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Evidence for the ch...
Evidence for the charge asymmetry in pp -> t(t)over-bar production at root s=13 TeV with the ATLAS detector
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- Aad, G. (author)
- Aix Marseille Univ, CPPM, CNRS, IN2P3, Marseille, France
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- Asimakopoulou, Eleni M. (author)
- Uppsala universitet,Högenergifysik
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- Bergeås Kuutmann, Elin, 1980- (author)
- Uppsala universitet,Högenergifysik
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- Brenner, Richard (author)
- Uppsala universitet,Högenergifysik
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- Dimitriadi, Christina (author)
- Uppsala universitet,Högenergifysik,Univ Bonn, Phys Inst, Bonn, Germany
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- Ekelöf, Tord (author)
- Uppsala universitet,Högenergifysik
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- Ellajosyula, Venugopal (author)
- Uppsala universitet,Högenergifysik
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- Ellert, Mattias (author)
- Uppsala universitet,Högenergifysik
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- Ferrari, Arnaud, 1973- (author)
- Uppsala universitet,Högenergifysik
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- Gonzalez Suarez, Rebeca (author)
- Uppsala universitet,Högenergifysik
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- Mathisen, Thomas (author)
- Uppsala universitet,Högenergifysik
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- Ördek, Serhat (author)
- Uppsala universitet,Högenergifysik
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- Steentoft, Jonas (author)
- Uppsala universitet,Högenergifysik
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- Sunneborn Gudnadottir, Olga (author)
- Uppsala universitet,Högenergifysik
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- Zwalinski, L. (author)
- CERN, Geneva, Switzerland
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(creator_code:org_t)
- Springer, 2023
- 2023
- English.
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In: Journal of High Energy Physics (JHEP). - : Springer. - 1126-6708 .- 1029-8479.
- Related links:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Inclusive and differential measurements of the top-antitop ( t (t) over bar) charge asymmetry A(C)(t (t) over bar) and the leptonic asymmetry A(C)(l (l) over bar) are presented in proton-proton collisions at root s = 13 TeV recorded by the ATLAS experiment at the CERN Large Hadron Collider. The measurement uses the complete Run 2 dataset, corresponding to an integrated luminosity of 139 fb(-1), combines data in the single-lepton and dilepton channels, and employs reconstruction techniques adapted to both the resolved and boosted topologies. A Bayesian unfolding procedure is performed to correct for detector resolution and acceptance effects. The combined inclusive t (t) over bar charge asymmetry is measured to be A(C)(t (t) over bar) = 0.0068 +/- 0.0015, which differs from zero by 4.7 standard deviations. Differential measurements are performed as a function of the invariant mass, transverse momentum and longitudinal boost of the t (t) over bar system. Both the inclusive and differential measurements are found to be compatible with the Standard Model predictions, at next-to-next-to-leading order in quantum chromodynamics perturbation theory with next-to-leading-order electroweak corrections. The measurements are interpreted in the framework of the Standard Model effective field theory, placing competitive bounds on several Wilson coefficients.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Keyword
- Hadron-Hadron Scattering
- Top Physics
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Aad, G.
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Asimakopoulou, E ...
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Bergeås Kuutmann ...
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Brenner, Richard
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Dimitriadi, Chri ...
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Ekelöf, Tord
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Ellajosyula, Ven ...
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Ellert, Mattias
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Ferrari, Arnaud, ...
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Gonzalez Suarez, ...
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Mathisen, Thomas
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Ördek, Serhat
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Steentoft, Jonas
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Sunneborn Gudnad ...
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Zwalinski, L.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Subatomic Physic ...
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Journal of High ...
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Uppsala University