P4PtEtaPhiMBase is a base class for classes with 4-momentum behavior, for which pt, eta, phi and M are natural parameters, which is typically the case for a ger object. More...

#include <P4PtEtaPhiMBase.h>

Inheritance diagram for P4PtEtaPhiMBase:

Collaboration diagram for P4PtEtaPhiMBase:

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

Public Member Functions
virtual	~P4PtEtaPhiMBase ()
	virtual destructor needed by pool
virtual double	px () const
	x component of momentum
virtual double	py () const
	y component of momentum
virtual double	pz () const
	z component of momentum
virtual double	e () const
	energy
virtual double	p () const
	magnitude of 3-momentum.
virtual double	p2 () const
	square of momentum magnitude
virtual double	m2 () const
	mass squared
virtual double	et () const
	transverse energy defined to be e*sin(theta)
virtual double	iPt () const
	inverse of transverse momentum
virtual double	rapidity () const
	rapidity
virtual double	cosPhi () const
	cosinus phi
virtual double	sinPhi () const
	sinus phi
virtual double	cotTh () const
	cottan theta
virtual double	cosTh () const
	cosinus theta
virtual double	sinTh () const
	sinus theta
virtual double	tanTh () const
	tan theta
virtual CLHEP::HepLorentzVector	hlv () const
	HepLorentzVector Special implementation from Frank Paige : if negative energy, points in opposite direction but eta and phi still the same.
virtual const I4MomentumError *	errors () const
	Access to errors, if available; returns 0 if no errors.
virtual void	set4Mom (const I4Momentum &theI4Mom)
	set all 4-mom from another I4Momentum reference DUMMY IMPLEMENTATION
virtual void	set4Mom (const I4Momentum *const theI4Mom)
	set all 4-mom from another I4Momentum pointer DUMMY IMPLEMENTATION
virtual void	set4Mom (const CLHEP::HepLorentzVector &theHlv)
	set all 4-mom from a CLHEP HepLorentzVector DUMMY IMPLEMENTATION
I4Momentum::Kind	kind () const
	tells what kind of P4XYZT this is
virtual std::ostream &	dump (std::ostream &out) const
	Print `I4Momentum` content.
virtual double	m () const =0
	mass
virtual double	eta () const =0
	pseudo rapidity
virtual double	phi () const =0
	phi in [-pi,pi[
virtual double	pt () const =0
	transverse momentum

Detailed Description

P4PtEtaPhiMBase is a base class for classes with 4-momentum behavior, for which pt, eta, phi and M are natural parameters, which is typically the case for a ger object.

Any class deriving from it should implement pt(), eta(), phi(), m().

Author: Olga Igonkina olya@.nosp@m.cern.nosp@m..ch

Definition at line 25 of file P4PtEtaPhiMBase.h.

Member Enumeration Documentation

◆ Kind

enum I4Momentum::Kind

inherited

Enumerator
P4EETAPHIM
P4IPTCOTTHPHIM
P4PTETAPHIM
P4PXPYPZE
UNKNOWN

Definition at line 33 of file I4Momentum.h.

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

I4Momentum::P4PTETAPHIM

@ P4PTETAPHIM

Definition I4Momentum.h:33

I4Momentum::P4EETAPHIM

@ P4EETAPHIM

Definition I4Momentum.h:33

I4Momentum::P4IPTCOTTHPHIM

@ P4IPTCOTTHPHIM

Definition I4Momentum.h:33

I4Momentum::UNKNOWN

@ UNKNOWN

Definition I4Momentum.h:33

I4Momentum::P4PXPYPZE

@ P4PXPYPZE

Definition I4Momentum.h:33

Constructor & Destructor Documentation

◆ ~P4PtEtaPhiMBase()

P4PtEtaPhiMBase::~P4PtEtaPhiMBase ( )

virtual

virtual destructor needed by pool

Definition at line 10 of file P4PtEtaPhiMBase.cxx.

11{}

Member Function Documentation

◆ cosPhi()

double P4PtEtaPhiMBase::cosPhi ( ) const

virtual

cosinus phi

Implements I4Momentum.

Definition at line 55 of file P4PtEtaPhiMBase.cxx.

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

◆ cosTh()

double P4PtEtaPhiMBase::cosTh ( ) const

virtual

cosinus theta

Implements I4Momentum.

