A deeply inelastic scattering event. More...

#include <EventDis.h>

Inheritance diagram for erhic::EventDis:

Public Member Functions
virtual	~EventDis ()
	Destructor. More...

	EventDis ()
	Default constructor. More...

	EventDis (const EventDis &)
	Constructor copying another event's kinematics. More...

EventDis &	operator= (const EventDis &)
	Assign another event's kinematics to this EventDis. More...

virtual Double_t	GetX () const
	Returns Bjorken-x of the event. More...

virtual Double_t	GetQ2 () const
	Returns the four-momentum transfer (exchange boson mass) Q². More...

virtual Double_t	GetY () const
	Returns the event inelasticity. More...

virtual Double_t	GetYPlus () const
	Returns Y+ = y² / (1 + (1-y)²) More...

virtual Double_t	GetW2 () const
	Returns the invariant mass of the hadronic final state. More...

virtual Double_t	GetNu () const
	Returns the exchange boson energy in the beam hadron rest frame. More...

virtual double	GetXDoubleAngle () const
	Returns Bjorken x computed via the double-angle method. More...

virtual double	GetQ2DoubleAngle () const
	Returns Q-squared computed via the double-angle method. More...

virtual double	GetYDoubleAngle () const
	Returns inelasticity computed via the double-angle method. More...

virtual double	GetW2DoubleAngle () const
	Returns W-squared computed via the double-angle method. More...

virtual double	GetXJacquetBlondel () const
	Returns Bjorken x computed via the Jacquet-Blondel method. More...

virtual double	GetQ2JacquetBlondel () const
	Returns Q-squared computed via the Jacquet-Blondel method. More...

virtual double	GetYJacquetBlondel () const
	Returns inelasticity computed via the Jacquet-Blondel method. More...

virtual double	GetW2JacquetBlondel () const
	Returns W-squared computed via the Jacquet-Blondel method. More...

virtual void	SetLeptonKinematics (const DisKinematics &)
	Set the kinematics computed from the scattered lepton. More...

virtual void	SetJacquetBlondelKinematics (const DisKinematics &)
	Set the kinematics computed from the Jacquet-Blondel method. More...

virtual void	SetDoubleAngleKinematics (const DisKinematics &)
	Set the kinematics computed from the double-angle method. More...

virtual const VirtualParticle *	BeamLepton () const =0
	Returns a pointer to the incident lepton beam particle. More...

virtual const VirtualParticle *	BeamHadron () const =0
	Returns a pointer to the incident hadron beam particle. More...

virtual const VirtualParticle *	ExchangeBoson () const =0
	Returns a pointer to the exchanged boson. More...

virtual const VirtualParticle *	ScatteredLepton () const =0
	Returns a pointer to the lepton beam particle after scattering. More...

virtual void	CopyKinematics (const EventDis &)
	Copy the kinematics from another event to this event. More...

Public Member Functions inherited from erhic::VirtualEvent
virtual	~VirtualEvent ()
	Destructor. More...

virtual const VirtualParticle *	GetTrack (UInt_t) const =0
	Returns the nth track from the event. More...

virtual VirtualParticle *	GetTrack (UInt_t)=0
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...

virtual UInt_t	GetNTracks () const =0
	Returns the number of tracks in the event. More...

virtual void	HadronicFinalState (ParticlePtrList &) const
	Populate a track list with the hadronic final-state. More...

Public Attributes
Double32_t	x
	Bjorken scaling variable. More...

Double32_t	QSquared
	Q² calculated from scattered electron. More...

Double32_t	y
	Inelasticity. More...

Double32_t	WSquared
	Invariant mass of the hadronic system. More...

Double32_t	nu
	Energy transfer from the electron. More...

Double32_t	yJB
	y calculated via the Jacquet-Blondel method More...

Double32_t	QSquaredJB
	Q2 calculated via the Jacquet-Blondel method. More...

Double32_t	xJB
	x calculated via the Jacquet-Blondel method More...

Double32_t	WSquaredJB
	W2 calculated via the Jacquet-Blondel method. More...

Double32_t	yDA
	y calculated via the double-angle method More...

Double32_t	QSquaredDA
	Q2 calculated via the double-angle method. More...

Double32_t	xDA
	x calculated via the double-angle method More...

Double32_t	WSquaredDA
	W2 calculated via the double-angle method. More...

Additional Inherited Members
Public Types inherited from erhic::VirtualEvent
typedef std::vector< const erhic::VirtualParticle * >	ParticlePtrList
	typedef for a track pointer collection. More...

Detailed Description

A deeply inelastic scattering event.

Stores kinematics computed by different methods:

Using the scattered electron
Jacquet-Blondel method (uses hadrons)
Double-angle method (uses both hadrons and the scattered electron)

This is an abstract class, as it does not implement track methods inherited from VirtualEvent. The user must implement the appropriate methods for their track type in an inheriting class.

Definition at line 37 of file EventDis.h.

