Measurement of the top quark mass in the tt¯→tt¯→ dilepton channel from s√=8s=8 TeV ATLAS data

ATLAS Collaboration

doi:10.1016/j.physletb.2016.08.042

Measurement of the top quark mass in the tt¯→tt¯→ dilepton channel from s√=8s=8 TeV ATLAS data

ATLAS Collaboration

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Abstract

The top quark mass is measured in the tt¯→dilepton channel (lepton=e,μ) using ATLAS data recorded in the year 2012 at the LHC. The data were taken at a proton–proton centre-of-mass energy of s=8TeV and correspond to an integrated luminosity of about 20.2fb−1. Exploiting the template method, and using the distribution of invariant masses of lepton–b-jet pairs, the top quark mass is measured to be mtop=172.99±0.41(stat)±0.74(syst) GeV, with a total uncertainty of 0.84GeV. Finally, a combination with previous ATLAS mtop measurements from s=7TeV data in the tt¯→dilepton and tt¯→lepton+jets channels results in mtop=172.84±0.34(stat)±0.61(syst) GeV, with a total uncertainty of 0.70GeV.

Original language	English
Pages (from-to)	350-371
Number of pages	22
Journal	Physics Letters B
Volume	761
DOIs	https://doi.org/10.1016/j.physletb.2016.08.042
Publication status	Published - 24 Aug 2016

Keywords

hep-ex

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@article{9327984bc84f46819cb10d788b79cb21,

title = "Measurement of the top quark mass in the tt¯→tt¯→ dilepton channel from s√=8s=8 TeV ATLAS data",

abstract = "The top quark mass is measured in the tt¯→dilepton channel (lepton=e,μ) using ATLAS data recorded in the year 2012 at the LHC. The data were taken at a proton–proton centre-of-mass energy of s=8TeV and correspond to an integrated luminosity of about 20.2fb−1. Exploiting the template method, and using the distribution of invariant masses of lepton–b-jet pairs, the top quark mass is measured to be mtop=172.99±0.41(stat)±0.74(syst) GeV, with a total uncertainty of 0.84GeV. Finally, a combination with previous ATLAS mtop measurements from s=7TeV data in the tt¯→dilepton and tt¯→lepton+jets channels results in mtop=172.84±0.34(stat)±0.61(syst) GeV, with a total uncertainty of 0.70GeV.",

keywords = "hep-ex",

author = "Brian Cox and Stephen Watts and Terence Wyatt and {Da Via}, Cinzia and Joleen Pater and Andrew Pilkington and Darren Price and Alexander Oh and {ATLAS Collaboration}",

note = "18 pages plus author list + cover pages (36 pages total), 3 figures, 2 tables. Submitted to PLB. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2016-03/",

year = "2016",

month = aug,

day = "24",

doi = "10.1016/j.physletb.2016.08.042",

language = "English",

volume = "761",

pages = "350--371",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Measurement of the top quark mass in the tt¯→tt¯→ dilepton channel from s√=8s=8 TeV ATLAS data

AU - Cox, Brian

AU - Watts, Stephen

AU - Wyatt, Terence

AU - Da Via, Cinzia

AU - Pater, Joleen

AU - Pilkington, Andrew

AU - Price, Darren

AU - Oh, Alexander

AU - ATLAS Collaboration

N1 - 18 pages plus author list + cover pages (36 pages total), 3 figures, 2 tables. Submitted to PLB. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2016-03/

PY - 2016/8/24

Y1 - 2016/8/24

N2 - The top quark mass is measured in the tt¯→dilepton channel (lepton=e,μ) using ATLAS data recorded in the year 2012 at the LHC. The data were taken at a proton–proton centre-of-mass energy of s=8TeV and correspond to an integrated luminosity of about 20.2fb−1. Exploiting the template method, and using the distribution of invariant masses of lepton–b-jet pairs, the top quark mass is measured to be mtop=172.99±0.41(stat)±0.74(syst) GeV, with a total uncertainty of 0.84GeV. Finally, a combination with previous ATLAS mtop measurements from s=7TeV data in the tt¯→dilepton and tt¯→lepton+jets channels results in mtop=172.84±0.34(stat)±0.61(syst) GeV, with a total uncertainty of 0.70GeV.

AB - The top quark mass is measured in the tt¯→dilepton channel (lepton=e,μ) using ATLAS data recorded in the year 2012 at the LHC. The data were taken at a proton–proton centre-of-mass energy of s=8TeV and correspond to an integrated luminosity of about 20.2fb−1. Exploiting the template method, and using the distribution of invariant masses of lepton–b-jet pairs, the top quark mass is measured to be mtop=172.99±0.41(stat)±0.74(syst) GeV, with a total uncertainty of 0.84GeV. Finally, a combination with previous ATLAS mtop measurements from s=7TeV data in the tt¯→dilepton and tt¯→lepton+jets channels results in mtop=172.84±0.34(stat)±0.61(syst) GeV, with a total uncertainty of 0.70GeV.

KW - hep-ex

U2 - 10.1016/j.physletb.2016.08.042

DO - 10.1016/j.physletb.2016.08.042

M3 - Article

SN - 0370-2693

VL - 761

SP - 350

EP - 371

JO - Physics Letters B

JF - Physics Letters B

ER -

Measurement of the top quark mass in the tt¯→tt¯→ dilepton channel from s√=8s=8 TeV ATLAS data

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Keywords

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