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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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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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Author: Aaltonen, T.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J. A.; Arisawa, T.; Artikov, A.; Asaadi, J.; Ashmanskas, W.; Auerbach, B.; Aurisano, A.; Azfar, F.; Badgett, W.; Bae, T.; Barbaro-Galtieri, A.; Barnes, V. E.; Barnett, B. A.; Barria, P.; Bartos, P.; Bauce, M.; Bedeschi, F.; Behari, S.; Bellettini, G.; Bellinger, J.; Benjamin, D.; Beretvas, A.; Bhatti, A. ... [more in full view]
Department: Massachusetts Institute of Technology. Laboratory for Nuclear Science; Massachusetts Institute of Technology. Department of Physics
Publisher: American Physical Society
Date Issued: 2015-08
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].
URI: http://hdl.handle.net/1721.1/98044
ISSN: 1550-7998
1550-2368
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
Terms of Use: 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.
Published As: http://dx.doi.org/10.1103/PhysRevD.92.032003
Journal: Physical Review D

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