Definition at line 70 of file P4PtEtaPhiMBase.cxx.

{
 return std::tanh(this->eta());
}

◆ cotTh()

double P4PtEtaPhiMBase::cotTh ( ) const

virtual

cottan theta

Implements I4Momentum.

Definition at line 65 of file P4PtEtaPhiMBase.cxx.

{
 return std::sinh(this->eta());
}

◆ dump()

std::ostream & P4PtEtaPhiMBase::dump ( std::ostream & out ) const

virtual

Print I4Momentum content.

Implements I4Momentum.

Definition at line 147 of file P4PtEtaPhiMBase.cxx.

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

◆ e()

double P4PtEtaPhiMBase::e ( ) const

virtual

energy

Implements I4Momentum.

Definition at line 13 of file P4PtEtaPhiMBase.cxx.

{
  const double theMass = this->m();
  const double thePt   = this->pt();
  const double thePz   = this->pz();
 
  //DR from Frank Paige
  // if negative pt point in the opposite direction
  // BUT eta and phi still the same !!!
 
    double eSign = (thePt >= 0.) ? +1. : -1.;
    return eSign*std::sqrt(thePt*thePt + thePz*thePz +  theMass*theMass);
}

◆ errors()

const I4MomentumError * P4PtEtaPhiMBase::errors ( ) const

virtual

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

Implements I4Momentum.

Reimplemented in P4PtEtaPhiM.

Definition at line 162 of file P4PtEtaPhiMBase.cxx.

{
  return 0;
}

◆ et()

double P4PtEtaPhiMBase::et ( ) const

virtual

transverse energy defined to be e*sin(theta)

Implements I4Momentum.

Definition at line 101 of file P4PtEtaPhiMBase.cxx.

   {
     return this->e()*this->sinTh();
   }

◆ eta()

virtual double I4Momentum::eta ( ) const

pure virtualinherited

pseudo rapidity

Implemented in CaloCell, CaloCluster, CaloTower, CaloVertexedCell, CombinedMuonFeature, EmTau_ROI, IsoMuonFeature, Jet_ROI, Muon_ROI, Nav4MomWrapper< Navigable_t, P4Momentum_t >, Nav4MomWrapper< Navigable< DataVector< INavigable4Momentum >, double, std::vector< std::pair< ElementLink< DataVector< INavigable4Momentum > >, double > > >, P4ImplPxPyPzE >, P4EEtaPhiM, P4Impl< P4Mom_t >, P4Impl< P4ImplEEtaPhiM >, P4Impl< P4ImplIPtCotThPhiM >, P4Impl< P4ImplPtEtaPhiM >, P4Impl< P4ImplPxPyPzE >, P4IPtCotThPhiMBase, P4PtEtaPhiM, P4PxPyPzEBase, ParticleImpl< INavigable_t, I4Momentum_t, IParticle_t >, ParticleImpl< ::Analysis::MuonNavigation, ::P4ImplIPtCotThPhiM >, ParticleImpl< ::Analysis::TauJetNavigation, ::P4ImplEEtaPhiM >, ParticleImpl< CompositeParticleNavigation, P4ImplPxPyPzE, ParticleEvent::Base >, ParticleImpl< egammaNavigation, P4ImplEEtaPhiM >, ParticleImpl< INavigable_t, I4Momentum_t, IParticle_t >, ParticleImpl< Navigable< DataVector< INavigable4Momentum >, double, std::vector< std::pair< ElementLink< DataVector< INavigable4Momentum > >, double > > >, P4ImplPxPyPzE, ParticleEvent::Base >, ParticleImpl< NavigableTerminalNode, P4ImplEEtaPhiM, ParticleEvent::Base >, ParticleImpl< NavigableTerminalNode, P4ImplIPtCotThPhiM, ParticleEvent::Base >, ParticleImpl< NavigableTerminalNode, P4ImplPxPyPzE, ParticleEvent::Base >, ParticleImpl< NavigableTerminalNode, P4PtEtaPhiM >, ParticleImpl< NeutrinoNavigation, P4ImplPxPyPzE >, ParticleImpl< TruthParticleNavigation, TruthParticleMomentum, TruthParticleBase >, ParticleSigStateImpl< INavigable_t, I4Momentum_t, IParticle_t >, ParticleSigStateImpl< INavigable_t, I4Momentum_t, IParticle_t >, ParticleSigStateImpl< Navigable< DataVector< INavigable4Momentum >, double, std::vector< std::pair< ElementLink< DataVector< INavigable4Momentum > >, double > > >, P4ImplPxPyPzE, ParticleEvent::Base >, ParticleSigStateImpl< Navigable< INavigable4MomentumCollection, double >, P4ImplPxPyPzE >, ParticleSigStateImpl< Navigable< INavigable4MomentumCollection, double >, P4ImplPxPyPzE, ParticleEvent::Base >, TileTrackMuFeature, TrigMuonClusterFeature, and TrigT2Jet.

