ThePEG::Units Namespace Reference

The Units namespace contains the declaration of a number of classes for variables with dimension. More...

Typedefs
template<long int L, long int E, long int Q, long int DL = 1, long int DE = 1, long int DQ = 1>
using	Qty = ThePEG::Qty< std::ratio< L, DL >, std::ratio< E, DE >, std::ratio< Q, DQ > >
	adapter for the old style of naming quantities
typedef Qty< 0, 1, 0 >	Energy
	Energy.
typedef Energy	Mass
	Mass has the same unit as Energy <=> c == 1.
typedef Qty< 1, 0, 0 >	Length
	Length.
typedef Length	Time
	Time has the same unit as Length.
typedef Qty<-1, 0, 0 >	InvLength
	Inverse Length.
typedef double	Velocity
	Velocities are dimensionless fractions of c.
typedef Qty< 0, 0, 1 >	Charge
	Charge.
typedef Qty< 1, 1, 0 >	AngularMomentum
	Angular momentum.
typedef Qty<-1, 1, 0 >	Tension
	Tension.
typedef Qty< 2, 0, 0 >	Area
	Area will be assumed to be Length \(^2\).
typedef Qty<-2, 0, 0 >	InvArea
	Inverse Area.
typedef Area	CrossSection
	Cross section is an area.
Higher powers of energy.
Even higher powers can be created with similar typedefs.
typedef Qty< 0, 2, 0 >	Energy2
typedef Qty< 0, 3, 0 >	Energy3
typedef Qty< 0, 4, 0 >	Energy4
typedef Qty< 0, 5, 0 >	Energy5
typedef Qty< 0, 6, 0 >	Energy6
typedef Qty< 0, 7, 0 >	Energy7
typedef Qty< 0, 8, 0 >	Energy8
typedef Qty< 0, 9, 0 >	Energy9
typedef Qty< 0, 10, 0 >	Energy10
typedef Qty< 0, 11, 0 >	Energy11
typedef Qty< 0, 12, 0 >	Energy12
typedef Qty< 0, 1, 0, 1, 2, 1 >	SqrtEnergy
typedef Qty< 0,-1, 0, 1, 2, 1 >	InvSqrtEnergy
typedef Qty< 0, -1, 0 >	InvEnergy
typedef Qty< 0, -2, 0 >	InvEnergy2
typedef Qty< 0, -3, 0 >	InvEnergy3
typedef Qty< 0, -4, 0 >	InvEnergy4
typedef Qty< 0, -5, 0 >	InvEnergy5
typedef Qty< 0, -6, 0 >	InvEnergy6
typedef Qty< 0, -7, 0 >	InvEnergy7
typedef Qty< 0, -8, 0 >	InvEnergy8
typedef Qty< 0, -9, 0 >	InvEnergy9
typedef Qty< 0,-10, 0 >	InvEnergy10
typedef Qty< 0,-11, 0 >	InvEnergy11
typedef Qty< 0,-12, 0 >	InvEnergy12
typedef Qty< 2, 2, 0 >	Energy2XSec
	CrossSection*Energy2.
typedef Qty< 2,-2, 0 >	DiffXSec
	CrossSection/Energy2.
typedef Qty< 2,-4, 0 >	Diff2XSec
	CrossSection/Energy4.
typedef Qty< 2,-6, 0 >	Diff3XSec
	CrossSection/Energy6.
typedef Energy2	Scale
	Scale is the same as a squared energy.
typedef ThreeVector< Length >	Point
	A point in three-dimensional euclidean space.
typedef ThreeVector< Length >	Distance
	A distance in three-dimensional euclidean space.
typedef ThreeVector< double >	Axis
	A direction in three-dimensional euclidean space.
typedef ThreeVector< Energy >	Momentum3
	A momentum in three-dimensional euclidean space.
typedef ThreeVector< double >	Boost
	A three-dimensional boost vector.
typedef LorentzVector< Length >	LorentzDistance
	A distance in four-dimensional space-time.
typedef Lorentz5Vector< Length >	Lorentz5Distance
	A distance in four-dimensional space-time with an explicit invariant time component.
typedef LorentzVector< Length >	LorentzPoint
	A point in four-dimensional space-time.
typedef LorentzVector< Energy >	LorentzMomentum
	A momentum in four-dimensional space-time.
typedef Lorentz5Vector< Energy >	Lorentz5Momentum
	A momentum in four-dimensional space-time with an explicit invariant mass component.
typedef Transverse< Energy >	TransverseMomentum
	Transverse components of a momentum.

