Precise measurement of the top-quark mass in the Lepton plus Jets topology at CDF II RID C-3493-2011 RID G-1087-2011 RID E-4473-2011

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doi:10.1103/PhysRevLett.99.182002

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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 (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).

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11384/4977

Titolo:	Precise measurement of the top-quark mass in the Lepton plus Jets topology at CDF II RID C-3493-2011 RID G-1087-2011 RID E-4473-2011
Autori interni:	MORELLO, MICHAEL JOSEPH
Data di pubblicazione:	2007
Rivista:	PHYSICAL REVIEW LETTERS
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).
Handle:	http://hdl.handle.net/11384/4977
Appare nelle tipologie:	1.1 Articolo in rivista

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