1. CMS Masterclass 2012 Ken Cecire University of Notre Dame/QuarkNet kcecire@nd.edu

2. IPPOG Masterclass Pre-Meeting 19 April 2012 W/Z Investigation 1900 Events: W and Z Background “Mystery” events 2-12 GeV Students sort events by: Lepton flavor (e or  ). Candidacy (W or Z). Charge (W+ or W-). Find: W+/W-. e/  Z mass. Unexpected particles (J  and  ) 

3. IPPOG Masterclass Pre-Meeting 19 April 2012 iSpy-Online

4. IPPOG Masterclass Pre-Meeting 19 April 2012 W/Z Investigation Distinguish e from  Distinguish W from Z. Recognize missing Et. Distinguish W+ vs. W- Place hard-to- interpret events in “zoo.” Record and combine data.

5. IPPOG Masterclass Pre-Meeting 19 April 2012

6. IPPOG Masterclass Pre-Meeting 19 April 2012 Record Measurements

7. IPPOG Masterclass Pre-Meeting 19 April 2012 Combine Measurements

8. IPPOG Masterclass Pre-Meeting 19 April 2012 Combination of Results

9. IPPOG Masterclass Pre-Meeting 19 April 2012 Website/Languages Now in 8 languages, heading toward 9!

10. IPPOG Masterclass Pre-Meeting 19 April 2012 Where We Stand CMS Masterclass Produced by QuarkNet with Much Help Software Website and Library Measurements Assistance from mentors and teachers Collaboration with CMS, FNAL, CERN... Translators Data and guidance from CMS Adoption 2012 46 masterclass institutes in 18 countries Summer 2012 in Beijing, Melbourne, Sydney, and...

11. IPPOG Masterclass Pre-Meeting 19 April 2012 Where We Stand CMS Masterclass Success Enthusiasm for W/Z measurement Combination of results improved More work to do Some mentors benefited from direct assistance—it was fun. iSpy-online continues to be popular. More developments on the way?