KinematicParameters Class Reference

#include <KinematicParameters.h>

Public Types
typedef ROOT::Math::SVector < double, 7 >	AlgebraicVector7

Public Member Functions
double	energy () const
bool	isValid () const
	KinematicParameters ()
template<typename... Args>
	KinematicParameters (Args...args)
	KinematicParameters (const AlgebraicVector7 &pr)
double	mass () const
GlobalVector	momentum () const
double	operator() (const int i) const
	Allows to access directly one component of the vector (index between 0 and 6) More...
GlobalPoint	position () const
AlgebraicVector7 const &	vector () const
	The full vector (7 elements) More...

Private Attributes
AlgebraicVector7	par
bool	vl

Detailed Description

Class to store the 7-vector of particle parameters: (x,y,z,p_x,p_y,p_z,m)

Kirill Prokofiev Febrauary 2003

Definition at line 16 of file KinematicParameters.h.

Member Typedef Documentation

typedef ROOT::Math::SVector<double,7> KinematicParameters::AlgebraicVector7

Definition at line 20 of file KinematicParameters.h.

Constructor & Destructor Documentation

KinematicParameters::KinematicParameters ( )

inline

Definition at line 22 of file KinematicParameters.h.

: vl(false) {}

template<typename... Args>

KinematicParameters::KinematicParameters ( Args...  args )

inline

Definition at line 25 of file KinematicParameters.h.

: par(args...), vl(true){}

KinematicParameters::KinematicParameters ( const AlgebraicVector7 &  pr )

inline

Definition at line 27 of file KinematicParameters.h.

                                                 : par(pr),vl(true)
  {}

Member Function Documentation

double KinematicParameters::energy ( void  ) const

inline

The energy of the particle

Definition at line 62 of file KinematicParameters.h.

References par, and mathSSE::sqrt().

                        {
  return sqrt(par(3)*par(3)+par(4)*par(4)+par(5)*par(5)+par(6)*par(6));
  }

bool KinematicParameters::isValid ( void  ) const

inline

Definition at line 67 of file KinematicParameters.h.

References vl.

  {return vl;}

double KinematicParameters::mass ( ) const

inline

The mass of the particle

Definition at line 57 of file KinematicParameters.h.

References par.

{return par(6);}

GlobalVector KinematicParameters::momentum ( ) const

inline

The momentum vector

Definition at line 47 of file KinematicParameters.h.

References par.

{return GlobalVector(par[3], par[4], par[5]);}

double KinematicParameters::operator() ( const int  i ) const

inline

Allows to access directly one component of the vector (index between 0 and 6)

The order of the parameters is (x,y,z,p_x,p_y,p_z,m)

Definition at line 42 of file KinematicParameters.h.

References par.

{return par(i);}

GlobalPoint KinematicParameters::position ( ) const

inline

The position of the state

Definition at line 52 of file KinematicParameters.h.

References par.

Referenced by VirtualKinematicParticle::stateAtPoint().

{return GlobalPoint(par[0], par[1], par[2]);}

AlgebraicVector7 const& KinematicParameters::vector ( ) const

inline

The full vector (7 elements)

The order of the parameters is (x,y,z,p_x,p_y,p_z,m)

Definition at line 35 of file KinematicParameters.h.

References par.

Referenced by KinematicConstrainedVertexFitter::fit(), KinematicConstrainedVertexFitterT< nTrk, nConstraint >::fit(), KinematicRefittedTrackState::kinematicParameters(), KinematicState::mass(), and KinematicState::operator==().

{return par;}

Member Data Documentation

AlgebraicVector7 KinematicParameters::par

private

Definition at line 71 of file KinematicParameters.h.

Referenced by energy(), mass(), momentum(), operator()(), position(), and vector().

bool KinematicParameters::vl

private

Definition at line 72 of file KinematicParameters.h.

Referenced by isValid().