◆ hlv()

CLHEP::HepLorentzVector P4PtEtaPhiMBase::hlv ( ) const

virtual

HepLorentzVector Special implementation from Frank Paige : if negative energy, points in opposite direction but eta and phi still the same.

Implements I4Momentum.

Definition at line 128 of file P4PtEtaPhiMBase.cxx.

{
  //minimize the number of calculation and dereference
  const double theM = this->m();
  // note that pt can have negative sign : then it points in opposite direction but eta and phi are still on the same side
  const double thePt = this->pt();  
  
 
  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()

double P4PtEtaPhiMBase::iPt ( ) const

virtual

inverse of transverse momentum

Implements I4Momentum.

Definition at line 106 of file P4PtEtaPhiMBase.cxx.

107 { return 1./this->pt();

108 }

◆ kind()

I4Momentum::Kind P4PtEtaPhiMBase::kind ( ) const

inlinevirtual

tells what kind of P4XYZT this is

Implements I4Momentum.

Definition at line 64 of file P4PtEtaPhiMBase.h.

64{ return I4Momentum::P4PTETAPHIM; };

◆ m()

virtual double I4Momentum::m ( ) const

pure virtualinherited

mass

Implemented in CaloCell, CaloCluster, CaloTower, CaloVertexedCell, CombinedMuonFeature, EmTau_ROI, IsoMuonFeature, Jet_ROI, Muon_ROI, Nav4MomWrapper< Navigable_t, P4Momentum_t >, Nav4MomWrapper< Navigable< DataVector< INavigable4Momentum >, double, std::vector< std::pair< ElementLink< DataVector< INavigable4Momentum > >, double > > >, P4ImplPxPyPzE >, P4EEtaPhiM, P4Impl< P4Mom_t >, P4Impl< P4ImplEEtaPhiM >, P4Impl< P4ImplIPtCotThPhiM >, P4Impl< P4ImplPtEtaPhiM >, P4Impl< P4ImplPxPyPzE >, P4IPtCotThPhiM, P4PtEtaPhiM, P4PxPyPzEBase, ParticleImpl< INavigable_t, I4Momentum_t, IParticle_t >, ParticleImpl< ::Analysis::MuonNavigation, ::P4ImplIPtCotThPhiM >, ParticleImpl< ::Analysis::TauJetNavigation, ::P4ImplEEtaPhiM >, ParticleImpl< CompositeParticleNavigation, P4ImplPxPyPzE, ParticleEvent::Base >, ParticleImpl< egammaNavigation, P4ImplEEtaPhiM >, ParticleImpl< INavigable_t, I4Momentum_t, IParticle_t >, ParticleImpl< Navigable< DataVector< INavigable4Momentum >, double, std::vector< std::pair< ElementLink< DataVector< INavigable4Momentum > >, double > > >, P4ImplPxPyPzE, ParticleEvent::Base >, ParticleImpl< NavigableTerminalNode, P4ImplEEtaPhiM, ParticleEvent::Base >, ParticleImpl< NavigableTerminalNode, P4ImplIPtCotThPhiM, ParticleEvent::Base >, ParticleImpl< NavigableTerminalNode, P4ImplPxPyPzE, ParticleEvent::Base >, ParticleImpl< NavigableTerminalNode, P4PtEtaPhiM >, ParticleImpl< NeutrinoNavigation, P4ImplPxPyPzE >, ParticleImpl< TruthParticleNavigation, TruthParticleMomentum, TruthParticleBase >, ParticleSigStateImpl< INavigable_t, I4Momentum_t, IParticle_t >, ParticleSigStateImpl< INavigable_t, I4Momentum_t, IParticle_t >, ParticleSigStateImpl< Navigable< DataVector< INavigable4Momentum >, double, std::vector< std::pair< ElementLink< DataVector< INavigable4Momentum > >, double > > >, P4ImplPxPyPzE, ParticleEvent::Base >, ParticleSigStateImpl< Navigable< INavigable4MomentumCollection, double >, P4ImplPxPyPzE >, ParticleSigStateImpl< Navigable< INavigable4MomentumCollection, double >, P4ImplPxPyPzE, ParticleEvent::Base >, TileTrackMuFeature, TrigMuonClusterFeature, and TrigT2Jet.

