P4IPtCotThPhiMBase Class Reference

#include <P4IPtCotThPhiMBase.h>

Inheritance diagram for P4IPtCotThPhiMBase:

Collaboration diagram for P4IPtCotThPhiMBase:

Public Types
enum	Kind {   P4EETAPHIM, P4IPTCOTTHPHIM, P4PTETAPHIM, P4PXPYPZE,   UNKNOWN }

Public Member Functions
virtual	~P4IPtCotThPhiMBase ()
	virtual destructor needed by Pool More...
virtual double	e () const
	energy More...
virtual double	eta () const
	pseudo rapidity More...
virtual double	px () const
	x component of momentum More...
virtual double	py () const
	y component of momentum More...
virtual double	pz () const
	z component of momentum More...
virtual double	et () const
	transverse energy defined to be e*sin(theta) More...
virtual double	m2 () const
	mass squared More...
virtual double	p () const
	momentum magnitude More...
virtual double	p2 () const
	square of momentum magnitude More...
virtual double	pt () const
	transverse momentum More...
virtual double	rapidity () const
	rapidity More...
virtual double	cosPhi () const
	cosinus phi More...
virtual double	sinPhi () const
	sinus phi More...
virtual double	tanTh () const
	tan theta More...
virtual double	cosTh () const
	cosinus theta More...
virtual double	sinTh () const
	sinus theta More...
virtual CLHEP::HepLorentzVector	hlv () const
	CLHEP HepLorentzVector. More...
virtual const I4MomentumError *	errors () const
	Access to errors, if available; returns 0 if no errors. More...
virtual void	set4Mom (const I4Momentum &theI4Mom)
	set all 4-mom from another I4Momentum reference DUMMY IMPLEMENTATION More...
virtual void	set4Mom (const I4Momentum *const theI4Mom)
	set all 4-mom from another I4Momentum pointer DUMMY IMPLEMENTATION More...
virtual void	set4Mom (const CLHEP::HepLorentzVector &theHlv)
	set all 4-mom from a CLHEP HepLorentzVector DUMMY IMPLEMENTATION More...
I4Momentum::Kind	kind () const
	tells what kind of P4XYZT this is More...
virtual std::ostream &	dump (std::ostream &out) const
	Print I4Momentum content. More...
virtual double	m () const =0
	mass More...
virtual double	phi () const =0
	phi in [-pi,pi[ More...
virtual double	iPt () const =0
	inverse of transverse momentum More...
virtual double	cotTh () const =0
	cottan theta More...

Detailed Description

P4IPtCotThPhiMBase is a base class for classes with 4-momentum behavior, for which 1/Pt, cottan(tehta), phi and M are natural parameters, which is typically the case of some (not all!) tracking classes. Any class deriving from it should implement iPt(), cotTh(), phi(), m()

Author

David Rousseau rouss.nosp@m.eau@.nosp@m.lal.i.nosp@m.n2p3.nosp@m..fr

Definition at line 27 of file P4IPtCotThPhiMBase.h.

Member Enumeration Documentation

Kind

enum I4Momentum::Kind

inherited

Enumerator
P4EETAPHIM
P4IPTCOTTHPHIM
P4PTETAPHIM
P4PXPYPZE
UNKNOWN

Definition at line 33 of file I4Momentum.h.

{ P4EETAPHIM, P4IPTCOTTHPHIM, P4PTETAPHIM, P4PXPYPZE, UNKNOWN };

Constructor & Destructor Documentation

~P4IPtCotThPhiMBase()

P4IPtCotThPhiMBase::~P4IPtCotThPhiMBase ( )

virtual

virtual destructor needed by Pool

Definition at line 9 of file P4IPtCotThPhiMBase.cxx.

{}

Member Function Documentation

cosPhi()

double P4IPtCotThPhiMBase::cosPhi ( ) const

virtual

cosinus phi

Implements I4Momentum.

Definition at line 103 of file P4IPtCotThPhiMBase.cxx.

{
 return std::cos(this->phi());
}

cosTh()

double P4IPtCotThPhiMBase::cosTh ( ) const

virtual

cosinus theta

Implements I4Momentum.

Definition at line 47 of file P4IPtCotThPhiMBase.cxx.

{ 
  const double theCotTh=this->cotTh();
  const double theCotTh2=theCotTh*theCotTh;
  const double theCosTh=std::sqrt(theCotTh2/(1.+theCotTh2));
  if (theCotTh>=0) {
    return theCosTh;
  }
  else{
    return -theCosTh;
  }  
}

cotTh()

virtual double I4Momentum::cotTh ( ) const

pure virtualinherited

cottan theta

Implemented in CaloCell, ParticleSigStateImpl< INavigable_t, I4Momentum_t, IParticle_t >, ParticleImpl< INavigable_t, I4Momentum_t, IParticle_t >, Nav4MomWrapper< Navigable_t, P4Momentum_t >, P4Impl< P4Mom_t >, P4IPtCotThPhiM, P4EEtaPhiMBase, P4PtEtaPhiMBase, and P4PxPyPzEBase.

dump()

std::ostream & P4IPtCotThPhiMBase::dump ( std::ostream &  out ) const

virtual

Print I4Momentum content.

