Title
Measurement of the top quark mass at CDF using the "neutrino <tex>$\phi$</tex> weighting" template method on a lepton plus isolated track sampleMeasurement of the top quark mass at CDF using the "neutrino <tex>$\phi$</tex> weighting" template method on a lepton plus isolated track sample
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Elementary Particle Physics
Publication type
article
Publication
Lancaster, Pa,
Subject
Physics
Source (journal)
Physical review : D : particles and fields. - Lancaster, Pa, 1970 - 2003
Volume/pages
79(2009):7, p. 072005,1-072005,18
ISSN
0556-2821
ISI
000266408300008
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
We present a measurement of the top quark mass with tt&#773; dilepton events produced in pp&#773; 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 tt&#773; candidates. To account for the unconstrained event kinematics, we scan over the phase space of the azimuthal angles (&#981;ν1,&#981;ν2) of neutrinos and reconstruct the top quark mass for each &#981;ν1, &#981;ν2 pair by minimizing a χ2 function in the tt&#773; 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 tt&#773; 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.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/637794/31c47c97.pdf
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