Title
Precise measurement of the top-quark mass in the lepton+jets topology at CDF II Precise measurement of the top-quark mass in the lepton+jets topology at CDF II
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
New York, N.Y. ,
Subject
Physics
Source (journal)
Physical review letters. - New York, N.Y.
Volume/pages
99(2007) :18 , p. 182001,1-182001,7
ISSN
0031-9007
ISI
000250644000015
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
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.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/bf4e13/af59aa37.pdf
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