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(+)b W(-)(b) over bar -> l nu b q (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).

T., A., A., A., J., A., T., A., T., A., M. G., A., et al. (2007). Precise measurement of the top-quark mass in the Lepton + Jets topology at CDF II. PHYSICAL REVIEW LETTERS, 99(18), 182002-1-182002-7 [10.1103/PhysRevLett.99.182002].

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

CIOCCI, MARIA AGNESE;
2007-01-01

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(+)b W(-)(b) over bar -> l nu b q (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).
2007
T., A., A., A., J., A., T., A., T., A., M. G., A., et al. (2007). Precise measurement of the top-quark mass in the Lepton + Jets topology at CDF II. PHYSICAL REVIEW LETTERS, 99(18), 182002-1-182002-7 [10.1103/PhysRevLett.99.182002].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/36193
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