Measurement of the top-quark mass in the t[bar over t] dilepton channel using the full CDF Run II data set
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PhysRevD.92.032003.pdf
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Author(s)
Aaltonen, T.
Amerio, S.
Amidei, D.
Anastassov, A.
Annovi, A.
Antos, J.
Apollinari, G.
Appel, J. A.
Arisawa, T.
Artikov, A.
Date Issued
August 2015
Journal
Physical Review D
Publisher
American Physical Society
Citation
Aaltonen, T., et al. "Measurement of the top-quark mass in the t[bar over t] dilepton channel using the full CDF Run II data set." Phys. Rev. D 92, 032003 (August 2015). © 2015 American Physical Society
Version
Final published version
Abstract
We present a measurement of the top-quark mass in events containing two leptons (electrons or muons) with a large transverse momentum, two or more energetic jets, and a transverse-momentum imbalance. We use the full proton-antiproton collision data set collected by the CDF experiment during the Fermilab Tevatron Run II at center-of-mass energy √s = 1.96 TeV, corresponding to an integrated luminosity of 9.1 fb[superscript -1]. A special observable is exploited for an optimal reduction of the dominant systematic uncertainty, associated with the knowledge of the absolute energy of the hadronic jets. The distribution of this observable in the selected events is compared to simulated distributions of t[bar over t] dilepton signal and background. We measure a value for the top-quark mass of 171.5 ± 1.9 (stat) ±2.5 (syst) GeV/c[superscript 2].
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.92.032003
