Measurements of the charge asymmetry in top-quark pair production in the dilepton final state at s =8 TeV with the ATLAS detector
(2016) In Physical Review D - Particles, Fields, Gravitation and Cosmology 94(3).- Abstract
- Measurements of the top-antitop quark pair production charge asymmetry in the dilepton channel, characterized by two high-pT leptons (electrons or muons), are presented using data corresponding to an integrated luminosity of 20.3 fb-1 from pp collisions at a center-of-mass energy s=8 TeV collected with the ATLAS detector at the Large Hadron Collider at CERN. Inclusive and differential measurements as a function of the invariant mass, transverse momentum, and longitudinal boost of the tt system are performed both in the full phase space and in a fiducial phase space closely matching the detector acceptance. Two observables are studied: ACℓℓ based on the selected leptons and ACtt based on the reconstructed tt final state. The inclusive... (More)
- Measurements of the top-antitop quark pair production charge asymmetry in the dilepton channel, characterized by two high-pT leptons (electrons or muons), are presented using data corresponding to an integrated luminosity of 20.3 fb-1 from pp collisions at a center-of-mass energy s=8 TeV collected with the ATLAS detector at the Large Hadron Collider at CERN. Inclusive and differential measurements as a function of the invariant mass, transverse momentum, and longitudinal boost of the tt system are performed both in the full phase space and in a fiducial phase space closely matching the detector acceptance. Two observables are studied: ACℓℓ based on the selected leptons and ACtt based on the reconstructed tt final state. The inclusive asymmetries are measured in the full phase space to be ACℓℓ=0.008±0.006 and ACtt=0.021±0.016, which are in agreement with the Standard Model predictions of ACℓℓ=0.0064±0.0003 and ACtt=0.0111±0.0004. © 2016 CERN. (Less)
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- publishing date
- 2016
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review D - Particles, Fields, Gravitation and Cosmology
- volume
- 94
- issue
- 3
- article number
- 032006
- publisher
- American Physical Society
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- scopus:84984920773
- ISSN
- 1550-2368
- DOI
- 10.1103/PhysRevD.94.032006
- language
- English
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- Cited By :1 Export Date: 13 July 2017
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@article{5f2c5d37-8865-40e3-9380-bbe10fd71cff, abstract = {{Measurements of the top-antitop quark pair production charge asymmetry in the dilepton channel, characterized by two high-pT leptons (electrons or muons), are presented using data corresponding to an integrated luminosity of 20.3 fb-1 from pp collisions at a center-of-mass energy s=8 TeV collected with the ATLAS detector at the Large Hadron Collider at CERN. Inclusive and differential measurements as a function of the invariant mass, transverse momentum, and longitudinal boost of the tt system are performed both in the full phase space and in a fiducial phase space closely matching the detector acceptance. Two observables are studied: ACℓℓ based on the selected leptons and ACtt based on the reconstructed tt final state. The inclusive asymmetries are measured in the full phase space to be ACℓℓ=0.008±0.006 and ACtt=0.021±0.016, which are in agreement with the Standard Model predictions of ACℓℓ=0.0064±0.0003 and ACtt=0.0111±0.0004. © 2016 CERN.}}, author = {{Aad, G and Abbott, B. and Abdallah, J and Abdinov, O and Abeloos, B and Aben, R and Åkesson, Torsten and Bocchetta, Simona and BRYNGEMARK, LENE and Doglioni, Caterina and Floderus, Anders and Hawkins, Anthony and Hedberg, Vincent and Ivarsson, Jenny and Jarlskog, Göran and Lytken, Else and Mjörnmark, Ulf and Smirnova, Oxana and Viazlo, Oleksandr}}, issn = {{1550-2368}}, language = {{eng}}, number = {{3}}, publisher = {{American Physical Society}}, series = {{Physical Review D - Particles, Fields, Gravitation and Cosmology}}, title = {{Measurements of the charge asymmetry in top-quark pair production in the dilepton final state at s =8 TeV with the ATLAS detector}}, url = {{http://dx.doi.org/10.1103/PhysRevD.94.032006}}, doi = {{10.1103/PhysRevD.94.032006}}, volume = {{94}}, year = {{2016}}, }