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• W4386000942 abstract "A bstract Inclusive and differential measurements of the top–antitop ( $$ toverline{t} $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mi>t</mml:mi> <mml:mover> <mml:mi>t</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> ) charge asymmetry $$ {A}_{textrm{C}}^{toverline{t}} $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:msubsup> <mml:mi>A</mml:mi> <mml:mi>C</mml:mi> <mml:mrow> <mml:mi>t</mml:mi> <mml:mover> <mml:mi>t</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> </mml:mrow> </mml:msubsup> </mml:math> and the leptonic asymmetry $$ {A}_{textrm{C}}^{ell overline{ell}} $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:msubsup> <mml:mi>A</mml:mi> <mml:mi>C</mml:mi> <mml:mrow> <mml:mi>ℓ</mml:mi> <mml:mover> <mml:mi>ℓ</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> </mml:mrow> </mml:msubsup> </mml:math> are presented in proton–proton collisions at $$ sqrt{s} $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 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 $$ toverline{t} $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mi>t</mml:mi> <mml:mover> <mml:mi>t</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> charge asymmetry is measured to be $$ {A}_{textrm{C}}^{toverline{t}} $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:msubsup> <mml:mi>A</mml:mi> <mml:mi>C</mml:mi> <mml:mrow> <mml:mi>t</mml:mi> <mml:mover> <mml:mi>t</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> </mml:mrow> </mml:msubsup> </mml:math> = 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 $$ toverline{t} $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mi>t</mml:mi> <mml:mover> <mml:mi>t</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> 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." @default.
• W4386000942 created "2023-08-20" @default.
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