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ROOT::Math::PtEtaPhiM4D< ScalarType > Class Template Reference

template<class ScalarType>
class ROOT::Math::PtEtaPhiM4D< ScalarType >

Class describing a 4D cylindrical coordinate system using Pt , Phi, Eta and M (mass) The metric used is (-,-,-,+).

Spacelike particles (M2 < 0) are described with negative mass values, but in this case m2 must always be less than P2 to preserve a positive value of E2 Phi is restricted to be in the range [-PI,PI)

See also
Overview of the physics vector library

Definition at line 54 of file PtEtaPhiM4D.h.

Public Types

typedef ScalarType Scalar
 

Public Member Functions

 PtEtaPhiM4D ()
 Default constructor gives zero 4-vector (with zero mass)
 
template<class CoordSystem >
constexpr PtEtaPhiM4D (const CoordSystem &c)
 Generic constructor from any 4D coordinate system implementing Pt(), Eta(), Phi() and M()
 
 PtEtaPhiM4D (const PtEtaPhiM4D &v)
 copy constructor
 
 PtEtaPhiM4D (Scalar pt, Scalar eta, Scalar phi, Scalar mass)
 Constructor from pt, eta, phi, mass values.
 
Scalar E () const
 Energy (timelike component of momentum-energy 4-vector)
 
Scalar E2 () const
 energy squared
 
Scalar Et () const
 transverse energy
 
Scalar Et2 () const
 transverse energy squared
 
Scalar Eta () const
 
void GetCoordinates (Scalar &pt, Scalar &eta, Scalar &phi, Scalar &mass) const
 get internal data into 4 Scalar numbers
 
void GetCoordinates (Scalar dest[]) const
 get internal data into an array of 4 Scalar numbers
 
Scalar M () const
 M() is the invariant mass; in this coordinate system it can be negagative if set that way.
 
Scalar M2 () const
 vector magnitude squared (or mass squared) In case of negative mass (spacelike particles return negative values)
 
Scalar Mag () const
 
Scalar Mag2 () const
 
Scalar Mt () const
 transverse mass - will be negative if Mt2() is negative
 
Scalar Mt2 () const
 transverse mass squared
 
void Negate ()
 negate the 4-vector – Note that the energy cannot be negate (would need an additional data member) therefore negate will work only on the spatial components One would need to use negate only with vectors having the energy as data members
 
bool operator!= (const PtEtaPhiM4D &rhs) const
 
template<class CoordSystem >
PtEtaPhiM4Doperator= (const CoordSystem &c)
 Assignment from a generic coordinate system implementing Pt(), Eta(), Phi() and M()
 
PtEtaPhiM4Doperator= (const PtEtaPhiM4D &v)
 assignment operator
 
bool operator== (const PtEtaPhiM4D &rhs) const
 Exact equality.
 
Scalar P () const
 magnitude of momentum
 
Scalar P2 () const
 squared magnitude of spatial components (momentum squared)
 
Scalar Perp () const
 
Scalar Perp2 () const
 
Scalar Phi () const
 
Scalar Pt () const
 
Scalar Pt2 () const
 transverse spatial component squared
 
Scalar Px () const
 
Scalar Py () const
 
Scalar Pz () const
 
Scalar R () const
 
Scalar Rho () const
 
void Scale (Scalar a)
 Scale coordinate values by a scalar quantity a.
 
void SetCoordinates (const Scalar src[])
 Set internal data based on an array of 4 Scalar numbers.
 
void SetCoordinates (Scalar pt, Scalar eta, Scalar phi, Scalar mass)
 Set internal data based on 4 Scalar numbers.
 
void SetEta (Scalar eta)
 set eta value
 
void SetM (Scalar mass)
 set M value
 
void SetPhi (Scalar phi)
 set phi value
 
void SetPt (Scalar pt)
 set Pt value
 
void SetPxPyPzE (Scalar px, Scalar py, Scalar pz, Scalar e)
 set values using cartesian coordinate system
 
Scalar T () const
 
Scalar t () const
 
Scalar Theta () const
 polar angle
 
Scalar X () const
 
Scalar x () const
 
Scalar Y () const
 
Scalar y () const
 
Scalar Z () const
 
Scalar z () const
 

Static Public Attributes

static constexpr unsigned int Dimension = 4U
 

Private Member Functions

void RestrictNegMass ()
 
void RestrictPhi ()
 

