Changes between Version 15 and Version 16 of WorkBook/Tutorials/Student
- Timestamp:
- Sep 9, 2019, 2:24:56 PM (5 years ago)
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WorkBook/Tutorials/Student
v15 v16 77 77 - The provided data corresponds to LHC events that contains at least two isolated leptons (lepton=electron/muon) with pT > 15. Prove it! 78 78 79 - The data contains the equivalent of an integrated luminosity of 60 pb-1. I presents an excess corresponding to a new physical state. Find the observable that makes this excess explicit.79 - The data contains the equivalent of an integrated luminosity of 60 pb-1. It contains an excess corresponding to a new physical state. Find the observable that makes this excess explicit. 80 80 81 - What is the new particle's mass? 81 82 83 - What does it decay into? 82 84 85 - For each decay channel define an event selection (the signal region) that maximises the significance of observation of this new state. 86 87 - For each decay channel, express the cross section times branching ratio as a function of the number of observed events (Nobs) and the number of background events (Nb) in the signal region, the integrated luminosity (L) and the event selection efficiency. 88 89 - How would you measure the background yield (Nb) from this data sample? 90 91 - How would you measure the signal efficiency?
