Standalone beam kinematics functions

Functions
ParticlePair	Rivet::beams (const Event &e)
	Get beam particles from an event.
bool	Rivet::validBeams (const ParticlePair &beams)
	Check if the given beam pair is valid.
bool	Rivet::validBeams (const Event &e)
	Check if the event's beam pair is valid.
PdgIdPair	Rivet::beamIDs (const ParticlePair &beams)
	Get beam particle IDs from a pair of Particles.
PdgIdPair	Rivet::beamIDs (const Event &e)
	Get beam particle IDs from an event.
PdgIdPair	Rivet::beamEnergies (const ParticlePair &beams)
	Get beam particle energies from a pair of Particles.
PdgIdPair	Rivet::beamEnergies (const Event &e)
	Get beam particle energies from an event.
double	Rivet::sqrtS (double ea, double eb)
	Get beam centre-of-mass energy from a pair of beam energies.
double	Rivet::sqrtS (const pair< double, double > &energies)
	Get beam centre-of-mass energy from a pair of beam energies.
double	Rivet::sqrtS (const FourMomentum &pa, const FourMomentum &pb)
	Get beam centre-of-mass energy from a pair of beam momenta.
double	Rivet::sqrtS (const ParticlePair &beams)
	Get beam centre-of-mass energy from a pair of Particles.
double	Rivet::sqrtS (const Event &e)
	Get beam centre-of-mass energy from an Event.
double	Rivet::asqrtS (const FourMomentum &pa, const FourMomentum &pb)
double	Rivet::asqrtS (const ParticlePair &beams)
double	Rivet::asqrtS (const Event &e)
FourMomentum	Rivet::cmsBoostVec (const FourMomentum &pa, const FourMomentum &pb)
	Get the Lorentz boost to the beam centre-of-mass system (CMS) from a pair of beam momenta.
FourMomentum	Rivet::cmsBoostVec (const ParticlePair &beams)
	Get the Lorentz boost to the beam centre-of-mass system (CMS) from a pair of Particles.
FourMomentum	Rivet::acmsBoostVec (const FourMomentum &pa, const FourMomentum &pb)
	Get the Lorentz boost to the beam centre-of-mass system (CMS) from a pair of beam momenta.
FourMomentum	Rivet::acmsBoostVec (const ParticlePair &beams)
	Get the Lorentz boost to the beam centre-of-mass system (CMS) from a pair of Particles.
Vector3	Rivet::cmsBetaVec (const FourMomentum &pa, const FourMomentum &pb)
	Get the Lorentz boost to the beam centre-of-mass system (CMS) from a pair of beam momenta.
Vector3	Rivet::cmsBetaVec (const ParticlePair &beams)
	Get the Lorentz boost to the beam centre-of-mass system (CMS) from a pair of Particles.
Vector3	Rivet::acmsBetaVec (const FourMomentum &pa, const FourMomentum &pb)
Vector3	Rivet::acmsBetaVec (const ParticlePair &beams)
Vector3	Rivet::cmsGammaVec (const FourMomentum &pa, const FourMomentum &pb)
	Get the Lorentz boost to the beam centre-of-mass system (CMS) from a pair of beam momenta.
Vector3	Rivet::cmsGammaVec (const ParticlePair &beams)
	Get the Lorentz boost to the beam centre-of-mass system (CMS) from a pair of Particles.
Vector3	Rivet::acmsGammaVec (const FourMomentum &pa, const FourMomentum &pb)
Vector3	Rivet::acmsGammaVec (const ParticlePair &beams)
LorentzTransform	Rivet::cmsTransform (const FourMomentum &pa, const FourMomentum &pb)
	Get the Lorentz transformation to the beam centre-of-mass system (CMS) from a pair of beam momenta.
LorentzTransform	Rivet::cmsTransform (const ParticlePair &beams)
	Get the Lorentz transformation to the beam centre-of-mass system (CMS) from a pair of Particles.
LorentzTransform	Rivet::acmsTransform (const FourMomentum &pa, const FourMomentum &pb)
LorentzTransform	Rivet::acmsTransform (const ParticlePair &beams)