Static Private Member Functions

static Scalar pi ()
 

Private Attributes

ScalarType fEta
 
ScalarType fM
 
ScalarType fPhi
 
ScalarType fPt
 

#include <Math/GenVector/PtEtaPhiM4D.h>

Member Typedef Documentation

◆ Scalar

template<class ScalarType >
typedef ScalarType ROOT::Math::PtEtaPhiM4D< ScalarType >::Scalar

Definition at line 58 of file PtEtaPhiM4D.h.

Constructor & Destructor Documentation

◆ PtEtaPhiM4D() [1/4]

template<class ScalarType >
ROOT::Math::PtEtaPhiM4D< ScalarType >::PtEtaPhiM4D ( )
inline

Default constructor gives zero 4-vector (with zero mass)

Definition at line 66 of file PtEtaPhiM4D.h.

◆ PtEtaPhiM4D() [2/4]

template<class ScalarType >
ROOT::Math::PtEtaPhiM4D< ScalarType >::PtEtaPhiM4D ( Scalar  pt,
Scalar  eta,
Scalar  phi,
Scalar  mass 
)
inline

Constructor from pt, eta, phi, mass values.

Definition at line 71 of file PtEtaPhiM4D.h.

◆ PtEtaPhiM4D() [3/4]

template<class ScalarType >
template<class CoordSystem >
constexpr ROOT::Math::PtEtaPhiM4D< ScalarType >::PtEtaPhiM4D ( const CoordSystem &  c)
inlineexplicitconstexpr

Generic constructor from any 4D coordinate system implementing Pt(), Eta(), Phi() and M()

Definition at line 82 of file PtEtaPhiM4D.h.

◆ PtEtaPhiM4D() [4/4]

template<class ScalarType >
ROOT::Math::PtEtaPhiM4D< ScalarType >::PtEtaPhiM4D ( const PtEtaPhiM4D< ScalarType > &  v)
inline

copy constructor

Definition at line 91 of file PtEtaPhiM4D.h.

Member Function Documentation

◆ E()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::E ( ) const
inline

Energy (timelike component of momentum-energy 4-vector)

Definition at line 198 of file PtEtaPhiM4D.h.

◆ E2()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::E2 ( ) const
inline

energy squared

Definition at line 189 of file PtEtaPhiM4D.h.

◆ Et()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::Et ( ) const
inline

transverse energy

Definition at line 250 of file PtEtaPhiM4D.h.

◆ Et2()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::Et2 ( ) const
inline

transverse energy squared

Definition at line 241 of file PtEtaPhiM4D.h.

◆ Eta()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::Eta ( ) const
inline

Definition at line 142 of file PtEtaPhiM4D.h.

◆ GetCoordinates() [1/2]

template<class ScalarType >
void ROOT::Math::PtEtaPhiM4D< ScalarType >::GetCoordinates ( Scalar pt,
Scalar eta,
Scalar phi,
Scalar mass 
) const
inline

get internal data into 4 Scalar numbers

Definition at line 134 of file PtEtaPhiM4D.h.

◆ GetCoordinates() [2/2]

template<class ScalarType >
void ROOT::Math::PtEtaPhiM4D< ScalarType >::GetCoordinates ( Scalar  dest[]) const
inline

get internal data into an array of 4 Scalar numbers

Definition at line 118 of file PtEtaPhiM4D.h.

◆ M()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::M ( ) const
inline

M() is the invariant mass; in this coordinate system it can be negagative if set that way.

Definition at line 148 of file PtEtaPhiM4D.h.

◆ M2()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::M2 ( ) const
inline

vector magnitude squared (or mass squared) In case of negative mass (spacelike particles return negative values)

Definition at line 206 of file PtEtaPhiM4D.h.

◆ Mag()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::Mag ( ) const
inline

Definition at line 149 of file PtEtaPhiM4D.h.

◆ Mag2()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::Mag2 ( ) const
inline

Definition at line 209 of file PtEtaPhiM4D.h.

◆ Mt()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::Mt ( ) const
inline

transverse mass - will be negative if Mt2() is negative

Definition at line 225 of file PtEtaPhiM4D.h.

