|
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., 1958, currens
|
|
|
Publication
|
|
|
|
New York, N.Y.
:
American Physical Society
,
2006
|
|
|
ISSN
|
|
|
|
0031-9007
[print]
1079-7114
[online]
|
|
|
DOI
|
|
|
|
10.1103/PHYSREVLETT.96.152002
|
|
|
Volume/pages
|
|
|
|
96
:15
(2006)
, p. 1-7
|
|
|
Article Reference
|
|
|
|
152002
|
|
|
ISI
|
|
|
|
000236969700019
|
|
|
Medium
|
|
|
|
E-only publicatie
|
|
|
Full text (Publisher's DOI)
|
|
|
|
|
|
|
Full text (open access)
|
|
|
|
|
|