Repository "Trigger_SF" is used for trigger SF study,
- run trigger.py, to obtain all the needed histograms
- run plot.py, to obtained the SF
- plot_byhand.py, to obtain the SF rootfile
Repository "DY_region" is sued for DY region plot, run DY_ee.py/DY_emu.py/DY_mumu.py
Repository "TTC_region" is used for TTC region plot, run ttc_ee.py/ttc_emu.py/ttc_mumu.py