English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/8537
Title: Precise measurement of the top-quark mass in the Lepton plus Jets topology at CDF II
Authors: Aaltonen, T.; Casal, Bruno; Cuevas, Javier; Gómez, G.; Rodrigo, Teresa; Ruiz Jimeno, Alberto; Menzemer, Stephanie; Palencia, Enrique; Scodellaro, Luca; Vila, Iván; Vilar, Rocío
Keywords: Likelihood Method
Missing Momentum
Pair Production
[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
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.99.182002
Appears in Collections:(IFCA) Artículos
(IFIC) Artículos
Files in This Item:
File Description SizeFormat 
Precise_measurement.pdf228,79 kBAdobe PDFThumbnail
Show full item record

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.