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Registro de acceso abierto Top-Quark Mass Measurement Using Events with Missing Transverse Energy and Jets at CDF

Autor :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.
Fecha de publicación :dic-2011
Editor:American Physical Society
Citación :Physical Review Letters 107(23): 232002 (2011)
Resumen: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.
Descripción :8 páginas, 1 figura, 2 tablas.-- PACS numbers: 14.65.Ha, 12.15.Ff, 13.85.Qk.-- CDF Collaboration: et al.
Versión del editor:http://dx.doi.org/10.1103/PhysRevLett.107.232002
URI :http://hdl.handle.net/10261/46875
ISSN:0031-9007
E-ISSN:1079-7114
DOI:10.1103/PhysRevLett.107.232002
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