What is this lesson about?
Welcome. In this lesson you will:
- Dig deeper into CMS physics objects!
- Learn how corrections for simulation are derived.
- Learn several common corrections applied in CMS analyses.
- Practice applying corrections and evaluating their uncertainties.
Prerequisites
- Follow the POET setup from the basic object lesson.
- Check out the muon correction package using the Setup page below
Helpline
Remember that we are always available to help. Our Mattermost channel is open.
| Setup | Download files required for the lesson | |
| 00:00 | 1. Prep: Intro to corrections and uncertainties |
How can simulation be used reliably in physics analyses?
How are algorithm efficiencies measured in data and simulation? How can efficiency differences be corrected? How do analysts handle uncertainties on corrections? |
| 00:20 | 2. Demo: Muon corrections | How to correct biased muon momentum? |
| 00:32 | 3. Demo: Heavy flavor tagging | How are b hadrons identified in CMS |
| 00:44 | 4. Demo: Jet corrections | How are data/simulation differences dealt with for jet energy? |
| 00:56 | 5. 15 minute break | Which type of coffee will you drink on your break? |
| 01:11 | 6. Advanced objects hands-on |
How can I visualize the effect of the muon corrections?
How do I access other b tagging discriminators? How do I apply the b tagging scale factors and visualize the uncertainty? |
| 01:51 | 7. Offline: Advanced object challenge |
How do uncorrected and corrected jet momenta compare?
How large is the JEC uncertainty in different regions? How large is the JER uncertainty in different regions? |
| 02:21 | 8. Come back tomorrow morning! | Break |
| 02:21 | 9. Solutions and questions |
How do uncorrected and corrected jet momenta compare?
How large is the JEC uncertainty in different regions? How large is the JER uncertainty in different regions? |
| 03:01 | Finish |
The actual schedule may vary slightly depending on the topics and exercises chosen by the instructor.