期刊
PHYSICAL REVIEW D
卷 84, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.84.071105
关键词
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资金
- U.S. Department of Energy
- National Science Foundation
- Italian Istituto Nazionale di Fisica Nucleare
- Ministry of Education, Culture, Sports, Science and Technology of Japan
- 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 und Forschung, Germany
- Korean World Class University
- National Research Foundation of Korea
- Science and Technology Facilities Council
- Royal Society, UK
- Institut National de Physique Nucleaire et Physique des Particules/CNRS
- Russian Foundation for Basic Research
- Ministerio de Ciencia e Innovacion
- Programa Consolider-Ingenio, Spain
- Slovak RD Agency
- Academy of Finland
- Australian Research Council (ARC)
- ICREA Funding Source: Custom
- Grants-in-Aid for Scientific Research [18071002] Funding Source: KAKEN
- STFC [PP/E003699/1, ST/H001026/1, PP/E003699/2, ST/H001069/1, ST/H001026/2] Funding Source: UKRI
- Science and Technology Facilities Council [PP/E003699/2, ST/H001069/1, PP/E003699/1, ST/H001026/1, ST/H001026/2] Funding Source: researchfish
A measurement of the top-quark mass is presented using Tevatron data from proton-antiproton collisions at center-of-mass energy root s = 1.96 TeV collected with the CDF II detector. Events are selected from a sample of candidates for production of t (t) over bar pairs that decay into the lepton + jets channel. The top-quark mass is measured with an unbinned maximum likelihood method where the event probability density functions are calculated using signal and background matrix elements, as well as a set of parametrized jet-to-parton transfer functions. The likelihood function is maximized with respect to the top-quark mass, the signal fraction in the sample, and a correction to the jet energy scale (JES) calibration of the calorimeter jets. The simultaneous measurement of the JES correction (Delta(JES)) amounts to an additional in situ jet energy calibration based on the known mass of the hadronically decaying W boson. Using the data sample of 578 lepton + jets candidate events, corresponding to 3.2 fb(-1) of integrated luminosity, the top-quark mass is measured to be m(t) = 172.4 +/- 1.4(stat + Delta(JES)) +/- 1.3(syst) GeV/c(2).
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