Abstract interface for an object that computes the elements a hadron tensor $W^{\mu\nu}$ . Also computes the contraction of the hadron tensor with the lepton tensor $L_{\mu\nu}W^{\mu\nu}$ for one or more kinds of projectile (e.g., neutrinos, electrons) More...

#include <HadronTensorI.h>

Inheritance diagram for genie::HadronTensorI:

[legend]

Public Member Functions

virtual ~HadronTensorI ()

virtual double contraction (const Interaction *interaction, double Q_value) const =0

int pdg () const

PDG code of the target nucleus.

int Z () const

Atomic number of the target nucleus.

int A () const

Mass number of the target nucleus.

void set_pdg (int pdg)

Set the target nucleus PDG code.

virtual double q0Min () const =0

virtual double q0Max () const =0

virtual double qMagMin () const =0

virtual double qMagMax () const =0

Tensor elements

Functions that return the elements of the tensor.

Parameters

[in]	q0	The energy transfer in the lab frame (GeV)
[in]	q_mag	The magnitude of the 3-momentum transfer $\left\|\overrightarrow{q}\right\|$ in the lab frame (GeV)

Return values

std::complex<double> The value of the hadronic tensor element

virtual std::complex< double > tt (double q0, double q_mag) const =0

The tensor element $W^{00}$ .

virtual std::complex< double > tx (double q0, double q_mag) const =0

The tensor element $W^{0x}$ .

virtual std::complex< double > ty (double q0, double q_mag) const =0

The tensor element $W^{0y}$ .

virtual std::complex< double > tz (double q0, double q_mag) const =0

The tensor element $W^{0z}$ .

virtual std::complex< double > xt (double q0, double q_mag) const =0

The tensor element $W^{x0} = (W^{0x})^*$ .

virtual std::complex< double > xx (double q0, double q_mag) const =0

The tensor element $W^{xx}$ .

virtual std::complex< double > xy (double q0, double q_mag) const =0

The tensor element $W^{xy}$ .

virtual std::complex< double > xz (double q0, double q_mag) const =0

The tensor element $W^{xz}$ .

virtual std::complex< double > yt (double q0, double q_mag) const =0

The tensor element $W^{y0} = (W^{0y})^*$ .

virtual std::complex< double > yx (double q0, double q_mag) const =0

The tensor element $W^{yx} = (W^{xy})^*$ .

virtual std::complex< double > yy (double q0, double q_mag) const =0

The tensor element $W^{yy}$ .

virtual std::complex< double > yz (double q0, double q_mag) const =0

The tensor element $W^{yz}$ .

virtual std::complex< double > zt (double q0, double q_mag) const =0

The tensor element $W^{z0} = (W^{0z})^*$ .

virtual std::complex< double > zx (double q0, double q_mag) const =0

The tensor element $W^{zx} = (W^{xz})^*$ .

virtual std::complex< double > zy (double q0, double q_mag) const =0

The tensor element $W^{zy} = (W^{yz})^*$ .

virtual std::complex< double > zz (double q0, double q_mag) const =0

The tensor element $W^{zz}$ .

Protected Member Functions
	HadronTensorI (int pdg=0)
	HadronTensorI (int Z, int A)
	PDG code for the target nucleus represented by the tensor.

Protected Attributes
int	fTargetPDG

Detailed Description

Abstract interface for an object that computes the elements a hadron tensor $W^{\mu\nu}$ . Also computes the contraction of the hadron tensor with the lepton tensor $L_{\mu\nu}W^{\mu\nu}$ for one or more kinds of projectile (e.g., neutrinos, electrons)

Author: Steven Gardiner <gardiner \at fnal.gov> Liang Liu <liangliu \at fnal.gov> Fermi National Accelerator Laboratory

Created:\n August 23, 2018

License:\n Copyright (c) 2003-2025, The GENIE Collaboration: For the full text of the license visit http://copyright.genie-mc.org or see $GENIE/LICENSE

Definition at line 95 of file HadronTensorI.h.

Constructor & Destructor Documentation

◆ ~HadronTensorI()

virtual genie::HadronTensorI::~HadronTensorI ( )

inlinevirtual

Definition at line 99 of file HadronTensorI.h.

99{}

◆ HadronTensorI() [1/2]

genie::HadronTensorI::HadronTensorI ( int pdg = 0 )

inlineprotected

Definition at line 201 of file HadronTensorI.h.

201: fTargetPDG(pdg) {}

genie::HadronTensorI::pdg

int pdg() const

PDG code of the target nucleus.

