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Title
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Precise measurement of the top-quark mass in the lepton+jets topology at CDF II
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Author
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Institution/Organisation
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CDF Collaboration
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Abstract
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| We present a measurement of the mass of the top quark from proton-antiproton collisions recorded at the CDF experiment in Run II of the Fermilab Tevatron. We analyze events from the single lepton plus jets final state (tt̅ →W+bW-b̅ →lνbqq̅ ′b̅ ). The top-quark mass is extracted using a direct calculation of the probability density that each event corresponds to the tt̅ final state. The probability is a function of both the mass of the top quark and the energy scale of the calorimeter jets, which is constrained in situ by the hadronic W boson mass. Using 167 events observed in 955 pb-1 of integrated luminosity, we achieve the single most precise measurement of the top-quark mass, 170.8±2.2(stat.)±1.4(syst.) GeV/c2. |
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Language
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English
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Source (journal)
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Physical review letters. - New York, N.Y., 1958, currens
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Publication
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New York, N.Y.
:
American Physical Society
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2007
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ISSN
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0031-9007
[print]
1079-7114
[online]
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Volume/pages
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99
:18
(2007)
, p. 182001,1-182001,7
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ISI
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000250644000015
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Full text (Publisher's DOI)
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Full text (open access)
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