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ROOT::Math::PxPyPzE4D< ScalarType > Class Template Reference
template<class ScalarType = double>
class ROOT::Math::PxPyPzE4D< ScalarType >

Class describing a 4D cartesian coordinate system (x, y, z, t coordinates) or momentum-energy vectors stored as (Px, Py, Pz, E).

The metric used is (-,-,-,+)

Definition at line 42 of file PxPyPzE4D.h.

## Public Types

typedef ScalarType Scalar

## Public Member Functions

PxPyPzE4D ()
Default constructor with x=y=z=t=0.

template<class CoordSystem >
PxPyPzE4D (const CoordSystem &v)
construct from any vector or coordinate system class implementing x(), y() and z() and t()

PxPyPzE4D (const PxPyPzE4D &v)
copy constructor

PxPyPzE4D (Scalar px, Scalar py, Scalar pz, Scalar e)
Constructor from x, y , z , t values.

Scalar E () const

Scalar Et () const
transverse energy

Scalar Et2 () const
transverse energy squared

Scalar Eta () const
pseudorapidity

void GetCoordinates (Scalar &px, Scalar &py, Scalar &pz, Scalar &e) 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
invariant mass

Scalar M2 () const
vector magnitude squared (or mass squared)

Scalar Mag () const

Scalar Mag2 () const

Scalar Mt () const
transverse mass

Scalar Mt2 () const
transverse mass squared

void Negate ()
negate the 4-vector

bool operator!= (const PxPyPzE4D &rhs) const

template<class AnyCoordSystem >
PxPyPzE4Doperator= (const AnyCoordSystem &v)
Assignment from a generic coordinate system implementing x(), y(), z() and t()

PxPyPzE4Doperator= (const PxPyPzE4D &v)
assignment operator

bool operator== (const PxPyPzE4D &rhs) const
Exact equality.

Scalar P () const
magnitude of spatial components (magnitude of 3-momentum)

Scalar P2 () const
squared magnitude of spatial components

Scalar Perp () const

Scalar Perp2 () const

Scalar Phi () const
azimuthal angle

Scalar Pt () const
Transverse spatial component (P_perp or rho)

Scalar Pt2 () const
transverse spatial component squared

Scalar Px () const

Scalar Py () const

Scalar Pz () const

Scalar R () const

Scalar Rho () const

void Scale (const 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 px, Scalar py, Scalar pz, Scalar e)
Set internal data based on 4 Scalar numbers.

void SetE (Scalar e)
set T value

void SetPx (Scalar px)
set X value

void SetPxPyPzE (Scalar px, Scalar py, Scalar pz, Scalar e)
set all values using cartesian coordinates

void SetPy (Scalar py)
set Y value

void SetPz (Scalar pz)
set Z value

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

## Private Attributes

ScalarType fT

ScalarType fX
(contigous) data containing the coordinate values x,y,z,t

ScalarType fY

ScalarType fZ

#include <Math/GenVector/PxPyPzE4D.h>

## ◆ Scalar

template<class ScalarType = double>
 typedef ScalarType ROOT::Math::PxPyPzE4D< ScalarType >::Scalar

Definition at line 46 of file PxPyPzE4D.h.

## ◆ PxPyPzE4D() [1/4]

template<class ScalarType = double>
 ROOT::Math::PxPyPzE4D< ScalarType >::PxPyPzE4D ( )
inline

Default constructor with x=y=z=t=0.

Definition at line 53 of file PxPyPzE4D.h.

## ◆ PxPyPzE4D() [2/4]

template<class ScalarType = double>
 ROOT::Math::PxPyPzE4D< ScalarType >::PxPyPzE4D ( Scalar px, Scalar py, Scalar pz, Scalar e )
inline

Constructor from x, y , z , t values.

Definition at line 59 of file PxPyPzE4D.h.

## ◆ PxPyPzE4D() [3/4]

template<class ScalarType = double>
template<class CoordSystem >
 ROOT::Math::PxPyPzE4D< ScalarType >::PxPyPzE4D ( const CoordSystem & v )
inlineexplicit

construct from any vector or coordinate system class implementing x(), y() and z() and t()

Definition at line 68 of file PxPyPzE4D.h.

## ◆ PxPyPzE4D() [4/4]

template<class ScalarType = double>
 ROOT::Math::PxPyPzE4D< ScalarType >::PxPyPzE4D ( const PxPyPzE4D< ScalarType > & v )
inline

copy constructor

Definition at line 76 of file PxPyPzE4D.h.