Definition HadronTensorI.h:170

genie::HadronTensorI::fTargetPDG

int fTargetPDG

Definition HadronTensorI.h:207

References fTargetPDG, and pdg().

Referenced by genie::LabFrameHadronTensorI::LabFrameHadronTensorI(), and genie::LabFrameHadronTensorI::LabFrameHadronTensorI().

◆ HadronTensorI() [2/2]

genie::HadronTensorI::HadronTensorI	(	int	Z,
		int	A )

inlineprotected

PDG code for the target nucleus represented by the tensor.

Definition at line 203 of file HadronTensorI.h.

References A(), fTargetPDG, pdg(), and Z().

Member Function Documentation

◆ A()

int genie::HadronTensorI::A ( ) const

inline

Mass number of the target nucleus.

Definition at line 176 of file HadronTensorI.h.

176{ return genie::pdg::IonPdgCodeToA(fTargetPDG); }

genie::pdg::IonPdgCodeToA

int IonPdgCodeToA(int pdgc)

Definition PDGUtils.cxx:63

References fTargetPDG, and genie::pdg::IonPdgCodeToA().

Referenced by HadronTensorI(), genie::LabFrameHadronTensorI::LabFrameHadronTensorI(), and genie::TabulatedLabFrameHadronTensor::TabulatedLabFrameHadronTensor().

◆ contraction()

virtual double genie::HadronTensorI::contraction	(	const Interaction *	interaction,
		double	Q_value ) const

pure virtual

Computes the contraction $L_{\mu\nu}W^{\mu\nu}$ of the hadron tensor with the appropriate lepton tensor for a given type of projectile (e.g., neutrino, electron)

Parameters

[in]	interaction	An Interaction object storing information about the initial and final states
[in]	Q_value	The Q-value that should be used to correct the energy transfer (GeV)

Returns: The tensor contraction $L_{\mu\nu}W^{\mu\nu}$ (GeV)

Implemented in genie::LabFrameHadronTensorI.

◆ pdg()

int genie::HadronTensorI::pdg ( ) const

inline

PDG code of the target nucleus.

Definition at line 170 of file HadronTensorI.h.

170{ return fTargetPDG; }

References fTargetPDG.

Referenced by HadronTensorI(), HadronTensorI(), genie::LabFrameHadronTensorI::LabFrameHadronTensorI(), and set_pdg().

◆ q0Max()

virtual double genie::HadronTensorI::q0Max ( ) const

pure virtual

The maximum value of the energy transfer $q^0$ for which this hadron tensor may be used to compute cross sections

Implemented in genie::TabulatedLabFrameHadronTensor.

Referenced by genie::SuSAv2MECPXSec::PairRatio(), genie::NievesSimoVacasMECPXSec2016::XSec(), genie::SuSAv2MECPXSec::XSec(), and genie::SuSAv2QELPXSec::XSec().

◆ q0Min()

virtual double genie::HadronTensorI::q0Min ( ) const

pure virtual

The minimum value of the energy transfer $q^0$ for which this hadron tensor may be used to compute cross sections

Implemented in genie::TabulatedLabFrameHadronTensor.

Referenced by genie::SuSAv2MECPXSec::PairRatio(), genie::NievesSimoVacasMECPXSec2016::XSec(), genie::SuSAv2MECPXSec::XSec(), and genie::SuSAv2QELPXSec::XSec().

◆ qMagMax()

virtual double genie::HadronTensorI::qMagMax ( ) const

pure virtual

The maximum value of the magnitude of the 3-momentum transfer $\left|\overrightarrow{q}\right|$ for which this hadron tensor may be used to compute cross sections

Implemented in genie::TabulatedLabFrameHadronTensor.

Referenced by genie::SuSAv2MECPXSec::PairRatio(), genie::NievesSimoVacasMECPXSec2016::XSec(), genie::SuSAv2MECPXSec::XSec(), and genie::SuSAv2QELPXSec::XSec().

◆ qMagMin()

virtual double genie::HadronTensorI::qMagMin ( ) const

pure virtual

The minimum value of the magnitude of the 3-momentum transfer $\left|\overrightarrow{q}\right|$ for which this hadron tensor may be used to compute cross sections

Implemented in genie::TabulatedLabFrameHadronTensor.

Referenced by genie::SuSAv2MECPXSec::PairRatio(), genie::NievesSimoVacasMECPXSec2016::XSec(), genie::SuSAv2MECPXSec::XSec(), and genie::SuSAv2QELPXSec::XSec().