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Title: Precise measurement of the top quark mass in dilepton decays using optimized neutrino weighting

Abstract

We measure the top quark mass in dilepton final states of tt¯ events in pp¯ collisions at √s= 1.96 TeV, using data corresponding to an integrated luminosity of 9.7 fb-1 at the Fermilab Tevatron Collider. The analysis features a comprehensive optimization of the neutrino weighting method to minimize the statistical uncertainties. Furthermore, we improve the calibration of jet energies using the calibration determined in tt¯ → lepton + jets events, which reduces the otherwise limiting systematic uncertainty from the jet energy scale. As a result, the measured top quark mass is mt = 173.32±1.36(stat)±0.85(syst) GeV.

Authors:
 [1]
  1. LAFEX, Rio de Janeiro (Brazil); Charles Univ., Prague (Czech Republic). et al.
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
D0 Collaboration
OSTI Identifier:
1221343
Report Number(s):
FERMILAB-PUB-15-338-E
Journal ID: ISSN 0370-2693; arXiv eprint number arXiv:1508.03322; TRN: US1601073
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Accepted Manuscript
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 752; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Abazov, Victor Mukhamedovich. Precise measurement of the top quark mass in dilepton decays using optimized neutrino weighting. United States: N. p., 2015. Web. doi:10.1016/j.physletb.2015.10.086.
Abazov, Victor Mukhamedovich. Precise measurement of the top quark mass in dilepton decays using optimized neutrino weighting. United States. doi:10.1016/j.physletb.2015.10.086.
Abazov, Victor Mukhamedovich. Wed . "Precise measurement of the top quark mass in dilepton decays using optimized neutrino weighting". United States. doi:10.1016/j.physletb.2015.10.086. https://www.osti.gov/servlets/purl/1221343.
@article{osti_1221343,
title = {Precise measurement of the top quark mass in dilepton decays using optimized neutrino weighting},
author = {Abazov, Victor Mukhamedovich},
abstractNote = {We measure the top quark mass in dilepton final states of tt¯ events in pp¯ collisions at √s= 1.96 TeV, using data corresponding to an integrated luminosity of 9.7 fb-1 at the Fermilab Tevatron Collider. The analysis features a comprehensive optimization of the neutrino weighting method to minimize the statistical uncertainties. Furthermore, we improve the calibration of jet energies using the calibration determined in tt¯ → lepton + jets events, which reduces the otherwise limiting systematic uncertainty from the jet energy scale. As a result, the measured top quark mass is mt = 173.32±1.36(stat)±0.85(syst) GeV.},
doi = {10.1016/j.physletb.2015.10.086},
journal = {Physics Letters. Section B},
number = ,
volume = 752,
place = {United States},
year = {2015},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 5 works
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Figures / Tables:

FIG. 1. FIG. 1.: The distribution in the mass estimator, µw, for the combination of the ee, , and µµ channels for (a) the preselected sample and (b) the final event sample. The MC events are normalized separately to the number of observed events in data in each channel. The ratios show the total number of observed events divided by the number of expected events in a given bin of µmore » $w$ for $m$$^{MC}_t$ = 172.5 GeV. The band of systematic uncertainty is shown as the shaded area in the ratio plots, which includes contributions from the dominant sources: jet energy scale, lepton identification, lepton momentum scale, luminosity, b quark modeling, initial and final state radiation, color reconnection, as well as hadronization and higher-order QCD effects for $tt̄$ events.« less

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Works referencing / citing this record:

Precise measurement of the top quark mass in dilepton decays using optimized neutrino weighting
text, January 2016

  • Collaboration, D0; Abazov, Victor Mukhamedovich; Abbott, Braden Keim
  • RWTH Aachen University
  • DOI: 10.18154/rwth-2016-07786

    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.