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Analyzing Top/Antitop Events in D0 Detector: Methods and Measurements

This document details the analysis process for top/antitop events observed in the D0 detector at the Tevatron. Specifically, it focuses on Event 14022 from run 92704. Key analysis steps include identifying jets and muons, measuring their angles from the x-axis, drawing momentum vectors, and calculating neutrino energy to ensure total transverse momentum (pT) equals zero. The final step involves averaging the energies of jets, muons, and neutrinos to estimate the top quark mass. A precise methodology enhances our understanding of particle physics. Good luck with the analysis!

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Analyzing Top/Antitop Events in D0 Detector: Methods and Measurements

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  1. Inside the Tevatron Main Ring

  2. Detection of a top/antitop event

  3. Top/antitop event in the D0 detectorRun 92704, Event 14022

  4. Top/antitop event in the D0 detectorRun 92704, Event 14022

  5. Top/antitop event in the D0 detectorRun 92704, Event 14022

  6. Top/antitop event in the D0 detectorRun 92704, Event 14022

  7. Steps in Analysis of Events • Identify jets and muons and write energies in table. • Measure and record angles of jets and muons counterclockwise from +x axis. • Draw vectors in rectangular space or on graph paper using head-to-tail method. Represent momentum of 10 GeV/c as 1.0 cm arrow. • Neutrino energy in GeV is the length of the arrow you must draw in order to make the total pT = 0. • Add all of the jet, muon, and neutrino energies and divide the sum by two to get the top quark mass.

  8. GOOD LUCK!!

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