◆ m2()

double P4PtEtaPhiMBase::m2 ( ) const

virtual

mass squared

Implements I4Momentum.

Definition at line 50 of file P4PtEtaPhiMBase.cxx.

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

◆ p()

double P4PtEtaPhiMBase::p ( ) const

virtual

magnitude of 3-momentum.

Special implementation from Frank Paige : if negative energy p is negative but eta and phi still the same.

Implements I4Momentum.

Definition at line 27 of file P4PtEtaPhiMBase.cxx.

{ 
  const double thePt = this->pt();
  const double thePz = this->pz();
 
  //DR from Frank Paige
  // if negative pt point in the opposite direction
  // BUT eta and phi still the same !!!
 
  double eSign = (thePt >= 0.) ? +1. : -1.;
  return eSign*std::sqrt(thePt*thePt + thePz*thePz);
}

◆ p2()

double P4PtEtaPhiMBase::p2 ( ) const

virtual

square of momentum magnitude

Implements I4Momentum.

Definition at line 40 of file P4PtEtaPhiMBase.cxx.

{ 
  /* This method has been implemented so as to give the same as would be obtained from pow((this->p()),2) with this->p() implemented according to Frank Paige's algorithm above. */
 
  const double thePt = this->pt();
  const double thePz = this->pz();
 
  return thePt*thePt + thePz*thePz;
}

◆ phi()

virtual double I4Momentum::phi ( ) const

pure virtualinherited

phi in [-pi,pi[

Implemented in CaloCell, CaloCluster, CaloTower, CaloVertexedCell, CombinedMuonFeature, EmTau_ROI, IsoMuonFeature, Jet_ROI, Muon_ROI, Nav4MomWrapper< Navigable_t, P4Momentum_t >, Nav4MomWrapper< Navigable< DataVector< INavigable4Momentum >, double, std::vector< std::pair< ElementLink< DataVector< INavigable4Momentum > >, double > > >, P4ImplPxPyPzE >, P4EEtaPhiM, P4Impl< P4Mom_t >, P4Impl< P4ImplEEtaPhiM >, P4Impl< P4ImplIPtCotThPhiM >, P4Impl< P4ImplPtEtaPhiM >, P4Impl< P4ImplPxPyPzE >, P4IPtCotThPhiM, P4PtEtaPhiM, P4PxPyPzEBase, ParticleImpl< INavigable_t, I4Momentum_t, IParticle_t >, ParticleImpl< ::Analysis::MuonNavigation, ::P4ImplIPtCotThPhiM >, ParticleImpl< ::Analysis::TauJetNavigation, ::P4ImplEEtaPhiM >, ParticleImpl< CompositeParticleNavigation, P4ImplPxPyPzE, ParticleEvent::Base >, ParticleImpl< egammaNavigation, P4ImplEEtaPhiM >, ParticleImpl< INavigable_t, I4Momentum_t, IParticle_t >, ParticleImpl< Navigable< DataVector< INavigable4Momentum >, double, std::vector< std::pair< ElementLink< DataVector< INavigable4Momentum > >, double > > >, P4ImplPxPyPzE, ParticleEvent::Base >, ParticleImpl< NavigableTerminalNode, P4ImplEEtaPhiM, ParticleEvent::Base >, ParticleImpl< NavigableTerminalNode, P4ImplIPtCotThPhiM, ParticleEvent::Base >, ParticleImpl< NavigableTerminalNode, P4ImplPxPyPzE, ParticleEvent::Base >, ParticleImpl< NavigableTerminalNode, P4PtEtaPhiM >, ParticleImpl< NeutrinoNavigation, P4ImplPxPyPzE >, ParticleImpl< TruthParticleNavigation, TruthParticleMomentum, TruthParticleBase >, ParticleSigStateImpl< INavigable_t, I4Momentum_t, IParticle_t >, ParticleSigStateImpl< INavigable_t, I4Momentum_t, IParticle_t >, ParticleSigStateImpl< Navigable< DataVector< INavigable4Momentum >, double, std::vector< std::pair< ElementLink< DataVector< INavigable4Momentum > >, double > > >, P4ImplPxPyPzE, ParticleEvent::Base >, ParticleSigStateImpl< Navigable< INavigable4MomentumCollection, double >, P4ImplPxPyPzE >, ParticleSigStateImpl< Navigable< INavigable4MomentumCollection, double >, P4ImplPxPyPzE, ParticleEvent::Base >, TileTrackMuFeature, TrigMuonClusterFeature, and TrigT2Jet.

