> Detailanzeige
Aad, G.;
Abbott, B.;
Abbott, D. C.;
Abeling, K.;
Abidi, S. H.;
Aboulhorma, A.;
Abramowicz, H.;
Abreu, H.;
Abulaiti, Y.;
Abusleme Hoffman, A. C.;
Acharya, B. S.;
Achkar, B.;
Adam Bourdarios, C.;
Adamczyk, L.;
Adamek, L.;
Addepalli, S. V.;
Adelman, J.;
Adiguzel, A.;
Adorni, S.;
Adye, T.;
Affolder, A. A.;
Afik, Y.;
Agaras, M. N.;
Agarwala, J.;
[...]
Evidence for the charge asymmetry in pp → $$ t\overline{t} $$ production at $$ \sqrt{s} $$ = 13 TeV with the ATLAS detector
Teilen
Literatur-
verwaltung
Direktlink
Zur
Merkliste
Lösche von
Merkliste
Per Email teilen
Auf Twitter teilen
Auf Facebook teilen
Per Whatsapp teilen
- Medientyp: E-Artikel
- Titel: Evidence for the charge asymmetry in pp → $$ t\overline{t} $$ production at $$ \sqrt{s} $$ = 13 TeV with the ATLAS detector
- Beteiligte: Aad, G.; Abbott, B.; Abbott, D. C.; Abeling, K.; Abidi, S. H.; Aboulhorma, A.; Abramowicz, H.; Abreu, H.; Abulaiti, Y.; Abusleme Hoffman, A. C.; Acharya, B. S.; Achkar, B.; Adam Bourdarios, C.; Adamczyk, L.; Adamek, L.; Addepalli, S. V.; Adelman, J.; Adiguzel, A.; Adorni, S.; Adye, T.; Affolder, A. A.; Afik, Y.; Agaras, M. N.; Agarwala, J.; [...]
-
Erschienen:
Springer Science and Business Media LLC, 2023
- Erschienen in: Journal of High Energy Physics, 2023 (2023) 8
- Sprache: Englisch
- DOI: 10.1007/jhep08(2023)077
- ISSN: 1029-8479
- Entstehung:
- Anmerkungen:
- Beschreibung: Abstract Inclusive and differential measurements of the top–antitop ($$ t\overline{t} $$ t t ¯ ) charge asymmetry $$ {A}_{\textrm{C}}^{t\overline{t}} $$ A C t t ¯ and the leptonic asymmetry $$ {A}_{\textrm{C}}^{\ell \overline{\ell}} $$ A C ℓ ℓ ¯ are presented in proton–proton collisions at $$ \sqrt{s} $$ 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 $$ t\overline{t} $$ t t ¯ charge asymmetry is measured to be $$ {A}_{\textrm{C}}^{t\overline{t}} $$ A C t t ¯ = 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 $$ t\overline{t} $$ t t ¯ 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.
- Zugangsstatus: Freier Zugang