Constructor & Destructor Documentation

◆ ~EventDis()

erhic::EventDis::~EventDis ( )

virtual

Destructor.

Definition at line 16 of file EventDis.cxx.

◆ EventDis() [1/2]

erhic::EventDis::EventDis ( )

Default constructor.

Todo:: Consider initialising float fields to zero, not NAN.

e.g. in smeared output, particles outside acceptance retain default values, therefore in e.g. jacquet-blondel calculations, those not detected screw up the calculation because they have E, p = NAN, not zero!

Definition at line 24 of file EventDis.cxx.

◆ EventDis() [2/2]

erhic::EventDis::EventDis ( const EventDis & that )

Constructor copying another event's kinematics.

Definition at line 40 of file EventDis.cxx.

Member Function Documentation

◆ BeamHadron()

virtual const VirtualParticle* erhic::EventDis::BeamHadron ( ) const

pure virtual

Returns a pointer to the incident hadron beam particle.

Returns NULL if the particle cannot be located in the event. IMPORTANT - DO NOT DELETE THE POINTER OR BAD THINGS WILL HAPPEN!

Implemented in Smear::Event, and erhic::EventMC.

◆ BeamLepton()

virtual const VirtualParticle* erhic::EventDis::BeamLepton ( ) const

pure virtual

Returns a pointer to the incident lepton beam particle.

Returns NULL if the particle cannot be located in the event. IMPORTANT - DO NOT DELETE THE POINTER OR BAD THINGS WILL HAPPEN!

Implemented in Smear::Event, and erhic::EventMC.

◆ CopyKinematics()

void erhic::EventDis::CopyKinematics ( const EventDis & that )

virtual

Copy the kinematics from another event to this event.

Definition at line 52 of file EventDis.cxx.

◆ ExchangeBoson()

virtual const VirtualParticle* erhic::EventDis::ExchangeBoson ( ) const

pure virtual

Returns a pointer to the exchanged boson.

Returns NULL if the particle cannot be located in the event. IMPORTANT - DO NOT DELETE THE POINTER OR BAD THINGS WILL HAPPEN!

Implemented in Smear::Event, erhic::EventMC, erhic::EventDjangoh, and erhic::EventPepsi.

◆ GetNu()

Double_t erhic::EventDis::GetNu ( ) const

inlinevirtual

Returns the exchange boson energy in the beam hadron rest frame.

nu = q.p/M

Definition at line 202 of file EventDis.h.

◆ GetQ2()

Double_t erhic::EventDis::GetQ2 ( ) const

inlinevirtual

Returns the four-momentum transfer (exchange boson mass) Q².

Q² = 2EE(1+cos(theta)) = (e-e)²

Definition at line 206 of file EventDis.h.

◆ GetQ2DoubleAngle()

double erhic::EventDis::GetQ2DoubleAngle ( ) const

inlinevirtual

Returns Q-squared computed via the double-angle method.

Definition at line 226 of file EventDis.h.

◆ GetQ2JacquetBlondel()

double erhic::EventDis::GetQ2JacquetBlondel ( ) const

inlinevirtual

Returns Q-squared computed via the Jacquet-Blondel method.

Definition at line 242 of file EventDis.h.

◆ GetW2()

Double_t erhic::EventDis::GetW2 ( ) const

inlinevirtual

Returns the invariant mass of the hadronic final state.

W² = M² + Q²(1-x)/x

Definition at line 210 of file EventDis.h.

◆ GetW2DoubleAngle()

double erhic::EventDis::GetW2DoubleAngle ( ) const

inlinevirtual

Returns W-squared computed via the double-angle method.

Definition at line 234 of file EventDis.h.

◆ GetW2JacquetBlondel()

double erhic::EventDis::GetW2JacquetBlondel ( ) const

inlinevirtual

Returns W-squared computed via the Jacquet-Blondel method.

Definition at line 250 of file EventDis.h.

◆ GetX()

Double_t erhic::EventDis::GetX ( ) const

inlinevirtual

Returns Bjorken-x of the event.

x_B = Q²/(2p.q)

Definition at line 198 of file EventDis.h.

◆ GetXDoubleAngle()

double erhic::EventDis::GetXDoubleAngle ( ) const

inlinevirtual

Returns Bjorken x computed via the double-angle method.

Definition at line 222 of file EventDis.h.

◆ GetXJacquetBlondel()

double erhic::EventDis::GetXJacquetBlondel ( ) const

inlinevirtual

Returns Bjorken x computed via the Jacquet-Blondel method.

Definition at line 238 of file EventDis.h.

◆ GetY()

Double_t erhic::EventDis::GetY ( ) const

inlinevirtual

Returns the event inelasticity.

y = (p.q)/(p.e)

Definition at line 214 of file EventDis.h.

◆ GetYDoubleAngle()

double erhic::EventDis::GetYDoubleAngle ( ) const

inlinevirtual

Returns inelasticity computed via the double-angle method.

Definition at line 230 of file EventDis.h.