## ◆ E()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::E ( ) const
inline

Definition at line 121 of file PxPyPzE4D.h.

## ◆ Et()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::Et ( ) const
inline

transverse energy

Definition at line 211 of file PxPyPzE4D.h.

## ◆ Et2()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::Et2 ( ) const
inline

transverse energy squared

Definition at line 202 of file PxPyPzE4D.h.

## ◆ Eta()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::Eta ( ) const
inline

pseudorapidity

Definition at line 230 of file PxPyPzE4D.h.

## ◆ GetCoordinates() [1/2]

template<class ScalarType = double>
 void ROOT::Math::PxPyPzE4D< ScalarType >::GetCoordinates ( Scalar & px, Scalar & py, Scalar & pz, Scalar & e ) const
inline

get internal data into 4 Scalar numbers

Definition at line 111 of file PxPyPzE4D.h.

## ◆ GetCoordinates() [2/2]

template<class ScalarType = double>
 void ROOT::Math::PxPyPzE4D< ScalarType >::GetCoordinates ( Scalar dest[] ) const
inline

get internal data into an array of 4 Scalar numbers

Definition at line 99 of file PxPyPzE4D.h.

## ◆ M()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::M ( ) const
inline

invariant mass

Definition at line 150 of file PxPyPzE4D.h.

## ◆ M2()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::M2 ( ) const
inline

vector magnitude squared (or mass squared)

Definition at line 144 of file PxPyPzE4D.h.

## ◆ Mag()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::Mag ( ) const
inline

Definition at line 163 of file PxPyPzE4D.h.

## ◆ Mag2()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::Mag2 ( ) const
inline

Definition at line 145 of file PxPyPzE4D.h.

## ◆ Mt()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::Mt ( ) const
inline

transverse mass

Definition at line 186 of file PxPyPzE4D.h.

## ◆ Mt2()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::Mt2 ( ) const
inline

transverse mass squared

Definition at line 181 of file PxPyPzE4D.h.

## ◆ Negate()

template<class ScalarType = double>
 void ROOT::Math::PxPyPzE4D< ScalarType >::Negate ( )
inline

negate the 4-vector

Definition at line 279 of file PxPyPzE4D.h.

## ◆ operator!=()

template<class ScalarType = double>
 bool ROOT::Math::PxPyPzE4D< ScalarType >::operator!= ( const PxPyPzE4D< ScalarType > & rhs ) const
inline

Definition at line 310 of file PxPyPzE4D.h.

## ◆ operator=() [1/2]

template<class ScalarType = double>
template<class AnyCoordSystem >
 PxPyPzE4D & ROOT::Math::PxPyPzE4D< ScalarType >::operator= ( const AnyCoordSystem & v )
inline

Assignment from a generic coordinate system implementing x(), y(), z() and t()

Definition at line 296 of file PxPyPzE4D.h.

## ◆ operator=() [2/2]

template<class ScalarType = double>
 PxPyPzE4D & ROOT::Math::PxPyPzE4D< ScalarType >::operator= ( const PxPyPzE4D< ScalarType > & v )
inline

assignment operator

Definition at line 82 of file PxPyPzE4D.h.

## ◆ operator==()

template<class ScalarType = double>
 bool ROOT::Math::PxPyPzE4D< ScalarType >::operator== ( const PxPyPzE4D< ScalarType > & rhs ) const
inline

Exact equality.

Definition at line 307 of file PxPyPzE4D.h.

## ◆ P()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::P ( ) const
inline

magnitude of spatial components (magnitude of 3-momentum)

Definition at line 138 of file PxPyPzE4D.h.

## ◆ P2()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::P2 ( ) const
inline

squared magnitude of spatial components

Definition at line 133 of file PxPyPzE4D.h.

## ◆ Perp()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::Perp ( ) const
inline

Definition at line 175 of file PxPyPzE4D.h.

## ◆ Perp2()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::Perp2 ( ) const
inline

Definition at line 169 of file PxPyPzE4D.h.

## ◆ Phi()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::Phi ( ) const
inline

azimuthal angle

Definition at line 220 of file PxPyPzE4D.h.

## ◆ Pt()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::Pt ( ) const
inline

Transverse spatial component (P_perp or rho)

Definition at line 174 of file PxPyPzE4D.h.

## ◆ Pt2()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::Pt2 ( ) const
inline

transverse spatial component squared

Definition at line 168 of file PxPyPzE4D.h.

## ◆ Px()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::Px ( ) const
inline

Definition at line 118 of file PxPyPzE4D.h.

## ◆ Py()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::Py ( ) const
inline

Definition at line 119 of file PxPyPzE4D.h.