◆ Mt2()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::Mt2 ( ) const
inline

transverse mass squared

Definition at line 220 of file PtEtaPhiM4D.h.

◆ Negate()

template<class ScalarType >
void ROOT::Math::PtEtaPhiM4D< ScalarType >::Negate ( )
inline

negate the 4-vector – Note that the energy cannot be negate (would need an additional data member) therefore negate will work only on the spatial components One would need to use negate only with vectors having the energy as data members

Definition at line 318 of file PtEtaPhiM4D.h.

◆ operator!=()

template<class ScalarType >
bool ROOT::Math::PtEtaPhiM4D< ScalarType >::operator!= ( const PtEtaPhiM4D< ScalarType > &  rhs) const
inline

Definition at line 355 of file PtEtaPhiM4D.h.

◆ operator=() [1/2]

template<class ScalarType >
template<class CoordSystem >
PtEtaPhiM4D & ROOT::Math::PtEtaPhiM4D< ScalarType >::operator= ( const CoordSystem &  c)
inline

Assignment from a generic coordinate system implementing Pt(), Eta(), Phi() and M()

Definition at line 340 of file PtEtaPhiM4D.h.

◆ operator=() [2/2]

template<class ScalarType >
PtEtaPhiM4D & ROOT::Math::PtEtaPhiM4D< ScalarType >::operator= ( const PtEtaPhiM4D< ScalarType > &  v)
inline

assignment operator

Definition at line 97 of file PtEtaPhiM4D.h.

◆ operator==()

template<class ScalarType >
bool ROOT::Math::PtEtaPhiM4D< ScalarType >::operator== ( const PtEtaPhiM4D< ScalarType > &  rhs) const
inline

Exact equality.

Definition at line 351 of file PtEtaPhiM4D.h.

◆ P()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::P ( ) const
inline

magnitude of momentum

Definition at line 169 of file PtEtaPhiM4D.h.

◆ P2()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::P2 ( ) const
inline

squared magnitude of spatial components (momentum squared)

Definition at line 180 of file PtEtaPhiM4D.h.

◆ Perp()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::Perp ( ) const
inline

Definition at line 151 of file PtEtaPhiM4D.h.

◆ Perp2()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::Perp2 ( ) const
inline

Definition at line 215 of file PtEtaPhiM4D.h.

◆ Phi()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::Phi ( ) const
inline

Definition at line 143 of file PtEtaPhiM4D.h.

◆ pi()

template<class ScalarType >
static Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::pi ( )
inlinestaticprivate

Definition at line 253 of file PtEtaPhiM4D.h.

◆ Pt()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::Pt ( ) const
inline

Definition at line 141 of file PtEtaPhiM4D.h.

◆ Pt2()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::Pt2 ( ) const
inline

transverse spatial component squared

Definition at line 214 of file PtEtaPhiM4D.h.

◆ Px()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::Px ( ) const
inline

Definition at line 156 of file PtEtaPhiM4D.h.

◆ Py()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::Py ( ) const
inline

Definition at line 158 of file PtEtaPhiM4D.h.

◆ Pz()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::Pz ( ) const
inline

Definition at line 160 of file PtEtaPhiM4D.h.

◆ R()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::R ( ) const
inline

Definition at line 175 of file PtEtaPhiM4D.h.

◆ RestrictNegMass()

template<class ScalarType >
void ROOT::Math::PtEtaPhiM4D< ScalarType >::RestrictNegMass ( )
inlineprivate

Definition at line 260 of file PtEtaPhiM4D.h.

◆ RestrictPhi()

template<class ScalarType >
void ROOT::Math::PtEtaPhiM4D< ScalarType >::RestrictPhi ( )
inlineprivate

Definition at line 254 of file PtEtaPhiM4D.h.

◆ Rho()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::Rho ( ) const
inline

Definition at line 152 of file PtEtaPhiM4D.h.

◆ Scale()

template<class ScalarType >
void ROOT::Math::PtEtaPhiM4D< ScalarType >::Scale ( Scalar  a)
inline

Scale coordinate values by a scalar quantity a.

Definition at line 327 of file PtEtaPhiM4D.h.

