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Open Access item Top-Quark Mass Measurement Using Events with Missing Transverse Energy and Jets at CDF

Authors:Aaltonen, T.
Álvarez González, B.
Casal, Bruno
Cuevas, Javier
Gómez, G.
Palencia, Enrique
Rodrigo, Teresa
Ruiz Jimeno, Alberto
Scodellaro, Luca
Vila, Iván
Vilar, Rocío
Vizán, J.
Issue Date:Dec-2011
Publisher:American Physical Society
Citation:Physical Review Letters 107(23): 232002 (2011)
Abstract:We present a measurement of the top-quark mass using a sample of tt̅ events in 5.7  fb-1 of integrated luminosity from pp̅ collisions at the Fermilab Tevatron with √s=1.96  TeV and collected by the CDF II Detector. We select events having large missing transverse energy, and four, five, or six jets with at least one jet tagged as coming from a b quark, and reject events with identified charged leptons. This analysis considers events from the semileptonic tt̅ decay channel, including events that contain tau leptons. The measurement is based on a multidimensional template method. We fit the data to signal templates of varying top-quark masses and background templates, and measure a top-quark mass of Mtop=172.32±2.4(stat)±1.0(syst)  GeV/c2.
Description:8 páginas, 1 figura, 2 tablas.-- PACS numbers: 14.65.Ha, 12.15.Ff, 13.85.Qk.-- CDF Collaboration: et al.
Publisher version (URL):http://dx.doi.org/10.1103/PhysRevLett.107.232002
E-ISSNmetadata.dc.identifier.doi = DOI:1079-7114
Appears in Collections:(IFCA) Artículos

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