◆ pt()

virtual double I4Momentum::pt ( ) const

pure virtualinherited

transverse momentum

Implemented in CombinedMuonFeature, EmTau_ROI, IsoMuonFeature, Jet_ROI, Muon_ROI, Nav4MomWrapper< Navigable_t, P4Momentum_t >, Nav4MomWrapper< Navigable< DataVector< INavigable4Momentum >, double, std::vector< std::pair< ElementLink< DataVector< INavigable4Momentum > >, double > > >, P4ImplPxPyPzE >, P4EEtaPhiMBase, P4Impl< P4Mom_t >, P4Impl< P4ImplEEtaPhiM >, P4Impl< P4ImplIPtCotThPhiM >, P4Impl< P4ImplPtEtaPhiM >, P4Impl< P4ImplPxPyPzE >, P4IPtCotThPhiMBase, P4PtEtaPhiM, P4PxPyPzEBase, ParticleImpl< INavigable_t, I4Momentum_t, IParticle_t >, ParticleImpl< ::Analysis::MuonNavigation, ::P4ImplIPtCotThPhiM >, ParticleImpl< ::Analysis::TauJetNavigation, ::P4ImplEEtaPhiM >, ParticleImpl< CompositeParticleNavigation, P4ImplPxPyPzE, ParticleEvent::Base >, ParticleImpl< egammaNavigation, P4ImplEEtaPhiM >, ParticleImpl< INavigable_t, I4Momentum_t, IParticle_t >, ParticleImpl< Navigable< DataVector< INavigable4Momentum >, double, std::vector< std::pair< ElementLink< DataVector< INavigable4Momentum > >, double > > >, P4ImplPxPyPzE, ParticleEvent::Base >, ParticleImpl< NavigableTerminalNode, P4ImplEEtaPhiM, ParticleEvent::Base >, ParticleImpl< NavigableTerminalNode, P4ImplIPtCotThPhiM, ParticleEvent::Base >, ParticleImpl< NavigableTerminalNode, P4ImplPxPyPzE, ParticleEvent::Base >, ParticleImpl< NavigableTerminalNode, P4PtEtaPhiM >, ParticleImpl< NeutrinoNavigation, P4ImplPxPyPzE >, ParticleImpl< TruthParticleNavigation, TruthParticleMomentum, TruthParticleBase >, ParticleSigStateImpl< INavigable_t, I4Momentum_t, IParticle_t >, ParticleSigStateImpl< INavigable_t, I4Momentum_t, IParticle_t >, ParticleSigStateImpl< Navigable< DataVector< INavigable4Momentum >, double, std::vector< std::pair< ElementLink< DataVector< INavigable4Momentum > >, double > > >, P4ImplPxPyPzE, ParticleEvent::Base >, ParticleSigStateImpl< Navigable< INavigable4MomentumCollection, double >, P4ImplPxPyPzE >, ParticleSigStateImpl< Navigable< INavigable4MomentumCollection, double >, P4ImplPxPyPzE, ParticleEvent::Base >, TileTrackMuFeature, and TrigMuonClusterFeature.

◆ px()

double P4PtEtaPhiMBase::px ( ) const

virtual

x component of momentum

Implements I4Momentum.

Definition at line 117 of file P4PtEtaPhiMBase.cxx.