◆ SetCoordinates() [1/2]

template<class ScalarType >
void ROOT::Math::PtEtaPhiM4D< ScalarType >::SetCoordinates ( const Scalar  src[])
inline

Set internal data based on an array of 4 Scalar numbers.

Definition at line 109 of file PtEtaPhiM4D.h.

◆ SetCoordinates() [2/2]

template<class ScalarType >
void ROOT::Math::PtEtaPhiM4D< ScalarType >::SetCoordinates ( Scalar  pt,
Scalar  eta,
Scalar  phi,
Scalar  mass 
)
inline

Set internal data based on 4 Scalar numbers.

Definition at line 124 of file PtEtaPhiM4D.h.

◆ SetEta()

template<class ScalarType >
void ROOT::Math::PtEtaPhiM4D< ScalarType >::SetEta ( Scalar  eta)
inline

set eta value

Definition at line 287 of file PtEtaPhiM4D.h.

◆ SetM()

template<class ScalarType >
void ROOT::Math::PtEtaPhiM4D< ScalarType >::SetM ( Scalar  mass)
inline

set M value

Definition at line 300 of file PtEtaPhiM4D.h.

◆ SetPhi()

template<class ScalarType >
void ROOT::Math::PtEtaPhiM4D< ScalarType >::SetPhi ( Scalar  phi)
inline

set phi value

Definition at line 293 of file PtEtaPhiM4D.h.

◆ SetPt()

template<class ScalarType >
void ROOT::Math::PtEtaPhiM4D< ScalarType >::SetPt ( Scalar  pt)
inline

set Pt value

Definition at line 281 of file PtEtaPhiM4D.h.

◆ SetPxPyPzE()

template<class ScalarType >
void ROOT::Math::PtEtaPhiM4D< ScalarType >::SetPxPyPzE ( Scalar  px,
Scalar  py,
Scalar  pz,
Scalar  e 
)
inline

set values using cartesian coordinate system

Definition at line 406 of file PtEtaPhiM4D.h.

◆ T()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::T ( ) const
inline

Definition at line 200 of file PtEtaPhiM4D.h.

◆ t()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::t ( ) const
inline

Definition at line 364 of file PtEtaPhiM4D.h.

◆ Theta()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::Theta ( ) const
inline

polar angle

Definition at line 274 of file PtEtaPhiM4D.h.

◆ X()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::X ( ) const
inline

Definition at line 157 of file PtEtaPhiM4D.h.

◆ x()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::x ( ) const
inline

Definition at line 361 of file PtEtaPhiM4D.h.

◆ Y()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::Y ( ) const
inline

Definition at line 159 of file PtEtaPhiM4D.h.

◆ y()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::y ( ) const
inline

Definition at line 362 of file PtEtaPhiM4D.h.

◆ Z()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::Z ( ) const
inline

Definition at line 164 of file PtEtaPhiM4D.h.

◆ z()

template<class ScalarType >
Scalar ROOT::Math::PtEtaPhiM4D< ScalarType >::z ( ) const
inline

Definition at line 363 of file PtEtaPhiM4D.h.

Member Data Documentation

◆ Dimension

template<class ScalarType >
constexpr unsigned int ROOT::Math::PtEtaPhiM4D< ScalarType >::Dimension = 4U
staticconstexpr

Definition at line 59 of file PtEtaPhiM4D.h.

◆ fEta

template<class ScalarType >
ScalarType ROOT::Math::PtEtaPhiM4D< ScalarType >::fEta
private

Definition at line 384 of file PtEtaPhiM4D.h.

◆ fM

template<class ScalarType >
ScalarType ROOT::Math::PtEtaPhiM4D< ScalarType >::fM
private

Definition at line 386 of file PtEtaPhiM4D.h.

◆ fPhi

template<class ScalarType >
ScalarType ROOT::Math::PtEtaPhiM4D< ScalarType >::fPhi
private

Definition at line 385 of file PtEtaPhiM4D.h.

◆ fPt

template<class ScalarType >
ScalarType ROOT::Math::PtEtaPhiM4D< ScalarType >::fPt
private

Definition at line 383 of file PtEtaPhiM4D.h.

  • math/genvector/inc/Math/GenVector/PtEtaPhiM4D.h