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).

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, M.g., Amerio, S., Amidei, D., Anastassov, A., Anikeev, K., Annovi, A., Antos, J., Aoki, M., Apollinari, G., Arisawa, T., Artikov, A., Ashmanskas, W., Attal, A., Aurisano, A., Azfar, F., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 99:18(2007), pp. 182002-1-182002-7. [10.1103/physrevlett.99.182002]

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

DE CECCO, Sandro;DIONISI, Carlo;GIAGU, Stefano;MARGAROLI, Fabrizio;IORI, Maurizio;MESSINA, Andrea;SORRENTINO, Lucia;
2007

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).
2007
01 Pubblicazione su rivista::01a Articolo in rivista
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, M.g., Amerio, S., Amidei, D., Anastassov, A., Anikeev, K., Annovi, A., Antos, J., Aoki, M., Apollinari, G., Arisawa, T., Artikov, A., Ashmanskas, W., Attal, A., Aurisano, A., Azfar, F., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 99:18(2007), pp. 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/11573/362249
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