siscone::Cmomentum Class Reference
base class for dynamic coordinates management More...
#include <momentum.h>
Collaboration diagram for siscone::Cmomentum:
Public Member Functions | |
| Cmomentum () | |
| default ctor | |
| Cmomentum (double _px, double _py, double _pz, double _E) | |
| ctor with initialisation | |
| Cmomentum (double _eta, double _phi, Creference _ref) | |
| ctor with detailed initialisation | |
| ~Cmomentum () | |
| default dtor | |
| double | perp () const |
| computes pT | |
| double | perp2 () const |
| computes pT^2 | |
| double | mass () const |
| computes m | |
| double | mass2 () const |
| computes m^2 | |
| double | perpmass () const |
| transverse mass, mt = sqrt(pt^2+m^2) = sqrt(E^2 - pz^2) | |
| double | perpmass2 () const |
| transverse mass squared, mt^2 = pt^2+m^2 = E^2 - pz^2 | |
| double | Et () const |
| computes transverse energy | |
| double | Et2 () const |
| computes transverse energy (squared) | |
| Cmomentum & | operator= (const Cmomentum &v) |
| assignment of vectors | |
| const Cmomentum | operator+ (const Cmomentum &v) |
| addition of vectors !!! WARNING !!! no updating of eta and phi !!! | |
| Cmomentum & | operator+= (const Cmomentum &v) |
| incrementation of vectors !!! WARNING !!! no updating of eta and phi !!! | |
| Cmomentum & | operator-= (const Cmomentum &v) |
| decrementation of vectors !!! WARNING !!! no updating of eta and phi !!! | |
| void | build_etaphi () |
| build eta-phi from 4-momentum info !!! WARNING !!! !!! computing eta and phi is time-consuming !!! !!! use this whenever you need eta or phi !!! !!! automatically called for single-particle !!! | |
Public Attributes | |
| double | px |
| x-momentum | |
| double | py |
| y-momentum | |
| double | pz |
| z-momentum | |
| double | E |
| energy | |
| double | eta |
| particle pseudo-rapidity | |
| double | phi |
| particle azimuthal angle | |
| int | parent_index |
| particle number in the parent list | |
| int | index |
| internal particle number | |
| Creference | ref |
| reference number for the vector | |
Detailed Description
base class for dynamic coordinates managementThis class contains the information for particle or group of particles management. It includes all Lorentz properties as well as tools for summing them. Note: 'sums' over phi angles are indeed averages. This allows to deal with periodicity at each step
Definition at line 49 of file momentum.h.
The documentation for this class was generated from the following files:
- siscone/momentum.h
- siscone/momentum.cpp