RooRapiditySig Class Reference

#include <RooRapiditySig.h>

Inheritance diagram for RooRapiditySig:

Collaboration diagram for RooRapiditySig:

Public Member Functions
	RooRapiditySig ()
	RooRapiditySig (const char *name, const char *title, RooAbsReal &_Y, RooAbsReal &_m, RooAbsReal &_sqrtS)
	RooRapiditySig (const RooRapiditySig &other, const char *name=0)
virtual TObject *	clone (const char *newname) const
virtual	~RooRapiditySig ()

Protected Member Functions
Double_t	evaluate () const

Protected Attributes
RooRealProxy	Y
RooRealProxy	m
RooRealProxy	sqrtS

Detailed Description

Definition at line 16 of file RooRapiditySig.h.

Constructor & Destructor Documentation

RooRapiditySig() [1/3]

RooRapiditySig::RooRapiditySig ( )

inline

Definition at line 22 of file RooRapiditySig.h.

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

RooRapiditySig() [2/3]

RooRapiditySig::RooRapiditySig	(	const char *	name,
		const char *	title,
		RooAbsReal &	_Y,
		RooAbsReal &	_m,
		RooAbsReal &	_sqrtS
	)

Definition at line 20 of file RooRapiditySig.cc.

                                                                                   :
RooAbsPdf(name,title), 
Y("Y","Y",this,_Y),
m("m","m",this,_m),
sqrtS("sqrtS","sqrtS",this,_sqrtS)
{ 
} 

RooRapiditySig() [3/3]

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

Definition at line 32 of file RooRapiditySig.cc.

                                                                            :  
RooAbsPdf(other,name), 
Y("Y",this,other.Y),
m("m",this,other.m),
sqrtS("sqrtS",this,other.sqrtS)
{ 
} 

~RooRapiditySig()

virtual RooRapiditySig::~RooRapiditySig ( )

inlinevirtual

Definition at line 27 of file RooRapiditySig.h.

:
    

Member Function Documentation

clone()

virtual TObject* RooRapiditySig::clone ( const char *  newname ) const

inlinevirtual

Definition at line 26 of file RooRapiditySig.h.

:
    

evaluate()

Double_t RooRapiditySig::evaluate ( ) const

protected

Definition at line 42 of file RooRapiditySig.cc.

{ 
        Double_t s0 = sqrtS*sqrtS;
    Double_t s = m*m;
    Double_t Q = m;
    Double_t xa = exp(Y)*sqrt(s/s0);
    Double_t xb = exp(-Y)*sqrt(s/s0);
 
    Double_t weightg = 1.0;
 
    //gluon params
    Double_t g0par0 = 0.2282; Double_t g0par1 = -0.0002252; Double_t g0par2 = 1.383e-07;
    Double_t g1par0 = 0.01968; Double_t g1par1 = -0.0002993; Double_t g1par2 = 1.986e-07;
    Double_t g2par0 = 3.624; Double_t g2par1 = -0.003164; Double_t g2par2 = 1.941e-06;
    Double_t g3par0 = -0.578; Double_t g3par1 = -0.0003; Double_t g3par2 = 1.828e-07;
    Double_t g4par0 = -7.515; Double_t g4par1 = -0.001355; Double_t g4par2 = 8.199e-07;
 
    Double_t gluon0 = g0par0 + g0par1*Q + g0par2*Q*Q;
    Double_t gluon1 = g1par0 + g1par1*Q + g1par2*Q*Q;
    Double_t gluon2 = g2par0 + g2par1*Q + g2par2*Q*Q;
    Double_t gluon3 = g3par0 + g3par1*Q + g3par2*Q*Q;
    Double_t gluon4 = g4par0 + g4par1*Q + g4par2*Q*Q;
 
    Double_t Funcga = (gluon0+gluon1*xa+gluon2*pow(xa,2))*pow((1-xa),4)*pow(xa,gluon3)*exp(1.0+gluon4*xa);
    Double_t Funcgb = (gluon0+gluon1*xb+gluon2*pow(xb,2))*pow((1-xb),4)*pow(xb,gluon3)*exp(1.0+gluon4*xb);
    Double_t FuncABg = Funcga*Funcgb/xa/xb;
    
    Double_t totSec = 2*m*((FuncABg)*weightg);
 
    if(( m <= 600. && TMath::Abs(Y) > 20*pow(m,-0.32)) || ( m > 600. && TMath::Abs(Y) > 21*pow(m,-0.34)))
      {
        //Find totSec when mZZ, Y=0
        Double_t xa0 = sqrt(s/s0); //at Y=0 xa=xb
        //if xa=xb then Funcga=Funcgb
        Funcga = (gluon0+gluon1*xa0+gluon2*pow(xa0,2))*pow((1-xa0),4)*pow(xa0,gluon3)*exp(1.0+gluon4*xa0);
        FuncABg = Funcga*Funcga/xa0/xa0;
        Double_t totSec0 = 2*m*((FuncABg)*weightg);
        totSec = 1.e-5*totSec0;
      }
 
        if (totSec <= 0.) totSec = 0.00001; 
        return totSec;                                          
       
    
    
} 

Member Data Documentation

m

RooRealProxy RooRapiditySig::m

protected

Definition at line 33 of file RooRapiditySig.h.

sqrtS

RooRealProxy RooRapiditySig::sqrtS

protected

Definition at line 34 of file RooRapiditySig.h.

Y

RooRealProxy RooRapiditySig::Y

protected

Definition at line 32 of file RooRapiditySig.h.

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

• MELA/interface/RooRapiditySig.h
• MELA/src/RooRapiditySig.cc