class for the computation of jet areas. More...
#include <area.h>
Public Member Functions | |
| Carea () | |
| default ctor | |
| ~Carea () | |
| default dtor | |
| int | compute_areas (std::vector< Cmomentum > &_particles, double _radius, double _f, int _n_pass_max=0, Esplit_merge_scale _split_merge_scale=SM_pttilde, bool _hard_only=false) |
| compute the jet areas from a given particle set. | |
| int | compute_active_areas (std::vector< Cmomentum > &_particles, double _radius, double _f, int _n_pass_max=0, Esplit_merge_scale _split_merge_scale=SM_pttilde, bool _hard_only=false) |
| compute the jet active areas from a given particle set. | |
| int | compute_passive_areas (std::vector< Cmomentum > &_particles, double _radius, double _f, int _n_pass_max=0, Esplit_merge_scale _split_merge_scale=SM_pttilde) |
| compute the jet passive areas from a given particle set. | |
Public Attributes | |
| int | grid_size |
| size of the grid we add soft particles on (N_soft=(grid_size^2)) | |
| double | grid_eta_max |
| maximal value of eta we add soft particles on | |
| double | grid_shift |
| fractional (random) displacement of the points om the grid | |
| double | pt_soft |
| pt of the soft particles added | |
| double | pt_shift |
| amplitude of the pt random shift | |
| double | pt_soft_min |
| pt_min used in SM to compute passive areas | |
| std::vector< Cjet_area > | jet_areas |
| jets with their areas | |
Detailed Description
class for the computation of jet areas.
This is the class user should use whenever you want to compute the jet area (passive and active). . It uses the SISCone algorithm to perform the jet analysis.
Member Function Documentation
| int siscone::Carea::compute_active_areas | ( | std::vector< Cmomentum > & | _particles, |
| double | _radius, | ||
| double | _f, | ||
| int | _n_pass_max = 0, |
||
| Esplit_merge_scale | _split_merge_scale = SM_pttilde, |
||
| bool | _hard_only = false |
||
| ) |
compute the jet active areas from a given particle set.
The parameters of this method are the ones which control the jet clustering alghorithn. Note that the pt_min is not allowed here soince the jet-area determination involves soft particles/jets and thus is used internally. See compute_areas for paramters definition.
- Returns:
- the number of jets (including pure-ghost ones if they are included)
Definition at line 291 of file area.cpp.
References twopi.
| int siscone::Carea::compute_areas | ( | std::vector< Cmomentum > & | _particles, |
| double | _radius, | ||
| double | _f, | ||
| int | _n_pass_max = 0, |
||
| Esplit_merge_scale | _split_merge_scale = SM_pttilde, |
||
| bool | _hard_only = false |
||
| ) |
compute the jet areas from a given particle set.
The parameters of this method are the ones which control the jet clustering alghorithn. Note that the pt_min is not allowed here soince the jet-area determination involves soft particles/jets and thus is used internally.
- Parameters:
-
_particles list of particles _radius cone radius _f shared energy threshold for splitting&merging _n_pass_max maximum number of passes (0=full search, the default) _split_merge_scale the scale choice for the split-merge procedure NOTE: SM_pt leads to IR unsafety for some events with momentum conservation. SM_Et is IR safe but not boost invariant and not implemented(!) SM_mt is IR safe for hadronic events, but not for decays of two back-to-back particles of identical mass SM_pttilde is always IR safe, and also boost invariant (default) _hard_only when this is set on, only hard jets are computed and not the purely ghosted jets (default: false)
- Returns:
- the number of jets (including pure-ghost ones if they are included)
Definition at line 125 of file area.cpp.
References twopi.
| int siscone::Carea::compute_passive_areas | ( | std::vector< Cmomentum > & | _particles, |
| double | _radius, | ||
| double | _f, | ||
| int | _n_pass_max = 0, |
||
| Esplit_merge_scale | _split_merge_scale = SM_pttilde |
||
| ) |
compute the jet passive areas from a given particle set.
The parameters of this method are the ones which control the jet clustering alghorithn. Note that the pt_min is not allowed here soince the jet-area determination involves soft particles/jets and thus is used internally. See compute_areas for paramters definition.
Definition at line 217 of file area.cpp.
References twopi.
The documentation for this class was generated from the following files: