Title
Top quark mass measurement from dilepton events at CDF II with the matrix-element method Top quark mass measurement from dilepton events at CDF II with the matrix-element method
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Lancaster, Pa ,
Subject
Physics
Source (journal)
Physical review : D : particles and fields. - Lancaster, Pa, 1970 - 2003
Volume/pages
74(2006) :3 , p. 032009,1-032009,20
ISSN
0556-2821
ISI
000240239300020
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
We describe a measurement of the top quark mass using events with two charged leptons collected by the CDF II detector from pp̅ collisions with √s=1.96   TeV at the Fermilab Tevatron. The likelihood in top quark mass is calculated for each event by convoluting the leading order matrix element describing qq̅ →tt̅ →bℓνℓb̅ ℓ′νℓ′ with detector resolution functions. The presence of background events in the data sample is modeled using similar calculations involving the matrix elements for major background processes. In a data sample with integrated luminosity of 340  pb-1, we observe 33 candidate events and measure Mtop=165.2±6.1(stat.)±3.4(syst.)  GeV/c2. This measurement represents the first application of this method to events with two charged leptons and is the most precise single measurement of the top quark mass in this channel.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/80ee4e/3b2f6e3c.pdf
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