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Rivet
1.8.3
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Specialized version of the FourVector with momentum/energy functionality. More...
#include <Vector4.hh>
Classes | |
| struct | byEAscending |
| Struct for sorting by increasing energy. More... | |
| struct | byEDescending |
| Struct for sorting by decreasing energy. More... | |
Public Member Functions | |
| template<typename V4 > | |
| FourMomentum (const V4 &other) | |
| FourMomentum (const Vector< 4 > &other) | |
| FourMomentum (const double E, const double px, const double py, const double pz) | |
| double | E () const |
Get energy (time component of momentum). | |
| Vector3 | p () const |
Get 3-momentum part, . | |
| double | px () const |
Get x-component of momentum . | |
| double | py () const |
Get y-component of momentum . | |
| double | pz () const |
Get z-component of momentum . | |
| FourMomentum & | setE (double E) |
Set energy (time component of momentum). | |
| FourMomentum & | setPx (double px) |
Set x-component of momentum . | |
| FourMomentum & | setPy (double py) |
Set y-component of momentum . | |
| FourMomentum & | setPz (double pz) |
Set z-component of momentum . | |
| double | mass () const |
Get the mass (the Lorentz self-invariant). More... | |
| double | mass2 () const |
Get the squared mass (the Lorentz self-invariant). | |
| double | rapidity () const |
| Calculate the rapidity. | |
| double | pT2 () const |
Calculate the squared transverse momentum . | |
| double | pT () const |
Calculate the transverse momentum . | |
| double | Et2 () const |
Calculate the transverse energy . | |
| double | Et () const |
Calculate the transverse energy . | |
| Vector3 | boostVector () const |
Calculate the boost vector (in units of ). More... | |
| FourMomentum & | operator*= (double a) |
| Multiply by a scalar. | |
| FourMomentum & | operator/= (double a) |
| Divide by a scalar. | |
| FourMomentum & | operator+= (const FourMomentum &v) |
| Subtract from this 4-vector. NB time as well as space components are subtracted. | |
| FourMomentum & | operator-= (const FourMomentum &v) |
| Subtract from this 4-vector. NB time as well as space components are subtracted. | |
| FourMomentum | operator- () const |
| Multiply all components (time and space) by -1. | |
Public Member Functions inherited from Rivet::FourVector | |
| template<typename V4 > | |
| FourVector (const V4 &other) | |
| FourVector (const Vector< 4 > &other) | |
| FourVector (const double t, const double x, const double y, const double z) | |
| double | t () const |
| double | x () const |
| double | y () const |
| double | z () const |
| FourVector & | setT (const double t) |
| FourVector & | setX (const double x) |
| FourVector & | setY (const double y) |
| FourVector & | setZ (const double z) |
| double | invariant () const |
| double | angle (const FourVector &v) const |
| Angle between this vector and another. | |
| double | angle (const Vector3 &v3) const |
| Angle between this vector and another (3-vector) | |
| double | polarRadius2 () const |
Square of the projection of the 3-vector on to the plane This is a more efficient function than polarRadius, as it avoids the square root. Use it if you only need the squared value, or e.g. an ordering by magnitude. | |
| double | perp2 () const |
| Synonym for polarRadius2. | |
| double | rho2 () const |
| Synonym for polarRadius2. | |
| double | polarRadius () const |
Projection of 3-vector on to the plane. | |
| double | perp () const |
| Synonym for polarRadius. | |
| double | rho () const |
| Synonym for polarRadius. | |
| double | azimuthalAngle (const PhiMapping mapping=ZERO_2PI) const |
| Angle subtended by the 3-vector's projection in x-y and the x-axis. | |
| double | phi (const PhiMapping mapping=ZERO_2PI) const |
| Synonym for azimuthalAngle. | |
| double | polarAngle () const |
| Angle subtended by the 3-vector and the z-axis. | |
| double | theta () const |
| Synonym for polarAngle. | |
| double | pseudorapidity () const |
| Pseudorapidity (defined purely by the 3-vector components) | |
| double | eta () const |
| Synonym for pseudorapidity. | |
| Vector3 | vector3 () const |
| Get the spatial part of the 4-vector as a 3-vector. | |
| double | contract (const FourVector &v) const |
| Contract two 4-vectors, with metric signature (+ - - -). | |
| double | dot (const FourVector &v) const |
| Contract two 4-vectors, with metric signature (+ - - -). | |
| double | operator* (const FourVector &v) const |
| Contract two 4-vectors, with metric signature (+ - - -). | |
| FourVector & | operator*= (double a) |
| Multiply by a scalar. | |
| FourVector & | operator/= (double a) |
| Divide by a scalar. | |
| FourVector & | operator+= (const FourVector &v) |
| Add to this 4-vector. | |
| FourVector & | operator-= (const FourVector &v) |
| Subtract from this 4-vector. NB time as well as space components are subtracted. | |
| FourVector | operator- () const |
| Multiply all components (space and time) by -1. | |
Public Member Functions inherited from Rivet::Vector< 4 > | |
| Vector (const Vector< N > &other) | |
| const double & | get (const size_t index) const |
| const double & | operator[] (const size_t index) const |
| Direct access to vector elements by index. | |
| double & | operator[] (const size_t index) |
| Direct access to vector elements by index. | |
| Vector< N > & | set (const size_t index, const double value) |
| Set indexed value. | |
| size_t | size () const |
| Vector dimensionality. | |
| bool | isZero (double tolerance=1E-5) const |
| Check for nullness, allowing for numerical precision. | |
| double | mod2 () const |
Calculate the modulus-squared of a vector. . | |
| double | mod () const |
Calculate the modulus of a vector. . | |
| Vector< N > | operator- () const |
| Invert the vector. | |
| bool | operator== (const Vector< N > &a) const |
| bool | operator!= (const Vector< N > &a) const |
| bool | operator< (const Vector< N > &a) const |
| bool | operator<= (const Vector< N > &a) const |
| bool | operator> (const Vector< N > &a) const |
| bool | operator>= (const Vector< N > &a) const |
Friends | |
| FourMomentum | multiply (const double a, const FourMomentum &v) |
| FourMomentum | multiply (const FourMomentum &v, const double a) |
| FourMomentum | add (const FourMomentum &a, const FourMomentum &b) |
| FourMomentum | transform (const LorentzTransform <, const FourMomentum &v4) |
Additional Inherited Members | |
Protected Member Functions inherited from Rivet::Vector< 4 > | |
| double & | get (const size_t index) |
Specialized version of the FourVector with momentum/energy functionality.
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inline |
Calculate the boost vector (in units of
).
Referenced by Rivet::boostVector(), and Rivet::DISKinematics::project().
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inline |
Get the mass
(the Lorentz self-invariant).
For spacelike momenta, the mass will be -sqrt(|mass2|).
References Rivet::mass2(), and Rivet::sign().
Referenced by Rivet::InvMassFinalState::calc(), Rivet::Particle::mass(), and Rivet::mass().
1.8.13