118 { return this->pt()*this->cosPhi();

119 }

◆ py()

double P4PtEtaPhiMBase::py ( ) const

virtual

y component of momentum

Implements I4Momentum.

Definition at line 121 of file P4PtEtaPhiMBase.cxx.

122 { return this->pt()*this->sinPhi();

123 }

◆ pz()

double P4PtEtaPhiMBase::pz ( ) const

virtual

z component of momentum

Implements I4Momentum.

Definition at line 125 of file P4PtEtaPhiMBase.cxx.

126{ return this->pt()*this->cotTh(); }

◆ rapidity()

double P4PtEtaPhiMBase::rapidity ( ) const

virtual

rapidity

Implements I4Momentum.

Definition at line 110 of file P4PtEtaPhiMBase.cxx.

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

◆ set4Mom() [1/3]

void P4PtEtaPhiMBase::set4Mom ( const CLHEP::HepLorentzVector & theHlv )

virtual

set all 4-mom from a CLHEP HepLorentzVector DUMMY IMPLEMENTATION

Implements I4Momentum.

Reimplemented in P4PtEtaPhiM.

Definition at line 180 of file P4PtEtaPhiMBase.cxx.

{
  std::cout << "FATAL ERROR dummy P4PtEtaPhiMBase::set4Mom called " << std::endl ;
  std::abort();
}

◆ set4Mom() [2/3]

void P4PtEtaPhiMBase::set4Mom ( const I4Momentum & theI4Mom )

virtual

set all 4-mom from another I4Momentum reference DUMMY IMPLEMENTATION

Implements I4Momentum.

Reimplemented in P4PtEtaPhiM.

Definition at line 167 of file P4PtEtaPhiMBase.cxx.

{ 
  std::cout << "FATAL ERROR dummy P4PtEtaPhiMBase::set4Mom called " << std::endl ;
  std::abort();
}

◆ set4Mom() [3/3]

void P4PtEtaPhiMBase::set4Mom ( const I4Momentum *const theI4Mom )

virtual

set all 4-mom from another I4Momentum pointer DUMMY IMPLEMENTATION

Implements I4Momentum.

Reimplemented in P4PtEtaPhiM.

Definition at line 173 of file P4PtEtaPhiMBase.cxx.

{ 
  std::cout << "FATAL ERROR dummy P4PtEtaPhiMBase::set4Mom called " << std::endl; ;
  std::abort();
 
}

◆ sinPhi()

double P4PtEtaPhiMBase::sinPhi ( ) const

virtual

sinus phi

Implements I4Momentum.

Definition at line 60 of file P4PtEtaPhiMBase.cxx.

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

◆ sinTh()

double P4PtEtaPhiMBase::sinTh ( ) const

virtual

sinus theta

Implements I4Momentum.

Definition at line 75 of file P4PtEtaPhiMBase.cxx.

{
  // avoid numeric overflow if very large eta
 
  double aEta=std::abs(this->eta());
  if ( aEta>710) {
    aEta=710;
  }
 
  return 1./std::cosh(aEta);
}

◆ tanTh()

double P4PtEtaPhiMBase::tanTh ( ) const

virtual

tan theta

Implements I4Momentum.

Definition at line 87 of file P4PtEtaPhiMBase.cxx.

{
  // avoid numeric overflow if very large eta
 
  double theEta=this->eta();
  if ( std::abs(theEta)>710) {
    theEta=theEta>0 ? 710 : -710;
    return 1./std::sinh(theEta);
  }
 
  return 1./std::sinh(this->eta());
}

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

Public Types

Public Member Functions

Detailed Description

Member Enumeration Documentation

◆ Kind

Constructor & Destructor Documentation

◆ ~P4PtEtaPhiMBase()

Member Function Documentation

◆ cosPhi()

◆ cosTh()

◆ cotTh()

◆ dump()

◆ e()

◆ errors()

◆ et()

◆ eta()

◆ hlv()

◆ iPt()

◆ kind()

◆ m()

◆ m2()

◆ p()

◆ p2()

◆ phi()

◆ pt()

◆ px()

◆ py()

◆ pz()

◆ rapidity()

◆ set4Mom() [1/3]

◆ set4Mom() [2/3]

◆ set4Mom() [3/3]

◆ sinPhi()

◆ sinTh()

◆ tanTh()