Pre-defined basic units.
constexpr Length	meter = 1.0e+3_mm
constexpr Length	millimeter = 1_mm
constexpr Length	mm = 1_mm
constexpr Length	centimeter = 10_mm
constexpr Length	micrometer = 1.0e-3_mm
constexpr Length	nanometer = 1.0e-6_mm
constexpr Length	picometer = 1.0e-9_mm
constexpr Length	femtometer = 1.0e-12_mm
constexpr Energy	keV = 1.0e-3_MeV
constexpr Energy	MeV = 1_MeV
constexpr Energy	GeV = 1_GeV
constexpr Energy	TeV = 1_TeV
constexpr Energy2	MeV2 = 1_MeV2
constexpr Energy2	GeV2 = 1_GeV2
constexpr InvEnergy	InvGeV = 1/GeV
constexpr Area	femtobarn = 1.0e-03_pb
constexpr Area	picobarn = 1_pb
constexpr Area	nanobarn = 1.0e+03_pb
constexpr Area	microbarn = 1.0e+06_pb
constexpr Area	millibarn = 1.0e+09_pb
constexpr Area	barn = 1.0e+12_pb
constexpr Charge	eplus = Charge::baseunit()
constexpr Qty< 1, 1, 0 >	hbarc = 197.326968e-15 * MeV * meter
	Planck's constant times c (PDG 2006 value 197.326968(17) MeV fm)
constexpr Qty< 1, 1, 0 >	hbar_Planck = hbarc / 1.0
	Planck's constant (PDG 2006 value 197.326968(17) MeV fm)
constexpr Length	operator""_mm (long double x)
constexpr Length	operator""_mm (unsigned long long x)
constexpr Energy	operator""_MeV (long double x)
constexpr Energy	operator""_MeV (unsigned long long x)
constexpr Energy	operator""_GeV (long double x)
constexpr Energy	operator""_GeV (unsigned long long x)
constexpr Energy	operator""_TeV (long double x)
constexpr Energy	operator""_TeV (unsigned long long x)
constexpr Energy2	operator""_MeV2 (long double x)
constexpr Energy2	operator""_MeV2 (unsigned long long x)
constexpr Energy2	operator""_GeV2 (long double x)
constexpr Energy2	operator""_GeV2 (unsigned long long x)
constexpr Area	operator""_pb (long double x)
constexpr Area	operator""_pb (unsigned long long x)

Detailed Description

The Units namespace contains the declaration of a number of classes for variables with dimension.

Currently they are all typedefs of double, but in the future the SIUnits package will be used.

The file Utilities/UnitIO.h defines helper-classes and helper functions to read and write variables with dimensions. As an example, to read and write an energy variable e in units of GeV, use: os << ounit(e, GeV) and is >> iunit(e, GeV)

Typedef Documentation

AngularMomentum

typedef Qty<1,1,0> ThePEG::Units::AngularMomentum

Angular momentum.

Definition at line 63 of file Unitsystem.h.

Area

typedef Qty<2,0,0> ThePEG::Units::Area

Area will be assumed to be Length \(^2\).

Definition at line 69 of file Unitsystem.h.

Axis

typedef ThreeVector<double> ThePEG::Units::Axis

A direction in three-dimensional euclidean space.

Definition at line 133 of file Unitsystem.h.

Boost

typedef ThreeVector<double> ThePEG::Units::Boost

A three-dimensional boost vector.

Definition at line 139 of file Unitsystem.h.

Charge

typedef Qty<0,0,1> ThePEG::Units::Charge

Charge.

Definition at line 60 of file Unitsystem.h.

CrossSection

typedef Area ThePEG::Units::CrossSection

Cross section is an area.

Definition at line 75 of file Unitsystem.h.

Diff2XSec

typedef Qty<2,-4,0> ThePEG::Units::Diff2XSec

CrossSection/Energy4.

Definition at line 118 of file Unitsystem.h.

Diff3XSec

typedef Qty<2,-6,0> ThePEG::Units::Diff3XSec

CrossSection/Energy6.

Definition at line 121 of file Unitsystem.h.

DiffXSec

typedef Qty<2,-2,0> ThePEG::Units::DiffXSec

CrossSection/Energy2.

Definition at line 115 of file Unitsystem.h.

Distance

typedef ThreeVector<Length> ThePEG::Units::Distance

A distance in three-dimensional euclidean space.

Definition at line 130 of file Unitsystem.h.

Energy

typedef Qty<0,1,0> ThePEG::Units::Energy

Energy.

