Measurement of lepton differential distributions and the top quark mass in tt¯ production in pp collisions at √s=8 TeV with the ATLAS detector

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https://doi.org/10.1140/epjc/s10052-017-5349-9
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Measurement of lepton differential distributions and the top quark mass in tt¯ production in pp collisions at √s=8 TeV with the ATLAS detector. / The ATLAS collaboration.
In: European Physical Journal C: Particles and Fields, No. 11, 804, 25.11.2017.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Bibtex

@article{43e008c51381438780f923c77e10d7d7,

title = "Measurement of lepton differential distributions and the top quark mass in tt¯ production in pp collisions at √s=8 TeV with the ATLAS detector",

abstract = "This paper presents single lepton and dilepton kinematic distributions measured in dileptonic tt¯ events produced in 20.2 fb−1 of √s=8 TeV pp collisions recorded by the ATLAS experiment at the LHC. Both absolute and normalised differential cross-sections are measured, using events with an opposite-charge eμ pair and one or two b-tagged jets. The cross-sections are measured in a fiducial region corresponding to the detector acceptance for leptons, and are compared to the predictions from a variety of Monte Carlo event generators, as well as fixed-order QCD calculations, exploring the sensitivity of the cross-sections to the gluon parton distribution function. Some of the distributions are also sensitive to the top quark pole mass; a combined fit of NLO fixed-order predictions to all the measured distributions yields a top quark mass value of mtpole=173.2±0.9±0.8±1.2 GeV, where the three uncertainties arise from data statistics, experimental systematics, and theoretical sources.",

author = "Barton, {Adam Edward} and Michael Beattie and Bertram, {Iain Alexander} and Guennadi Borissov and Bouhova-Thacker, {Evelina Vassileva} and Harald Fox and Grimm, {Kathryn Ann Tschann} and Henderson, {Robert Charles William} and Jones, {Roger William Lewis} and Vakhtang Kartvelishvili and Long, {Robin Eamonn} and Love, {Peter Allan} and Muenstermann, {Daniel Matthias Alfred} and Parker, {Adam Jackson} and Malcolm Skinner and Maria Smizanska and Walder, {James William} and Andy Wharton and Ben Whitmore and {The ATLAS collaboration}",

note = "{\textcopyright} CERN for the benefit of the ATLAS collaboration 2017 Funded by SCOAP3",

year = "2017",

month = nov,

day = "25",

doi = "10.1140/epjc/s10052-017-5349-9",

language = "English",

journal = "European Physical Journal C: Particles and Fields",

issn = "1434-6044",

publisher = "SPRINGER",

number = "11",

}

RIS

TY - JOUR

T1 - Measurement of lepton differential distributions and the top quark mass in tt¯ production in pp collisions at √s=8 TeV with the ATLAS detector

AU - Barton, Adam Edward

AU - Beattie, Michael

AU - Bertram, Iain Alexander

AU - Borissov, Guennadi

AU - Bouhova-Thacker, Evelina Vassileva

AU - Fox, Harald

AU - Grimm, Kathryn Ann Tschann

AU - Henderson, Robert Charles William

AU - Jones, Roger William Lewis

AU - Kartvelishvili, Vakhtang

AU - Long, Robin Eamonn

AU - Love, Peter Allan

AU - Muenstermann, Daniel Matthias Alfred

AU - Parker, Adam Jackson

AU - Skinner, Malcolm

AU - Smizanska, Maria

AU - Walder, James William

AU - Wharton, Andy

AU - Whitmore, Ben

AU - The ATLAS collaboration

PY - 2017/11/25

Y1 - 2017/11/25

N2 - This paper presents single lepton and dilepton kinematic distributions measured in dileptonic tt¯ events produced in 20.2 fb−1 of √s=8 TeV pp collisions recorded by the ATLAS experiment at the LHC. Both absolute and normalised differential cross-sections are measured, using events with an opposite-charge eμ pair and one or two b-tagged jets. The cross-sections are measured in a fiducial region corresponding to the detector acceptance for leptons, and are compared to the predictions from a variety of Monte Carlo event generators, as well as fixed-order QCD calculations, exploring the sensitivity of the cross-sections to the gluon parton distribution function. Some of the distributions are also sensitive to the top quark pole mass; a combined fit of NLO fixed-order predictions to all the measured distributions yields a top quark mass value of mtpole=173.2±0.9±0.8±1.2 GeV, where the three uncertainties arise from data statistics, experimental systematics, and theoretical sources.

AB - This paper presents single lepton and dilepton kinematic distributions measured in dileptonic tt¯ events produced in 20.2 fb−1 of √s=8 TeV pp collisions recorded by the ATLAS experiment at the LHC. Both absolute and normalised differential cross-sections are measured, using events with an opposite-charge eμ pair and one or two b-tagged jets. The cross-sections are measured in a fiducial region corresponding to the detector acceptance for leptons, and are compared to the predictions from a variety of Monte Carlo event generators, as well as fixed-order QCD calculations, exploring the sensitivity of the cross-sections to the gluon parton distribution function. Some of the distributions are also sensitive to the top quark pole mass; a combined fit of NLO fixed-order predictions to all the measured distributions yields a top quark mass value of mtpole=173.2±0.9±0.8±1.2 GeV, where the three uncertainties arise from data statistics, experimental systematics, and theoretical sources.

U2 - 10.1140/epjc/s10052-017-5349-9

DO - 10.1140/epjc/s10052-017-5349-9

M3 - Journal article

JO - European Physical Journal C: Particles and Fields

JF - European Physical Journal C: Particles and Fields

SN - 1434-6044

IS - 11

M1 - 804

ER -

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