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CMS Masterclass 2013 Results Presentation - Lepton ID, Charge Determination, ZZ Decays, Higgs Candidates

Explore the results from the CMS Masterclass 2013 held in Padova, Italy, covering topics such as lepton identification, charge determination, ZZ decays, and Higgs boson candidates. Learn about conservation laws, mass plots, and ratios derived from particle data. Analyze data from the provided xls files and delve into key questions regarding particle identification, charge measurement, and the underlying physics principles. Access additional resources, such as mass plots from Lione and Torino, to enhance your understanding of the presented results.

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CMS Masterclass 2013 Results Presentation - Lepton ID, Charge Determination, ZZ Decays, Higgs Candidates

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  1. Presentation of results Padova (ITA) Institute March 20th 2013 CMS exercise Masterclass 2013

  2. Wedid… We have two columns in xls file: electron and muon Lepton ID with detectors Charge determination GOAL is particle ID through leptonic decays Questions: Which detector did you look? How did you measure the particle charge? Masterclass 2013

  3. Wedid… We have three columns in xls file: +, -, not known Question: Which quantities are conserved? Masterclass 2013

  4. Wedid… We have three columns in xls file: Z, ZZ, mass Question: Describe the ZZ decays with only charged leptons. Finally, we have the column called zoo: … … Question: What is it? Masterclass 2013

  5. Padova results: numbers Masterclass 2013

  6. Padova results: ratios Ratio e/μ Ratio W+/W- Expected value [ratio e/μ] = 1.0 Expected value [ratio W+/W-] = 1.4 Measure [ratio e/μ] = (1.05 ± 0.06) Measure [ratio W+/W-] = (1.31 ± 0.09) Question: Why the ratio e/μ is 1.0? Question: Why is W+ more frequent than W-? Masterclass 2013

  7. Lione results: mass plot Massplot Lione (March 18 th) Masterclass 2013

  8. Torino results: mass plot Massplot Torino (March 18 th) Masterclass 2013

  9. Padova results: Z mass plot Massplot Padova (March 20 th) From Particle Data Group Mass (Z) = (91.1876 ± 0.0021) GeV MZZ ≈ 126 GeV Higgs candidates Masterclass 2013

  10. Padova results: Z mass plot Massplot Padova (March 20 th) MZZ ≈ 126 GeV Higgs candidates Masterclass 2013

  11. Padova results: Higgscandidates Your Higgs candidate CMS official Higgs candidate Masterclass 2013

  12. Masterclasslinks Pagina masterclass http://www.pd.infn.it/masterclasses/2013/ Risultati globali http://www.editgrid.com/qn-nd/qnmasterclasses/CMSWZ2013cern20003 Scaricare il DVD (MC2013 per accedere) http://www.physicsmasterclasses.org/downloads/DVD2013/dvd.html Masterclass 2013

  13. Videoconference Padova (Italia) Zagabria (Croazia) Budapest (Ungheria) Lione (Francia) Dublino (Irlanda) • Possiblequestions to be asked • Life @ CERN • Motivation to do physics • Higgsbosons • Othersearches + QUIZ Masterclass 2013

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