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Title

Measurement of the top-quark mass in all-hadronic decays in p(p)over-bar collisions at CDF II

AuthorsAaltonen, T.; Cuevas, Javier ; Gómez, G. ; Gómez-Ceballos, Guillelmo; Menzemer, Stephanie; Palencia, Enrique ; Rodrigo, Teresa ; Ruiz Jimeno, Alberto ; Scodellaro, Luca ; Vila, Iván ; Vilar, Rocío
Keywords[PACS] Top quarks
[PACS] Quark and lepton masses and mixing in electroweak interactions
Issue Date3-Apr-2007
PublisherAmerican Physical Society
CitationPhysical Review Letters 98: 142001 (2007)
AbstractWe present a measurement of the top-quark mass M-top in the all-hadronic decay channel t(t)over bar -> W(+)bW(-)(b)over bar -> q(1)(q)over bar(2)bq(3)(q)over bar(4)(b)over bar. The analysis is performed using 310 pb^(-1) of root(s) = 1.96 TeV p(p)over bar collisions collected with the CDF II detector using a multijet trigger. The mass measurement is based on an event-by-event likelihood which depends on both the sample purity and the value of the top-quark mass, using 90 possible jet-to-parton assignments in the six-jet final state. The joint likelihood of 290 selected events yields a value of M-top = 177.1 ± 4.9(stat) ± 4.7(syst) GeV/c^(2).
Description7 pages, 2 figures.-- PACS nrs.: 14.65.Ha, 12.15.Ff.-- ISI Article Id: 000245512100018.-- ArXiv pre-print available at: http://arxiv.org/pdf/hep-ex/0612026. CDF Collaboration: et al.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevLett.98.142001
URIhttp://hdl.handle.net/10261/8517
DOI10.1103/PhysRevLett.98.142001
ISSN0031-9007
Appears in Collections:(IFCA) Artículos
(IFIC) Artículos
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