Publication
Title
Measurement of the top quark mass at CDF using the "neutrino weighting" template method on a lepton plus isolated track sample
Author
Institution/Organisation
CDF Collaboration
Abstract
We present a measurement of the top quark mass with tt̅ dilepton events produced in pp̅ collisions at the Fermilab Tevatron (√s=1.96  TeV) and collected by the CDF II detector. A sample of 328 events with a charged electron or muon and an isolated track, corresponding to an integrated luminosity of 2.9   fb-1, are selected as tt̅ candidates. To account for the unconstrained event kinematics, we scan over the phase space of the azimuthal angles (ϕν1,ϕν2) of neutrinos and reconstruct the top quark mass for each ϕν1, ϕν2 pair by minimizing a χ2 function in the tt̅ dilepton hypothesis. We assign χ2-dependent weights to the solutions in order to build a preferred mass for each event. Preferred mass distributions (templates) are built from simulated tt̅ and background events, and parametrized in order to provide continuous probability density functions. A likelihood fit to the mass distribution in data as a weighted sum of signal and background probability density functions gives a top quark mass of 165.5-3.3+3.4(stat)±3.1(syst)  GeV/c2.
Language
English
Source (journal)
Physical review : D : particles and fields. - Lancaster, Pa, 1970 - 2003
Publication
Lancaster, Pa : 2009
ISSN
0556-2821
Volume/pages
79:7(2009), p. 072005,1-072005,18
ISI
000266408300008
Full text (Publishers DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 15.03.2010
Last edited 21.05.2017
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