Definition at line 42 of file Unitsystem.h.

Energy10

typedef Qty<0,10, 0> ThePEG::Units::Energy10

Definition at line 90 of file Unitsystem.h.

Energy11

typedef Qty<0,11, 0> ThePEG::Units::Energy11

Definition at line 91 of file Unitsystem.h.

Energy12

typedef Qty<0,12, 0> ThePEG::Units::Energy12

Definition at line 92 of file Unitsystem.h.

Energy2

typedef Qty<0, 2, 0> ThePEG::Units::Energy2

Definition at line 82 of file Unitsystem.h.

Energy2XSec

typedef Qty<2,2,0> ThePEG::Units::Energy2XSec

CrossSection*Energy2.

Definition at line 112 of file Unitsystem.h.

Energy3

typedef Qty<0, 3, 0> ThePEG::Units::Energy3

Definition at line 83 of file Unitsystem.h.

Energy4

typedef Qty<0, 4, 0> ThePEG::Units::Energy4

Definition at line 84 of file Unitsystem.h.

Energy5

typedef Qty<0, 5, 0> ThePEG::Units::Energy5

Definition at line 85 of file Unitsystem.h.

Energy6

typedef Qty<0, 6, 0> ThePEG::Units::Energy6

Definition at line 86 of file Unitsystem.h.

Energy7

typedef Qty<0, 7, 0> ThePEG::Units::Energy7

Definition at line 87 of file Unitsystem.h.

Energy8

typedef Qty<0, 8, 0> ThePEG::Units::Energy8

Definition at line 88 of file Unitsystem.h.

Energy9

typedef Qty<0, 9, 0> ThePEG::Units::Energy9

Definition at line 89 of file Unitsystem.h.

InvArea

typedef Qty<-2,0,0> ThePEG::Units::InvArea

Inverse Area.

Definition at line 72 of file Unitsystem.h.

InvEnergy

typedef Qty<0, -1, 0> ThePEG::Units::InvEnergy

Definition at line 97 of file Unitsystem.h.

InvEnergy10

typedef Qty<0,-10, 0> ThePEG::Units::InvEnergy10

Definition at line 106 of file Unitsystem.h.

InvEnergy11

typedef Qty<0,-11, 0> ThePEG::Units::InvEnergy11

Definition at line 107 of file Unitsystem.h.

InvEnergy12

typedef Qty<0,-12, 0> ThePEG::Units::InvEnergy12

Definition at line 108 of file Unitsystem.h.

InvEnergy2

typedef Qty<0, -2, 0> ThePEG::Units::InvEnergy2

Definition at line 98 of file Unitsystem.h.

InvEnergy3

typedef Qty<0, -3, 0> ThePEG::Units::InvEnergy3

Definition at line 99 of file Unitsystem.h.

InvEnergy4

typedef Qty<0, -4, 0> ThePEG::Units::InvEnergy4

Definition at line 100 of file Unitsystem.h.

InvEnergy5

typedef Qty<0, -5, 0> ThePEG::Units::InvEnergy5

Definition at line 101 of file Unitsystem.h.

InvEnergy6

typedef Qty<0, -6, 0> ThePEG::Units::InvEnergy6

Definition at line 102 of file Unitsystem.h.

InvEnergy7

typedef Qty<0, -7, 0> ThePEG::Units::InvEnergy7

Definition at line 103 of file Unitsystem.h.

InvEnergy8

typedef Qty<0, -8, 0> ThePEG::Units::InvEnergy8

Definition at line 104 of file Unitsystem.h.

InvEnergy9

typedef Qty<0, -9, 0> ThePEG::Units::InvEnergy9

Definition at line 105 of file Unitsystem.h.

InvLength

typedef Qty<-1,0,0> ThePEG::Units::InvLength

Inverse Length.

Definition at line 54 of file Unitsystem.h.

InvSqrtEnergy

typedef Qty<0,-1,0, 1,2,1> ThePEG::Units::InvSqrtEnergy

Definition at line 95 of file Unitsystem.h.

Length

typedef Qty<1,0,0> ThePEG::Units::Length

Length.

Definition at line 48 of file Unitsystem.h.

Lorentz5Distance

typedef Lorentz5Vector<Length> ThePEG::Units::Lorentz5Distance

A distance in four-dimensional space-time with an explicit invariant time component.

Definition at line 146 of file Unitsystem.h.

Lorentz5Momentum

typedef Lorentz5Vector<Energy> ThePEG::Units::Lorentz5Momentum

A momentum in four-dimensional space-time with an explicit invariant mass component.

