Tau trigger scale factors

see more details here
https://indico.cern.ch/event/605406/contributions/2482759/attachments/1414963/2165912/tau_leg_triggers2016.pdf

for lepton + tau channels scale factors can be retrieved using SFreader class in getSF.py
- it computes SF from TGraphs stored in mu-tau/trigger_sf_mt.root or ele-tau/trigger_sf_et.root
- can optionally interpolate bewteen bins
for di-tau, we use an analytical function to model trigger efficiencies, see di-tau/README.md

TGraps and the function parameters can also be found here:

/afs/cern.ch/work/m/manzoni/public/rereco2016triggerSF/trigger_sf_mt.root
/afs/cern.ch/work/m/manzoni/public/rereco2016triggerSF/trigger_sf_et.root
/afs/cern.ch/work/m/manzoni/public/rereco2016triggerSF/fitresults_tt_moriond2017.json

rmanzoni/triggerSF

Tau trigger scale factors