Acts::ParticleHypothesis Class Reference

Specialized particle hypothesis for any kind of charged particles. More...

#include <Acts/EventData/ParticleHypothesis.hpp>

Inheritance diagram for Acts::ParticleHypothesis:

Collaboration diagram for Acts::ParticleHypothesis:

Public Member Functions
template<typename other_charge_t>
constexpr	ParticleHypothesis (const GenericParticleHypothesis< other_charge_t > &other)
	Convert from another particle hypothesis with different charge type.
	ParticleHypothesis (PdgParticle absPdg)
	Constructor with PDG particle code (mass from particle data table).
constexpr	ParticleHypothesis (PdgParticle absPdg, float mass, AnyCharge chargeType)
	Constructor with explicit mass and charge.
Public Member Functions inherited from Acts::GenericParticleHypothesis< AnyCharge >
constexpr	GenericParticleHypothesis (PdgParticle absPdg, float mass, ChargeType chargeType)
	Creates a particle hypothesis using absolute PDG, mass and the charge type.
constexpr float	absoluteCharge () const noexcept
	Get the hypothesized absolute charge.
constexpr PdgParticle	absolutePdg () const noexcept
	Get the hypothesized absolute PDG.
constexpr const ChargeType &	chargeType () const noexcept
	Get the hypothesized charge type.
constexpr auto	extractCharge (T qOverP) const noexcept
	Extracts the signed charge from the q over p track parameter using the charge hypothesis.
constexpr auto	extractMomentum (T qOverP) const noexcept
	Extracts the particle momentum from the q over p track parameter using the charge hypothesis.
constexpr float	mass () const noexcept
	Get the hypothesized mass.
constexpr auto	qOverP (P momentum, Q signedQ) const noexcept
	Calculate the q over p track parameter with the given absolute momentum and charge.
std::ostream &	toStream (std::ostream &os) const
	Output stream representation of the particle hypothesis.

Static Public Member Functions
static ParticleHypothesis	chargedGeantino ()
	Create a charged geantino particle hypothesis with unit charge.
static ParticleHypothesis	chargedGeantino (float absQ)
	Create a charged geantino particle hypothesis with custom charge.
static ParticleHypothesis	electron ()
	Create an electron particle hypothesis.
static ParticleHypothesis	geantino ()
	Create a neutral geantino particle hypothesis (massless neutral particle).
static ParticleHypothesis	kaon ()
	Create a charged kaon particle hypothesis.
static ParticleHypothesis	muon ()
	Create a muon particle hypothesis.
static ParticleHypothesis	photon ()
	Create a photon particle hypothesis.
static ParticleHypothesis	pion ()
	Create a charged pion particle hypothesis.
static ParticleHypothesis	pion0 ()
	Create a neutral pion particle hypothesis.
static ParticleHypothesis	pionLike (float absQ)
	Create a pion-like particle hypothesis with custom charge.
static ParticleHypothesis	proton ()
	Create a proton particle hypothesis.

Additional Inherited Members
Public Types inherited from Acts::GenericParticleHypothesis< AnyCharge >
using	ChargeType
	Type alias for charge type used in particle hypothesis.

Detailed Description

Specialized particle hypothesis for any kind of charged particles.

Note

This serves as a factory for common particles with any kind of charge.

Constructor & Destructor Documentation

ParticleHypothesis() [1/3]

Acts::ParticleHypothesis::ParticleHypothesis ( PdgParticle absPdg, float mass, AnyCharge chargeType )

constexpr

Constructor with explicit mass and charge.

Parameters

absPdg	The absolute PDG particle code
mass	The particle mass
chargeType	The charge type (any charge)

ParticleHypothesis() [2/3]

Acts::ParticleHypothesis::ParticleHypothesis ( PdgParticle absPdg )

explicit

Constructor with PDG particle code (mass from particle data table).

Parameters

absPdg

The absolute PDG particle code

ParticleHypothesis() [3/3]

template<typename other_charge_t>

Acts::ParticleHypothesis::ParticleHypothesis ( const GenericParticleHypothesis< other_charge_t > & other )

explicitconstexpr

Convert from another particle hypothesis with different charge type.

Parameters

other

The source particle hypothesis to convert from

Member Function Documentation

chargedGeantino() [1/2]

ParticleHypothesis Acts::ParticleHypothesis::chargedGeantino ( )

static

Create a charged geantino particle hypothesis with unit charge.

Returns

Charged geantino particle hypothesis with any charge type

chargedGeantino() [2/2]

ParticleHypothesis Acts::ParticleHypothesis::chargedGeantino ( float absQ )

static

Create a charged geantino particle hypothesis with custom charge.

Parameters

absQ	The absolute charge value

Returns

Charged geantino particle hypothesis with any charge type

electron()

ParticleHypothesis Acts::ParticleHypothesis::electron ( )

static

Create an electron particle hypothesis.

Returns

Electron particle hypothesis with any charge type

geantino()

ParticleHypothesis Acts::ParticleHypothesis::geantino ( )

static

Create a neutral geantino particle hypothesis (massless neutral particle).

Returns

Neutral geantino particle hypothesis with any charge type

kaon()

ParticleHypothesis Acts::ParticleHypothesis::kaon ( )

static

Create a charged kaon particle hypothesis.

Returns

Charged kaon particle hypothesis with any charge type

muon()

ParticleHypothesis Acts::ParticleHypothesis::muon ( )

static

Create a muon particle hypothesis.

Returns

Muon particle hypothesis with any charge type

photon()

ParticleHypothesis Acts::ParticleHypothesis::photon ( )

static

Create a photon particle hypothesis.

Returns

Photon particle hypothesis with any charge type

pion()

ParticleHypothesis Acts::ParticleHypothesis::pion ( )

static

Create a charged pion particle hypothesis.

Returns

Charged pion particle hypothesis with any charge type

pion0()

ParticleHypothesis Acts::ParticleHypothesis::pion0 ( )

static

Create a neutral pion particle hypothesis.

Returns

Neutral pion particle hypothesis with any charge type

pionLike()

ParticleHypothesis Acts::ParticleHypothesis::pionLike ( float absQ )

static

Create a pion-like particle hypothesis with custom charge.

Parameters

absQ	The absolute charge value

Returns

Pion-like particle hypothesis with any charge type

proton()

ParticleHypothesis Acts::ParticleHypothesis::proton ( )

static

Create a proton particle hypothesis.

Returns

Proton particle hypothesis with any charge type