Implements I4Momentum.

Definition at line 126 of file P4IPtCotThPhiMBase.cxx.

{
 
   std::stringstream outx;
   outx << "[ipt,cotTh,phi,m] ="
         << std::right << std::scientific << std::setprecision(8) 
         << std::setw(16) << this->iPt()
         << std::setw(16) << this->cotTh()
         << std::setw(16) << this->phi()
         << std::setw(16) << this->m();
 
  out<<outx.str();
  
  return out;
}

e()

double P4IPtCotThPhiMBase::e ( ) const

virtual

energy

Implements I4Momentum.

Definition at line 61 of file P4IPtCotThPhiMBase.cxx.

{ 
  const double theM=this->m();
  const double theP=this->p();
  if (theM==0.) return theP ;
        else return std::sqrt(theP*theP+theM*theM); 
}

errors()

const I4MomentumError * P4IPtCotThPhiMBase::errors ( ) const

virtual

Access to errors, if available; returns 0 if no errors.

Implements I4Momentum.

Reimplemented in P4IPtCotThPhiM.

Definition at line 142 of file P4IPtCotThPhiMBase.cxx.

{
  return 0;
}

et()

double P4IPtCotThPhiMBase::et ( ) const

virtual

transverse energy defined to be e*sin(theta)

Implements I4Momentum.

Definition at line 69 of file P4IPtCotThPhiMBase.cxx.

{ 
  const double theCotTh=this->cotTh();
  return this->e()/std::sqrt(1+theCotTh*theCotTh);
}

eta()

double P4IPtCotThPhiMBase::eta ( ) const

virtual

pseudo rapidity

Implements I4Momentum.

Definition at line 76 of file P4IPtCotThPhiMBase.cxx.

{
  const double theCotTh=this->cotTh();
  const double aux=std::sqrt(1+theCotTh*theCotTh);
  return -0.5*log((aux-theCotTh)/(aux+theCotTh));
 }

hlv()

CLHEP::HepLorentzVector P4IPtCotThPhiMBase::hlv ( ) const

virtual

CLHEP HepLorentzVector.

Implements I4Momentum.

Definition at line 113 of file P4IPtCotThPhiMBase.cxx.

{ 
  //minimize the number of calculation and dereference
  const double thePt=this->pt();  
  const double theM=this->m();  
  const double thePx=thePt*this->cosPhi();
  const double thePy=thePt*this->sinPhi();
  const double thePz=thePt*this->cotTh();
  const double theE=std::sqrt(thePt*thePt+thePz*thePz+theM*theM);
 
  return CLHEP::HepLorentzVector(thePx,thePy,thePz,theE);
}

iPt()

virtual double I4Momentum::iPt ( ) const

pure virtualinherited

inverse of transverse momentum

Implemented in ParticleSigStateImpl< INavigable_t, I4Momentum_t, IParticle_t >, ParticleImpl< INavigable_t, I4Momentum_t, IParticle_t >, Nav4MomWrapper< Navigable_t, P4Momentum_t >, P4Impl< P4Mom_t >, P4IPtCotThPhiM, P4EEtaPhiMBase, P4PtEtaPhiMBase, and P4PxPyPzEBase.

kind()

I4Momentum::Kind P4IPtCotThPhiMBase::kind ( ) const

inlinevirtual

tells what kind of P4XYZT this is

Implements I4Momentum.

Definition at line 60 of file P4IPtCotThPhiMBase.h.

{ return I4Momentum::P4IPTCOTTHPHIM; };

m()

virtual double I4Momentum::m ( ) const

pure virtualinherited

mass

Implemented in TileTrackMuFeature, CombinedMuonFeature, IsoMuonFeature, TrigMuonClusterFeature, CaloTower, CaloCell, CaloVertexedCell, CaloCluster, ParticleSigStateImpl< INavigable_t, I4Momentum_t, IParticle_t >, ParticleImpl< INavigable_t, I4Momentum_t, IParticle_t >, Nav4MomWrapper< Navigable_t, P4Momentum_t >, Muon_ROI, EmTau_ROI, P4Impl< P4Mom_t >, Jet_ROI, P4PtEtaPhiM, P4EEtaPhiM, P4IPtCotThPhiM, TrigT2Jet, and P4PxPyPzEBase.

m2()

double P4IPtCotThPhiMBase::m2 ( ) const

virtual

mass squared

Implements I4Momentum.

Definition at line 31 of file P4IPtCotThPhiMBase.cxx.

                                    {
  const double theM = this->m();
  return theM*theM;
}

p()

double P4IPtCotThPhiMBase::p ( ) const

virtual

momentum magnitude

Implements I4Momentum.

Definition at line 18 of file P4IPtCotThPhiMBase.cxx.

{ 
  const double theCotTh=this->cotTh();
  return std::sqrt(1+theCotTh*theCotTh)/this->iPt() ;
}

p2()

double P4IPtCotThPhiMBase::p2 ( ) const

virtual

square of momentum magnitude

Implements I4Momentum.