Definition at line 156 of file Unitsystem.h.

LorentzDistance

typedef LorentzVector<Length> ThePEG::Units::LorentzDistance

A distance in four-dimensional space-time.

Definition at line 142 of file Unitsystem.h.

LorentzMomentum

typedef LorentzVector<Energy> ThePEG::Units::LorentzMomentum

A momentum in four-dimensional space-time.

Definition at line 152 of file Unitsystem.h.

LorentzPoint

typedef LorentzVector<Length> ThePEG::Units::LorentzPoint

A point in four-dimensional space-time.

Definition at line 149 of file Unitsystem.h.

Mass

typedef Energy ThePEG::Units::Mass

Mass has the same unit as Energy <=> c == 1.

Definition at line 45 of file Unitsystem.h.

Momentum3

typedef ThreeVector<Energy> ThePEG::Units::Momentum3

A momentum in three-dimensional euclidean space.

Definition at line 136 of file Unitsystem.h.

Point

typedef ThreeVector<Length> ThePEG::Units::Point

A point in three-dimensional euclidean space.

Definition at line 127 of file Unitsystem.h.

Qty

template<long int L, long int E, long int Q, long int DL = 1, long int DE = 1, long int DQ = 1>

using ThePEG::Units::Qty = typedef ThePEG::Qty<std::ratio<L,DL>, std::ratio<E,DE>, std::ratio<Q,DQ> >

adapter for the old style of naming quantities

Definition at line 39 of file Unitsystem.h.

Scale

typedef Energy2 ThePEG::Units::Scale

Scale is the same as a squared energy.

Definition at line 124 of file Unitsystem.h.

SqrtEnergy

typedef Qty<0, 1,0, 1,2,1> ThePEG::Units::SqrtEnergy

Definition at line 94 of file Unitsystem.h.

Tension

typedef Qty<-1,1,0> ThePEG::Units::Tension

Tension.

Definition at line 66 of file Unitsystem.h.

Time

typedef Length ThePEG::Units::Time

Time has the same unit as Length.

<=> c == 1.

Definition at line 51 of file Unitsystem.h.

TransverseMomentum

typedef Transverse<Energy> ThePEG::Units::TransverseMomentum

Transverse components of a momentum.

Definition at line 159 of file Unitsystem.h.

Velocity

typedef double ThePEG::Units::Velocity

Velocities are dimensionless fractions of c.

Definition at line 57 of file Unitsystem.h.

Function Documentation

operator""_GeV() [1/2]

constexpr Energy ThePEG::Units::operator""_GeV ( long double  x )

constexpr

Definition at line 186 of file Unitsystem.h.

operator""_GeV() [2/2]

constexpr Energy ThePEG::Units::operator""_GeV ( unsigned long long  x )

constexpr

Definition at line 189 of file Unitsystem.h.

operator""_GeV2() [1/2]

constexpr Energy2 ThePEG::Units::operator""_GeV2 ( long double  x )

constexpr

Definition at line 214 of file Unitsystem.h.

operator""_GeV2() [2/2]

constexpr Energy2 ThePEG::Units::operator""_GeV2 ( unsigned long long  x )

constexpr

Definition at line 217 of file Unitsystem.h.

operator""_MeV() [1/2]

constexpr Energy ThePEG::Units::operator""_MeV ( long double  x )

constexpr

Definition at line 179 of file Unitsystem.h.

operator""_MeV() [2/2]

constexpr Energy ThePEG::Units::operator""_MeV ( unsigned long long  x )

constexpr

Definition at line 182 of file Unitsystem.h.

operator""_MeV2() [1/2]

constexpr Energy2 ThePEG::Units::operator""_MeV2 ( long double  x )

constexpr

Definition at line 207 of file Unitsystem.h.

operator""_MeV2() [2/2]

constexpr Energy2 ThePEG::Units::operator""_MeV2 ( unsigned long long  x )

constexpr

Definition at line 210 of file Unitsystem.h.

operator""_mm() [1/2]

constexpr Length ThePEG::Units::operator""_mm ( long double  x )

constexpr

Definition at line 163 of file Unitsystem.h.

operator""_mm() [2/2]

constexpr Length ThePEG::Units::operator""_mm ( unsigned long long  x )

constexpr

Definition at line 166 of file Unitsystem.h.

operator""_pb() [1/2]

constexpr Area ThePEG::Units::operator""_pb ( long double  x )

constexpr

Definition at line 227 of file Unitsystem.h.

operator""_pb() [2/2]

constexpr Area ThePEG::Units::operator""_pb ( unsigned long long  x )

constexpr

Definition at line 230 of file Unitsystem.h.

operator""_TeV() [1/2]

constexpr Energy ThePEG::Units::operator""_TeV ( long double  x )

constexpr

Definition at line 193 of file Unitsystem.h.

operator""_TeV() [2/2]

constexpr Energy ThePEG::Units::operator""_TeV ( unsigned long long  x )

constexpr

Definition at line 196 of file Unitsystem.h.

