#include <RhoEventShape.h>

Inheritance diagram for RhoEventShape:

Public Member Functions
	RhoEventShape ()

	RhoEventShape (RhoCandList &l)

virtual	~RhoEventShape ()

TLorentzVector	P4 ()

Double_t	M ()

Double_t	E ()

Double_t	P ()

Double_t	Pt ()

Double_t	Psum ()

Private Attributes
TLorentzVector	fTot4Mom

Double_t	fTotM

Double_t	fTotE

Double_t	fTotP

Double_t	fTotPt

Double_t	fTotAbsMom

Detailed Description

Definition at line 14 of file RhoEventShape.h.

Constructor & Destructor Documentation

RhoEventShape::RhoEventShape ( )

Definition at line 17 of file RhoEventShape.cxx.

References fTot4Mom, fTotAbsMom, fTotE, fTotM, fTotP, and fTotPt.

 {
   fTot4Mom = TLorentzVector(0.,0.,0.,0.);
   //_fw2 = 0;
   fTotM = 0;
   fTotE = 0;
   fTotP = 0;
   fTotPt = 0;
   fTotAbsMom = 0;
 }

RhoEventShape::RhoEventShape ( RhoCandList & l )

Definition at line 28 of file RhoEventShape.cxx.

References c1, fTot4Mom, fTotAbsMom, fTotE, fTotM, fTotP, fTotPt, RhoCandList::Get(), RhoCandList::GetNumberOfTracks(), i, p1, RhoCandidate::P3(), and RhoCandidate::P4().

 {
   fTot4Mom = TLorentzVector(0.,0.,0.,0.);
   fTotAbsMom = 0;
   //Double_t fw2n = 0;
   Int_t nl = l.GetNumberOfTracks();
   for (Int_t i=0; i<nl; ++i) {
     RhoCandidate* c1 = l.Get(i);
     TVector3 p1 = c1->P3();
     fTotAbsMom += p1.Mag();
     fTot4Mom += c1->P4();
 //    for (Int_t j=i; j<nl; ++j) {
 //      RhoCandidate *c2 = l.Get(j);
 //      TVector3 p2 = c2->P3();
 //      Double_t cosal = p1.Dot(p2) /(p1.Mag()*p2.Mag());
 //      Double_t legendre2 = 3.*cosal*cosal - 1.;
 //      if (i == j) legendre2 = legendre2 / 2.;
 //      fw2n += legendre2 * p1.Mag() * p2.Mag();
 //    }
   }
   //_fw2 = fTotabsmom>0 ? fw2n/(fTotabsmom*fTotabsmom) : 0.0;
   fTotM = fTot4Mom.M();
   fTotE = fTot4Mom.E();
   fTotP = fTot4Mom.Rho();
   fTotPt = fTot4Mom.Perp();
 }