Measurement of the top quark mass at CDF using the "neutrino phi weighting" template method on a lepton plus isolated track sample
Author(s)
Xie, Si; Knuteson, Bruce O.; Henderson, C.; Hahn, Kristian Allan; Gomez-Ceballos, Guillelmo; Choudalakis, Georgios; Paus, Christoph M. E.; Makhoul, Khaldoun; Goncharov, Maxim; Bauer, Gerry P; ... Show more Show less
DownloadAaltonen-2009-Measurement of the t.pdf (1.392Mb)
PUBLISHER_POLICY
Publisher Policy
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Alternative title
Measurement of the top quark mass at CDF using the “neutrino ϕ weighting” template method on a lepton plus isolated track sample
Terms of use
Metadata
Show full item recordAbstract
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[superscript -1], are selected as tt̅ candidates. To account for the unconstrained event kinematics, we scan over the phase space of the azimuthal angles (ϕ[subcript ν1],ϕ[subcript ν2]) of neutrinos and reconstruct the top quark mass for each ϕ[subcript ν1], ϕ[subcript ν2] pair by minimizing a χ[superscript 2] function in the tt̅ dilepton hypothesis. We assign χ[superscript 2]-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[subcript -3.3][superscript +3.4](stat)±3.1(syst) GeV/c[superscript 2].
Date issued
2009-04Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Physical Review D
Publisher
American Physical Society
Citation
CDF Collaboration et al. “Measurement of the top quark mass at CDF using the "neutrino phi weighting" template method on a lepton plus isolated track sample.” Physical Review D 79.7 (2009): 072005. © 2009 The American Physical Society
Version: Final published version