Denominator,beta;
        beta = (1-(mZstar-mZ)*(mZstar-mZ)/(mZZ*mZZ))*(1-(mZstar+mZ)*(mZstar+mZ)/(mZZ*mZZ));
        
        if(beta<0.0) return 1e-12;
        
        //Numerator = mZstar*mZstar*sqrt(beta)*(2+(mZstar*mZstar-mZZ*mZZ+mZ*mZ)*(mZstar*mZstar-mZZ*mZZ+mZ*mZ)/(4*mZstar*mZstar*mZ*mZ));
        Numerator = mZstar*mZstar*sqrt(beta)*(2+(mZstar*mZstar-mZZ*mZZ+mZ*mZ)*(mZstar*mZstar-mZZ*mZZ+mZ*mZ)/(4*mZstar*mZstar*mZ*mZ));
        Denominator = 2*(mZstar*mZstar-mZ*mZ)*(mZstar*mZstar-mZ*mZ)-2*mZ*mZ*Gamma*Gamma;
        
        //mZstarDistribution = Numerator/Denominator;
        mZstarDistribution = Numerator/Denominator;
        //*/
        //mZstarDistribution = 1;
        
        double acceptance = p0+p1*mZstar+p2*mZstar*mZstar;
        //double acceptance = 1;
        
        
        double mZZDistribution;
        /*
         Double_t arg= mZZ - CBmean;  
         Double_t ret =exp(-0.5*arg*arg/(CBwidth*CBwidth)) ;
         //cout << "gauss x = " << x << " mean = " << mean << " sigma = " << sigma << endl ;
         mZZDistribution = ret ;
         //*/
        double t = (mZZ-CBmean)/CBwidth;
        //std:cout << "CBwidth: " << CBwidth << " CBmean: " << CBmean << " mZZ: " << mZZ << std::endl;
        if (CBalpha < 0) t = -t;
        
        double absAlpha = fabs((double)CBalpha);
        
        //std::cout << "t = " << t << std::endl;
        if (t >= -absAlpha) {
                
                mZZDistribution = exp(-0.5*t*t);
                //std::cout << "Gaussian!! " << -.5*t*t << " : " << mZZDistribution << std::endl;
                
        }
        else {
                double a =  TMath::Power(CBn/absAlpha,CBn)*exp(-0.5*absAlpha*absAlpha);
                double b = CBn/absAlpha - absAlpha;
                
                //std::cout << "power!!! a: " << a << " b: " << b << endl;
                
                mZZDistribution = a/TMath::Power(b - t, CBn);
                
        }
        //*/
        
        
        //std::cout << "t: " << t << " absAlpha: " << absAlpha << std::endl;
        
        //double final = mZstarDistribution*acceptance;
        double final = mZstarDistribution*acceptance*mZZDistribution;
        if (final <= 0) final = 1e-12;
        
        return final;
}

---

Member Data Documentation

RooRealProxy Roo4lMasses2D::CBalpha [protected]

Definition at line 341 of file HZZ4LRooPdfs.h.

Referenced by evaluate().

RooRealProxy Roo4lMasses2D::CBmean [protected]

Definition at line 339 of file HZZ4LRooPdfs.h.

Referenced by evaluate().

RooRealProxy Roo4lMasses2D::CBn [protected]

Definition at line 342 of file HZZ4LRooPdfs.h.

Referenced by evaluate().

RooRealProxy Roo4lMasses2D::CBwidth [protected]

Definition at line 340 of file HZZ4LRooPdfs.h.

Referenced by evaluate().

RooRealProxy Roo4lMasses2D::Gamma [protected]

Definition at line 335 of file HZZ4LRooPdfs.h.

Referenced by evaluate().

RooRealProxy Roo4lMasses2D::mZ [protected]

Definition at line 333 of file HZZ4LRooPdfs.h.

Referenced by evaluate().

RooRealProxy Roo4lMasses2D::mZstar [protected]

Definition at line 332 of file HZZ4LRooPdfs.h.

Referenced by evaluate().

RooRealProxy Roo4lMasses2D::mZZ [protected]

Definition at line 334 of file HZZ4LRooPdfs.h.

Referenced by evaluate().

RooRealProxy Roo4lMasses2D::p0 [protected]

Definition at line 336 of file HZZ4LRooPdfs.h.

Referenced by evaluate().

RooRealProxy Roo4lMasses2D::p1 [protected]

Definition at line 337 of file HZZ4LRooPdfs.h.

Referenced by evaluate().

RooRealProxy Roo4lMasses2D::p2 [protected]

Definition at line 338 of file HZZ4LRooPdfs.h.

Referenced by evaluate().