Specialized version of the FourVector with momentum/energy functionality. More...

#include <Vector4.hh>

Inheritance diagram for Rivet::FourMomentum:

Classes
struct	byEAscending
	Struct for sorting by increasing energy. More...
struct	byEDescending
	Struct for sorting by decreasing energy. More...
Public Member Functions
template<typename V4 >
	FourMomentum (const V4 &other)
	FourMomentum (const Vector< 4 > &other)
	FourMomentum (const double E, const double px, const double py, const double pz)
double	E () const
	Get energy (time component of momentum).
Vector3	p () const
	Get 3-momentum part, .
double	px () const
	Get x-component of momentum .
double	py () const
	Get y-component of momentum .
double	pz () const
	Get z-component of momentum .
FourMomentum &	setE (double E)
	Set energy (time component of momentum).
FourMomentum &	setPx (double px)
	Set x-component of momentum .
FourMomentum &	setPy (double py)
	Set y-component of momentum .
FourMomentum &	setPz (double pz)
	Set z-component of momentum .
double	mass () const
	Get the mass $m = \sqrt{E^2 - p^2}$ (the Lorentz self-invariant).
double	massT () const
	Calculate the transverse mass $m_T = m \sin{\theta}$ .
double	mass2 () const
	Get the squared mass (the Lorentz self-invariant).
double	massT2 () const
	Calculate the squared transverse mass $m_T^2 = m^2 \sin^2{\theta}$ .
double	rapidity () const
	Calculate the rapidity.
double	pT2 () const
	Calculate the squared transverse momentum .
double	pT () const
	Calculate the transverse momentum .
double	Et2 () const
	Calculate the transverse energy $E_T^2 = E^2 \sin^2{\theta}$ .
double	Et () const
	Calculate the transverse energy $E_T = E \sin{\theta}$ .
Vector3	boostVector () const
	Calculate the boost vector (in units of $\beta$ ).
FourMomentum &	operator*= (double a)
	Multiply by a scalar.
FourMomentum &	operator/= (double a)
	Divide by a scalar.
FourMomentum &	operator+= (const FourMomentum &v)
FourMomentum &	operator-= (const FourMomentum &v)
FourMomentum	operator- () const
	Invert the vector.
Friends
FourMomentum	multiply (const double a, const FourMomentum &v)
FourMomentum	multiply (const FourMomentum &v, const double a)
FourMomentum	add (const FourMomentum &a, const FourMomentum &b)
FourMomentum	transform (const LorentzTransform &lt, const FourMomentum &v4)