Variable Documentation

barn

constexpr Area ThePEG::Units::barn = 1.0e+12_pb

constexpr

Definition at line 239 of file Unitsystem.h.

centimeter

constexpr Length ThePEG::Units::centimeter = 10_mm

constexpr

Definition at line 173 of file Unitsystem.h.

eplus

constexpr Charge ThePEG::Units::eplus = Charge::baseunit()

constexpr

Definition at line 241 of file Unitsystem.h.

femtobarn

constexpr Area ThePEG::Units::femtobarn = 1.0e-03_pb

constexpr

Definition at line 234 of file Unitsystem.h.

femtometer

constexpr Length ThePEG::Units::femtometer = 1.0e-12_mm

constexpr

Definition at line 177 of file Unitsystem.h.

GeV

constexpr Energy ThePEG::Units::GeV = 1_GeV

constexpr

Definition at line 202 of file Unitsystem.h.

GeV2

constexpr Energy2 ThePEG::Units::GeV2 = 1_GeV2

constexpr

Definition at line 222 of file Unitsystem.h.

hbar_Planck

constexpr Qty<1,1,0> ThePEG::Units::hbar_Planck = hbarc / 1.0

constexpr

Planck's constant (PDG 2006 value 197.326968(17) MeV fm)

Definition at line 247 of file Unitsystem.h.

Referenced by ThePEG::ParticleData::spin().

hbarc

constexpr Qty<1,1,0> ThePEG::Units::hbarc = 197.326968e-15 * MeV * meter

constexpr

Planck's constant times c (PDG 2006 value 197.326968(17) MeV fm)

Definition at line 245 of file Unitsystem.h.

Referenced by ThePEG::ParticleData::cTau(), ThePEG::HardSphereYukawaFormFactor::formFactor(), and ThePEG::ParticleData::width().

InvGeV

constexpr InvEnergy ThePEG::Units::InvGeV = 1/GeV

constexpr

Definition at line 224 of file Unitsystem.h.

keV

constexpr Energy ThePEG::Units::keV = 1.0e-3_MeV

constexpr

Definition at line 200 of file Unitsystem.h.

meter

constexpr Length ThePEG::Units::meter = 1.0e+3_mm

constexpr

Definition at line 170 of file Unitsystem.h.

MeV

constexpr Energy ThePEG::Units::MeV = 1_MeV

constexpr

Definition at line 201 of file Unitsystem.h.

MeV2

constexpr Energy2 ThePEG::Units::MeV2 = 1_MeV2

constexpr

Definition at line 221 of file Unitsystem.h.

microbarn

constexpr Area ThePEG::Units::microbarn = 1.0e+06_pb

constexpr

Definition at line 237 of file Unitsystem.h.

micrometer

constexpr Length ThePEG::Units::micrometer = 1.0e-3_mm

constexpr

Definition at line 174 of file Unitsystem.h.

millibarn

constexpr Area ThePEG::Units::millibarn = 1.0e+09_pb

constexpr

Definition at line 238 of file Unitsystem.h.

millimeter

constexpr Length ThePEG::Units::millimeter = 1_mm

constexpr

Definition at line 171 of file Unitsystem.h.

mm

constexpr Length ThePEG::Units::mm = 1_mm

constexpr

Definition at line 172 of file Unitsystem.h.

nanobarn

constexpr Area ThePEG::Units::nanobarn = 1.0e+03_pb

constexpr

Definition at line 236 of file Unitsystem.h.

nanometer

constexpr Length ThePEG::Units::nanometer = 1.0e-6_mm

constexpr

Definition at line 175 of file Unitsystem.h.

picobarn

constexpr Area ThePEG::Units::picobarn = 1_pb

constexpr

Definition at line 235 of file Unitsystem.h.

picometer

constexpr Length ThePEG::Units::picometer = 1.0e-9_mm

constexpr

Definition at line 176 of file Unitsystem.h.

TeV

constexpr Energy ThePEG::Units::TeV = 1_TeV

constexpr

Definition at line 203 of file Unitsystem.h.