Combination of inclusive and differential   tt¯  charge asymmetry measurements using ATLAS and CMS data at   s√=7  and 8 TeV

The CMS Collaboration; ATLAS Collaboration

doi:10.1007/JHEP04(2018)033

Combination of inclusive and differential tt¯ charge asymmetry measurements using ATLAS and CMS data at s√=7 and 8 TeV

The CMS Collaboration, ATLAS Collaboration

Physics and Astronomy

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Abstract

This paper presents combinations of inclusive and differential measurements of the charge asymmetry (AC) in top quark pair (tt¯) events with a lepton+jets signature by the ATLAS and CMS Collaborations, using data from LHC proton-proton collisions at centre-of-mass energies of 7 and 8 TeV. The data correspond to integrated luminosities of about 5 and 20 fb−1 for each experiment, respectively. The resulting combined LHC measurements of the inclusive charge asymmetry are A C CHC7 = 0.005 ± 0.007 (stat) ± 0.006(syst) at 7 TeV and A C CHC8 = 0.0055 ± 0.0023 (stat) ± 0.0025 (syst) at 8 TeV. These values, as well as the combination of AC measurements as a function of the invariant mass of the tt¯ system at 8 TeV, are consistent with the respective standard model predictions.

Original language	English
Article number	033
Journal	JHEP
Volume	04
DOIs	https://doi.org/10.1007/JHEP04(2018)033
Publication status	Published - 9 Apr 2018

Bibliographical note

Replaced with the published version. Figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/TOP-15-016 (CMS Public Pages) and https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2016-16 (ATLAS pages)

Keywords

hep-ex

Access to Document

10.1007/JHEP04(2018)033Licence: Creative Commons: Attribution (CC BY)

ATLAS_Combination_of_inlcusive_and_differential_JHEP_2018
Checked for eligibility 05/12/2018 https://doi.org/10.1007/JHEP04(2018)033
Final published version, 1.46 MBLicence: Creative Commons: Attribution (CC BY)

https://link.springer.com/article/10.1007%2FJHEP04%282018%29033Licence: Creative Commons: Attribution (CC BY)

Cite this

@article{b1fb013b2c0f4e24805b2753c5409a59,

title = "Combination of inclusive and differential tt¯ charge asymmetry measurements using ATLAS and CMS data at s√=7 and 8 TeV",

abstract = "This paper presents combinations of inclusive and differential measurements of the charge asymmetry (AC) in top quark pair (tt¯) events with a lepton+jets signature by the ATLAS and CMS Collaborations, using data from LHC proton-proton collisions at centre-of-mass energies of 7 and 8 TeV. The data correspond to integrated luminosities of about 5 and 20 fb−1 for each experiment, respectively. The resulting combined LHC measurements of the inclusive charge asymmetry are A C CHC7 = 0.005 ± 0.007 (stat) ± 0.006(syst) at 7 TeV and A C CHC8 = 0.0055 ± 0.0023 (stat) ± 0.0025 (syst) at 8 TeV. These values, as well as the combination of AC measurements as a function of the invariant mass of the tt¯ system at 8 TeV, are consistent with the respective standard model predictions.",

keywords = "hep-ex",

author = "{The CMS Collaboration} and {ATLAS Collaboration} and Paul Newman",

note = "Replaced with the published version. Figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/TOP-15-016 (CMS Public Pages) and https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2016-16 (ATLAS pages)",

year = "2018",

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day = "9",

doi = "10.1007/JHEP04(2018)033",

language = "English",

volume = "04",

journal = "JHEP",

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TY - JOUR

T1 - Combination of inclusive and differential tt¯ charge asymmetry measurements using ATLAS and CMS data at s√=7 and 8 TeV

AU - The CMS Collaboration

AU - ATLAS Collaboration

A2 - Newman, Paul

N1 - Replaced with the published version. Figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/TOP-15-016 (CMS Public Pages) and https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2016-16 (ATLAS pages)

PY - 2018/4/9

Y1 - 2018/4/9

N2 - This paper presents combinations of inclusive and differential measurements of the charge asymmetry (AC) in top quark pair (tt¯) events with a lepton+jets signature by the ATLAS and CMS Collaborations, using data from LHC proton-proton collisions at centre-of-mass energies of 7 and 8 TeV. The data correspond to integrated luminosities of about 5 and 20 fb−1 for each experiment, respectively. The resulting combined LHC measurements of the inclusive charge asymmetry are A C CHC7 = 0.005 ± 0.007 (stat) ± 0.006(syst) at 7 TeV and A C CHC8 = 0.0055 ± 0.0023 (stat) ± 0.0025 (syst) at 8 TeV. These values, as well as the combination of AC measurements as a function of the invariant mass of the tt¯ system at 8 TeV, are consistent with the respective standard model predictions.

AB - This paper presents combinations of inclusive and differential measurements of the charge asymmetry (AC) in top quark pair (tt¯) events with a lepton+jets signature by the ATLAS and CMS Collaborations, using data from LHC proton-proton collisions at centre-of-mass energies of 7 and 8 TeV. The data correspond to integrated luminosities of about 5 and 20 fb−1 for each experiment, respectively. The resulting combined LHC measurements of the inclusive charge asymmetry are A C CHC7 = 0.005 ± 0.007 (stat) ± 0.006(syst) at 7 TeV and A C CHC8 = 0.0055 ± 0.0023 (stat) ± 0.0025 (syst) at 8 TeV. These values, as well as the combination of AC measurements as a function of the invariant mass of the tt¯ system at 8 TeV, are consistent with the respective standard model predictions.

KW - hep-ex

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DO - 10.1007/JHEP04(2018)033

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