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

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URI: http://hdl.handle.net/10902/2149
ISSN: 0031-9007
ISSN: 1079-7114
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Autoría
Aaltonen, Timo Antero; Álvarez González, Bárbara; Casal Laraña, Bruno; Cuevas Maestro, Francisco Javier; Gómez Gramuglio, GervasioAutoridad Unican; Palencia Cortezón, José Enrique; Rodrigo Anoro, TeresaAutoridad Unican; Ruiz Jimeno, AlbertoAutoridad Unican; Scodellaro, LucaAutoridad Unican; Vila Álvarez, Iván Autoridad Unican; Vilar Cortabitarte, RocíoAutoridad Unican; Vizán García, Jesús ManuelAutoridad Unican
Fecha
2011-11-30
Derechos
© 2011 American Physical Society
Publicado en
Physical Review Letters, 2011, 107(23), 232002
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American Physical Society
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Resumen/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.
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