Table of Content

• Trigger Used
  • Run-2016
  • Run-2017
  • Run-2018
• Check Trigger Prescale and filter
• How to calculate trigger efficiency
• Single Electron Trigger Scale Factor
• Single Muon Trigger Scale Factor

Trigger Used

Run-2016

Run-2017

• For electrons: HLT_Ele35_WPTight_Gsf_v
• For muons: HLT_IsoMu27_v

Both of these trigger are there throughout the year and they are lowest pre-scaled triggers.

Reference: https://cmsweb.cern.ch/confdb/

Run-2018

Check Trigger Prescale and filter

1. Go to: https://cmsweb.cern.ch/confdb/
2. click on Explore Database
3. click on cdaq
4. click on Physics
5. click on Run2016 or whatever run you would like to see
6. click on special run or on 25ns15e33 (e.g.)
7. click on the latest version
8. Then click on the detailed view
9. Search your trigger from the list
10. Select the last filter of the sequence

How to calculate trigger efficiency

Single Electron Trigger Scale Factor

Single Muon Trigger Scale Factor