Definition at line 24 of file P4IPtCotThPhiMBase.cxx.

{ 
  const double theCotTh=this->cotTh();
  const double theI_Pt=this->iPt();
  return (1+theCotTh*theCotTh)/(theI_Pt*theI_Pt) ;
}

phi()

virtual double I4Momentum::phi ( ) const

pure virtualinherited

phi in [-pi,pi[

Implemented in TileTrackMuFeature, CombinedMuonFeature, IsoMuonFeature, TrigMuonClusterFeature, CaloTower, CaloCell, CaloVertexedCell, CaloCluster, ParticleSigStateImpl< INavigable_t, I4Momentum_t, IParticle_t >, ParticleImpl< INavigable_t, I4Momentum_t, IParticle_t >, Nav4MomWrapper< Navigable_t, P4Momentum_t >, P4Impl< P4Mom_t >, Muon_ROI, EmTau_ROI, Jet_ROI, P4PtEtaPhiM, P4EEtaPhiM, P4IPtCotThPhiM, TrigT2Jet, and P4PxPyPzEBase.

pt()

double P4IPtCotThPhiMBase::pt ( ) const

virtual

transverse momentum

Implements I4Momentum.

Definition at line 12 of file P4IPtCotThPhiMBase.cxx.

   {
     return 1./this->iPt();
   }

px()

double P4IPtCotThPhiMBase::px ( ) const

virtual

x component of momentum

Implements I4Momentum.

Definition at line 91 of file P4IPtCotThPhiMBase.cxx.

   { return this->cosPhi()/this->iPt();
   }

py()

double P4IPtCotThPhiMBase::py ( ) const

virtual

y component of momentum

Implements I4Momentum.

Definition at line 95 of file P4IPtCotThPhiMBase.cxx.

   { return this->sinPhi()/this->iPt();
   }

pz()

double P4IPtCotThPhiMBase::pz ( ) const

virtual

z component of momentum

Implements I4Momentum.

Definition at line 99 of file P4IPtCotThPhiMBase.cxx.

   { return this->cotTh()/this->iPt();
   }

rapidity()

double P4IPtCotThPhiMBase::rapidity ( ) const

virtual

rapidity

Implements I4Momentum.

Definition at line 84 of file P4IPtCotThPhiMBase.cxx.

  {
    const double theE=this->e();
    const double thePz=this->pz();
    return 0.5*std::log((theE+thePz)/(theE-thePz));
   }

set4Mom() [1/3]

void P4IPtCotThPhiMBase::set4Mom ( const CLHEP::HepLorentzVector &  theHlv )

virtual

set all 4-mom from a CLHEP HepLorentzVector DUMMY IMPLEMENTATION

Implements I4Momentum.

Reimplemented in P4IPtCotThPhiM.

Definition at line 161 of file P4IPtCotThPhiMBase.cxx.

{
  std::cout << "FATAL ERROR dummy P4IPtCotThPhiMBase::set4Mom called " << std::endl ;
  std::abort();
}

set4Mom() [2/3]

void P4IPtCotThPhiMBase::set4Mom ( const I4Momentum &  theI4Mom )

virtual

set all 4-mom from another I4Momentum reference DUMMY IMPLEMENTATION

Implements I4Momentum.

Reimplemented in P4IPtCotThPhiM.

Definition at line 148 of file P4IPtCotThPhiMBase.cxx.

{ 
  std::cout << "FATAL ERROR dummy P4IPtCotThPhiMBase::set4Mom called " << std::endl ;
  std::abort();
}

set4Mom() [3/3]

void P4IPtCotThPhiMBase::set4Mom ( const I4Momentum *const  theI4Mom )

virtual

set all 4-mom from another I4Momentum pointer DUMMY IMPLEMENTATION

Implements I4Momentum.

Reimplemented in P4IPtCotThPhiM.

Definition at line 154 of file P4IPtCotThPhiMBase.cxx.

{ 
  std::cout << "FATAL ERROR dummy P4IPtCotThPhiMBase::set4Mom called " << std::endl ;
  std::abort();
 
}

sinPhi()

double P4IPtCotThPhiMBase::sinPhi ( ) const

virtual

sinus phi

Implements I4Momentum.

Definition at line 108 of file P4IPtCotThPhiMBase.cxx.

{
 return std::sin(this->phi());
}

sinTh()

double P4IPtCotThPhiMBase::sinTh ( ) const

virtual

sinus theta

Implements I4Momentum.

Definition at line 41 of file P4IPtCotThPhiMBase.cxx.

{ 
  const double theCotTh=this->cotTh();
  return 1./std::sqrt(1+theCotTh*theCotTh) ;
}

tanTh()

double P4IPtCotThPhiMBase::tanTh ( ) const

virtual

tan theta

Implements I4Momentum.

Definition at line 36 of file P4IPtCotThPhiMBase.cxx.

{ 
  return 1./this->cotTh() ;
}

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

• P4IPtCotThPhiMBase.h
• P4IPtCotThPhiMBase.cxx