Publication
Title
Top-quark mass measurement from dilepton events at CDF II
Author
Institution/Organisation
CDF Collaboration
Abstract
We report a measurement of the top-quark mass using events collected by the CDF II detector from pp̅ collisions at √s=1.96  TeV at the Fermilab Tevatron. We calculate a likelihood function for the top-quark mass in events that are consistent with tt̅ →b̅ ℓ-ν̅ ℓbℓ′+νℓ′ decays. The likelihood is formed as the convolution of the leading-order matrix element and detector resolution functions. The joint likelihood is the product of likelihoods for each of 33 events collected in 340  pb-1 of integrated luminosity, yielding a top-quark mass Mt=165.2±6.1(stat)±3.4(syst)  GeV/c2. This first application of a matrix-element technique to tt̅ →bℓ+νℓb̅ ℓ′-ν̅ ℓ′ decays gives the most precise single measurement of Mt in dilepton events. Combined with other CDF run II measurements using dilepton events, we measure Mt=167.9±5.2(stat)±3.7(syst)  GeV/c2.
Language
English
Source (journal)
Physical review letters. - New York, N.Y.
Publication
New York, N.Y. : 2006
ISSN
0031-9007
Volume/pages
96:15(2006), p. 152002,1-152002,7
ISI
000236969700019
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 02.04.2010
Last edited 28.09.2017
To cite this reference