# Measurement of the top-quark mass in the $t\bar{t}$ dilepton channel using the full CDF Run II data set

Aaltonen, T A; Amerio, S; Amidei, D E; et al; Canelli, F; Kilminster, B; Galloni, G; CDF Collaboration (2015). Measurement of the top-quark mass in the $t\bar{t}$ dilepton channel using the full CDF Run II data set. Physical Review D (Particles, Fields, Gravitation and Cosmology), 92:032003.

## 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 $\sqrt{s} = 1.96$ TeV, corresponding to an integrated luminosity of $9.1 fb^{-1}$. 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 ${t\bar{t}}$ dilepton signal and background. We measure a value for the top-quark mass of $171.5\pm 1.9~{\rm(stat)}\pm 2.5~{\rm (syst)}$ GeV/$c^2$.

## 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 $\sqrt{s} = 1.96$ TeV, corresponding to an integrated luminosity of $9.1 fb^{-1}$. 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 ${t\bar{t}}$ dilepton signal and background. We measure a value for the top-quark mass of $171.5\pm 1.9~{\rm(stat)}\pm 2.5~{\rm (syst)}$ GeV/$c^2$.

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Item Type: Journal Article, refereed, original work 07 Faculty of Science > Physics Institute 530 Physics English 3 May 2015 12 Feb 2016 16:01 05 Apr 2016 20:03 American Physical Society 1550-2368 https://doi.org/10.1103/PhysRevD.92.032003 arXiv:1505.00500v2

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