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Precise measurement of the top-quark mass in the Lepton plus Jets topology at CDF II

Aaltonen, T; Abulencia, A; Adelman, J; Affolder, T; Akimoto, T; Albrow, MG; Amerio, S; ... Zucchelli, S; + view all (2007) Precise measurement of the top-quark mass in the Lepton plus Jets topology at CDF II. Physical Review Letters , 99 (18) , Article 182002. 10.1103/PhysRevLett.99.182002. Green open access

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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 (t (t) over bar -> W(+)bW(-)(b) over bar -> l nu bq (q) over bar (')(b) over bar). The top-quark mass is extracted using a direct calculation of the probability density that each event corresponds to the t (t) over bar 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/c(2).

Type: Article
Title: Precise measurement of the top-quark mass in the Lepton plus Jets topology at CDF II
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.99.182002
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.99.182002
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: LIKELIHOOD METHOD, MISSING MOMENTUM, PAIR PRODUCTION, EVENTS, RECONSTRUCTION, DECAY, BOSON
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/131678
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