Measurement of the top-quark mass in the tt¯ dilepton channel using the full CDF Run II data set

Aaltonen, T.

doi:10.1103/PhysRevD.92.032003

Title: Measurement of the top-quark mass in the tt¯ dilepton channel using the full CDF Run II data set

Journal Article · Thu Aug 06 00:00:00 EDT 2015 · Physical Review. D, Particles, Fields, Gravitation and Cosmology

DOI:https://doi.org/10.1103/PhysRevD.92.032003· OSTI ID:1212716

Aaltonen, T. ^[1]

Univ. of Helsinki, Helsinki (Finland). et al.

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^–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 tt¯ dilepton signal and background. We measure a value for the top-quark mass of 171.5±1.9 (stat)±2.5 (syst) GeV/c².

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Organization:: CDF

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1212716

Alternate ID(s):: OSTI ID: 1209184

Report Number(s):: FERMILAB-PUB-15-190-E; arXiv:1505.00500; PRVDAQ; 1366021

Journal Information:: Physical Review. D, Particles, Fields, Gravitation and Cosmology, Vol. 92, Issue 3; ISSN 1550-7998

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited By (2)

Measurement of the forward–backward asymmetry of top-quark and antiquark pairs using the full CDF Run II data set Aaltonen, T.; Amerio, S.; Amidei, D. Physical Review D, Vol. 93, Issue 11 https://doi.org/10.1103/physrevd.93.112005	journal	June 2016
Measurement of the forward–backward asymmetry of top-quark and antiquark pairs using the full CDF Run II data set Collaboration, Cdf; Al, Et; Canelli, F. American Physical Society https://doi.org/10.5167/uzh-129916	text	January 2016

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