Detailed Description

Function Documentation

acmsBetaVec() [1/2]

Vector3 Rivet::acmsBetaVec	(	const FourMomentum &	pa,
		const FourMomentum &	pb )

Get the Lorentz boost to the per-nucleon beam centre-of-mass system (ACMS) from a pair of beam momenta

Note

Uses a nominal nucleon mass of 0.939 GeV to convert masses to A

Referenced by Rivet::Beam::acmsBetaVec().

acmsBetaVec() [2/2]

Vector3 Rivet::acmsBetaVec

(

const ParticlePair &

beams

)

Get the Lorentz boost to the per-nucleon beam centre-of-mass system (ACMS) from a pair of Particles

Note

Uses the sum of nuclear mass numbers A for each beam

References beams().

acmsGammaVec() [1/2]

Vector3 Rivet::acmsGammaVec	(	const FourMomentum &	pa,
		const FourMomentum &	pb )

Get the Lorentz boost to the per-nucleon beam centre-of-mass system (ACMS) from a pair of beam momenta

Note

Uses a nominal nucleon mass of 0.939 GeV to convert masses to A

Referenced by Rivet::Beam::acmsGammaVec().

acmsGammaVec() [2/2]

Vector3 Rivet::acmsGammaVec

(

const ParticlePair &

beams

)

Get the Lorentz boost to the per-nucleon beam centre-of-mass system (ACMS) from a pair of Particles

Note

Uses the sum of nuclear mass numbers A for each beam

References beams().

acmsTransform() [1/2]

LorentzTransform Rivet::acmsTransform	(	const FourMomentum &	pa,
		const FourMomentum &	pb )

Get the Lorentz transformation to the per-nucleon beam centre-of-mass system (CMS) from a pair of beam momenta

Note

Uses a nominal nucleon mass of 0.939 GeV to convert masses to A

Referenced by Rivet::Beam::acmsTransform().

acmsTransform() [2/2]

LorentzTransform Rivet::acmsTransform

(

const ParticlePair &

beams

)

Get the Lorentz transformation to the per-nucleon beam centre-of-mass system (CMS) from a pair of Particles

Note

Uses the sum of nuclear mass numbers A for each beam

References beams().

asqrtS() [1/3]

double Rivet::asqrtS ( const Event & e )

inline

Get per-nucleon beam centre-of-mass energy from an Event

Note

Uses the sum of nuclear mass numbers A for each beam

References asqrtS(), and beams().

asqrtS() [2/3]

double Rivet::asqrtS	(	const FourMomentum &	pa,
		const FourMomentum &	pb )

Get per-nucleon beam centre-of-mass energy from a pair of beam momenta

Note

Uses a nominal nucleon mass of 0.939 GeV to convert masses to A

Referenced by asqrtS(), and Rivet::Beam::asqrtS().

asqrtS() [3/3]

double Rivet::asqrtS

(

const ParticlePair &

beams

)

Get per-nucleon beam centre-of-mass energy from a pair of Particles

Note

Uses the sum of nuclear mass numbers A for each beam

References beams().

sqrtS() [1/2]

double Rivet::sqrtS ( const pair< double, double > & energies )

inline

Get beam centre-of-mass energy from a pair of beam energies.

For want of more complete information, this function assumes massless particles colliding head-on.

References sqrtS().

sqrtS() [2/2]

double Rivet::sqrtS	(	double	ea,
		double	eb )

Get beam centre-of-mass energy from a pair of beam energies.

For want of more complete information, this function assumes massless particles colliding head-on.

Referenced by compatibleBeamEnergy(), compatibleBeamEnergy(), compatibleBeamEnergy(), Rivet::Beam::sqrtS(), sqrtS(), sqrtS(), and sqrtS().