## ◆ Pz()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::Pz ( ) const
inline

Definition at line 120 of file PxPyPzE4D.h.

## ◆ R()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::R ( ) const
inline

Definition at line 139 of file PxPyPzE4D.h.

## ◆ Rho()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::Rho ( ) const
inline

Definition at line 176 of file PxPyPzE4D.h.

## ◆ Scale()

template<class ScalarType = double>
 void ROOT::Math::PxPyPzE4D< ScalarType >::Scale ( const Scalar & a )
inline

scale coordinate values by a scalar quantity a

Definition at line 284 of file PxPyPzE4D.h.

## ◆ SetCoordinates() [1/2]

template<class ScalarType = double>
 void ROOT::Math::PxPyPzE4D< ScalarType >::SetCoordinates ( const Scalar src[] )
inline

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

Definition at line 93 of file PxPyPzE4D.h.

## ◆ SetCoordinates() [2/2]

template<class ScalarType = double>
 void ROOT::Math::PxPyPzE4D< ScalarType >::SetCoordinates ( Scalar px, Scalar py, Scalar pz, Scalar e )
inline

Set internal data based on 4 Scalar numbers.

Definition at line 105 of file PxPyPzE4D.h.

## ◆ SetE()

template<class ScalarType = double>
 void ROOT::Math::PxPyPzE4D< ScalarType >::SetE ( Scalar e )
inline

set T value

Definition at line 258 of file PxPyPzE4D.h.

## ◆ SetPx()

template<class ScalarType = double>
 void ROOT::Math::PxPyPzE4D< ScalarType >::SetPx ( Scalar px )
inline

set X value

Definition at line 240 of file PxPyPzE4D.h.

## ◆ SetPxPyPzE()

template<class ScalarType = double>
 void ROOT::Math::PxPyPzE4D< ScalarType >::SetPxPyPzE ( Scalar px, Scalar py, Scalar pz, Scalar e )
inline

set all values using cartesian coordinates

Definition at line 265 of file PxPyPzE4D.h.

## ◆ SetPy()

template<class ScalarType = double>
 void ROOT::Math::PxPyPzE4D< ScalarType >::SetPy ( Scalar py )
inline

set Y value

Definition at line 246 of file PxPyPzE4D.h.

## ◆ SetPz()

template<class ScalarType = double>
 void ROOT::Math::PxPyPzE4D< ScalarType >::SetPz ( Scalar pz )
inline

set Z value

Definition at line 252 of file PxPyPzE4D.h.

## ◆ T()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::T ( ) const
inline

Definition at line 126 of file PxPyPzE4D.h.

## ◆ t()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::t ( ) const
inline

Definition at line 320 of file PxPyPzE4D.h.

## ◆ Theta()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::Theta ( ) const
inline

polar angle

Definition at line 225 of file PxPyPzE4D.h.

## ◆ X()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::X ( ) const
inline

Definition at line 123 of file PxPyPzE4D.h.

## ◆ x()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::x ( ) const
inline

Definition at line 317 of file PxPyPzE4D.h.

## ◆ Y()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::Y ( ) const
inline

Definition at line 124 of file PxPyPzE4D.h.

## ◆ y()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::y ( ) const
inline

Definition at line 318 of file PxPyPzE4D.h.

## ◆ Z()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::Z ( ) const
inline

Definition at line 125 of file PxPyPzE4D.h.

## ◆ z()

template<class ScalarType = double>
 Scalar ROOT::Math::PxPyPzE4D< ScalarType >::z ( ) const
inline

Definition at line 319 of file PxPyPzE4D.h.

## ◆ fT

template<class ScalarType = double>
 ScalarType ROOT::Math::PxPyPzE4D< ScalarType >::fT
private

Definition at line 347 of file PxPyPzE4D.h.

## ◆ fX

template<class ScalarType = double>
 ScalarType ROOT::Math::PxPyPzE4D< ScalarType >::fX
private

(contigous) data containing the coordinate values x,y,z,t

Definition at line 344 of file PxPyPzE4D.h.

## ◆ fY

template<class ScalarType = double>
 ScalarType ROOT::Math::PxPyPzE4D< ScalarType >::fY
private

Definition at line 345 of file PxPyPzE4D.h.

## ◆ fZ

template<class ScalarType = double>
 ScalarType ROOT::Math::PxPyPzE4D< ScalarType >::fZ
private

Definition at line 346 of file PxPyPzE4D.h.

Libraries for ROOT::Math::PxPyPzE4D< ScalarType >:

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