Journal
PHYSICAL REVIEW LETTERS
Volume 111, Issue 20, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.111.202001
Keywords
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Categories
Funding
- U. S. Department of Energy and National Science Foundation
- Italian Istituto Nazionale di Fisica Nucleare
- Natural Sciences and Engineering Research Council of Canada
- National Science Council of the Republic of China
- Swiss National Science Foundation
- A. P. Sloan Foundation
- Bundesministerium fur Bildung and Forschung, Germany
- Korean World Class University Program, the National Research Foundation of Korea
- Science and Technology Facilities Council, UK
- Royal Society, UK
- Russian Foundation for Basic Research
- Ministerio de Ciencia e Innovacion, and Programa Consolider-Ingenio, Spain
- Slovak RD Agency
- Academy of Finland
- Australian Research Council (ARC)
- EU community Marie Curie Fellowship [302103]
- Ministry of Education, Culture, Sports, Science and Technology of Japan
- Science and Technology Facilities Council [ST/L00335X/1, ST/J005568/1, ST/K000195/1, ST/K000748/1, PP/E003699/2, ST/K00140X/1, ST/H001085/2, ST/K00137X/1, PP/E003699/1, ST/H001069/2, ST/H001085/1, ST/M001474/1] Funding Source: researchfish
- Division Of Physics
- Direct For Mathematical & Physical Scien [1066014] Funding Source: National Science Foundation
- ICREA Funding Source: Custom
- STFC [ST/L00335X/1, ST/H001069/2, ST/K00137X/1, ST/K00140X/1, ST/H001085/2, ST/K000748/1, ST/K000195/1, ST/J005568/1, PP/E003699/2, ST/H001085/1, PP/E003699/1] Funding Source: UKRI
- National Research Foundation of Korea [35B-2011-1-C00007] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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We present a measurement of the total decay width of the top quark using events with top-antitop quark pair candidates reconstructed in the final state with one charged lepton and four or more hadronic jets. We use the full Tevatron run II data set of root s = 1.96 TeV proton-antiproton collisions recorded by the CDF II detector. The top quark mass and the mass of the hadronically decaying W boson are reconstructed for each event and compared with distributions derived from simulated signal and background samples to extract the top quark width (Gamma(top)) and the energy scale of the calorimeter jets with in situ calibration. For a top quark mass M-top = 172.5 GeV/c(2), we find 1.10 < Gamma(top) < 4.05 GeV at 68% confidence level, which is in agreement with the standard model expectation of 1.3 GeV and is the most precise direct measurement of the top quark width to date.
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