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| Title: | Precise measurement of the top-quark mass in the Lepton plus Jets topology at CDF II |
Authors: | Aaltonen, T.; Casal, Bruno CSIC; Cuevas, Javier CSIC ORCID; Gómez, G. CSIC ORCID ; Rodrigo, Teresa CSIC ORCID ; Ruiz Jimeno, Alberto ; Menzemer, Stephanie; Palencia, Enrique CSIC ORCID; Scodellaro, Luca CSIC ORCID ; Vila, Iván CSIC ORCID; Vilar, Rocío CSIC ORCID | Keywords: | Likelihood Method Missing Momentum Pair Production Events Reconstruction Decay Boson [PACS] Top quarks [PACS] Quark and lepton masses and mixing in electroweak interactions [PACS] Hadron-induced inclusive production with identified leptons, photons, or other nonhadronic particles (energy > 10 GeV) |
Issue Date: | 31-Oct-2007 | Publisher: | American Physical Society | Citation: | Physical Review Letters 99: 182002 (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 -> lvbq(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. | Description: | 7 pages, 3 figures.-- PACS nrs.: 14.65.Ha, 12.15.Ff, 13.85.Qk.-- ISI Article Identifier :000250644000015.-- ArXiv pre-print available: http://arxiv.org/pdf/hep-ex/0703045.-- CDF Collaboration: et al. | Publisher version (URL): | http://dx.doi.org/10.1103/PhysRevLett.99.182002 | URI: | http://hdl.handle.net/10261/8537 | DOI: | 10.1103/PhysRevLett.99.182002 | ISSN: | 0031-9007 |
| Appears in Collections: | (IFCA) Artículos (IFIC) Artículos |
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