RooUtil is a utility class to help analyze EventNtuple in ROOT-based analysis frameworks.
It is currently under development and the available branches are listed below
There are various classes that combine together branches at different dimenions
| Class | Single Objects | Vectors | Vector-of-Vectors |
|---|---|---|---|
| Event | evtinfo, evtinfomc |
trk |
trksegs |
| Track | trk |
trksegs |
none |
| TrackSegment | trkseg |
none | none |
The currently supported branches are:
- evtinfo, evtinfomc
- trk
- trksegs
Here are the common cut functions defined in EventNtuple/utils/rooutil/inc/common_cuts.hh with explanations:
| function | cuts on | result |
|---|---|---|
is_e_minus |
tracks | true if e-minus hypothesis |
is_e_plus |
tracks | true if e-plus hypothesis |
is_mu_minus |
tracks | true if mu-minus hypothesis |
is_mu_plus |
tracks | true if mu-plus hypothesis |
tracker_entrance |
track segments | true if track segment is at tracker entrance |
tracker_middle |
track segments | true if track segment is at tracker middle |
tracker_exit |
track segments | true if track segment is at tracker exit |
There are two ways to combine cut functions:
- Write a new one yourself e.g:
bool my_cut(onst Track& track) {
return good_track(track) && is_e_minus(track);
}
...
int n_e_minus_good_tracks = event.CountTracks(my_cut);
- or, be combine them in a lambda function (similar to python):
int n_e_minus_good_tracks = event.CountTracks([](const Track& track){ return is_e_minus(track) && good_track(track); });