◆ GetYJacquetBlondel()

double erhic::EventDis::GetYJacquetBlondel ( ) const

inlinevirtual

Returns inelasticity computed via the Jacquet-Blondel method.

Definition at line 246 of file EventDis.h.

◆ GetYPlus()

Double_t erhic::EventDis::GetYPlus ( ) const

inlinevirtual

Returns Y+ = y² / (1 + (1-y)²)

Definition at line 218 of file EventDis.h.

◆ operator=()

EventDis & erhic::EventDis::operator= ( const EventDis & that )

Assign another event's kinematics to this EventDis.

Definition at line 45 of file EventDis.cxx.

◆ ScatteredLepton()

virtual const VirtualParticle* erhic::EventDis::ScatteredLepton ( ) const

pure virtual

Returns a pointer to the lepton beam particle after scattering.

Returns NULL if the particle cannot be located in the event. IMPORTANT - DO NOT DELETE THE POINTER OR BAD THINGS WILL HAPPEN!

Implemented in erhic::EventPythia, Smear::Event, erhic::EventMC, erhic::EventDjangoh, and erhic::EventPepsi.

◆ SetDoubleAngleKinematics()

void erhic::EventDis::SetDoubleAngleKinematics ( const DisKinematics & kin )

virtual

Set the kinematics computed from the double-angle method.

Definition at line 76 of file EventDis.cxx.

◆ SetJacquetBlondelKinematics()

void erhic::EventDis::SetJacquetBlondelKinematics ( const DisKinematics & kin )

virtual

Set the kinematics computed from the Jacquet-Blondel method.

Definition at line 69 of file EventDis.cxx.

◆ SetLeptonKinematics()

void erhic::EventDis::SetLeptonKinematics ( const DisKinematics & kin )

virtual

Set the kinematics computed from the scattered lepton.

Definition at line 61 of file EventDis.cxx.

Member Data Documentation

◆ nu

Double32_t erhic::EventDis::nu

Energy transfer from the electron.

Definition at line 185 of file EventDis.h.

◆ QSquared

Double32_t erhic::EventDis::QSquared

Q² calculated from scattered electron.

Definition at line 182 of file EventDis.h.

◆ QSquaredDA

Double32_t erhic::EventDis::QSquaredDA

Q2 calculated via the double-angle method.

Definition at line 191 of file EventDis.h.

◆ QSquaredJB

Double32_t erhic::EventDis::QSquaredJB

Q2 calculated via the Jacquet-Blondel method.

Definition at line 187 of file EventDis.h.

◆ WSquared

Double32_t erhic::EventDis::WSquared

Invariant mass of the hadronic system.

Definition at line 184 of file EventDis.h.

◆ WSquaredDA

Double32_t erhic::EventDis::WSquaredDA

W2 calculated via the double-angle method.

Definition at line 193 of file EventDis.h.

◆ WSquaredJB

Double32_t erhic::EventDis::WSquaredJB

W2 calculated via the Jacquet-Blondel method.

Definition at line 189 of file EventDis.h.

◆ x

Double32_t erhic::EventDis::x

Bjorken scaling variable.

Definition at line 181 of file EventDis.h.

◆ xDA

Double32_t erhic::EventDis::xDA

x calculated via the double-angle method

Definition at line 192 of file EventDis.h.

◆ xJB

Double32_t erhic::EventDis::xJB

x calculated via the Jacquet-Blondel method

Definition at line 188 of file EventDis.h.

◆ y

Double32_t erhic::EventDis::y

Inelasticity.

Definition at line 183 of file EventDis.h.

◆ yDA

Double32_t erhic::EventDis::yDA

y calculated via the double-angle method

Definition at line 190 of file EventDis.h.

◆ yJB

Double32_t erhic::EventDis::yJB

y calculated via the Jacquet-Blondel method

Definition at line 186 of file EventDis.h.

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

Public Member Functions

Public Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ~EventDis()

◆ EventDis() [1/2]

◆ EventDis() [2/2]

Member Function Documentation

◆ BeamHadron()

◆ BeamLepton()

◆ CopyKinematics()

◆ ExchangeBoson()

◆ GetNu()

◆ GetQ2()

◆ GetQ2DoubleAngle()

◆ GetQ2JacquetBlondel()

◆ GetW2()

◆ GetW2DoubleAngle()

◆ GetW2JacquetBlondel()

◆ GetX()

◆ GetXDoubleAngle()

◆ GetXJacquetBlondel()

◆ GetY()

◆ GetYDoubleAngle()

◆ GetYJacquetBlondel()

◆ GetYPlus()

◆ operator=()

◆ ScatteredLepton()

◆ SetDoubleAngleKinematics()

◆ SetJacquetBlondelKinematics()

◆ SetLeptonKinematics()

Member Data Documentation

◆ nu

◆ QSquared

◆ QSquaredDA

◆ QSquaredJB

◆ WSquared

◆ WSquaredDA

◆ WSquaredJB

◆ x

◆ xDA

◆ xJB

◆ y

◆ yDA

◆ yJB