Szczegóły publikacji
Opis bibliograficzny
Search for leptonic charge asymmetry in $t\bar{t}W$ production in final states with three leptons at $\sqrt{s}$=13 TeV / G. Aad, [et al.], L. ADAMCZYK, [et al.], T. BOŁD, [et al.], K. M. CIEŚLA, [et al.], W. DĄBROWSKI, [et al.], M. DYNDAŁ, [et al.], A. K. GILBERT, [et al.], I. GRABOWSKA-BOŁD, [et al.], K. W. JANAS, [et al.], S. KOPERNY, [et al.], I. K. ŁAKOMIEC, [et al.], K. MAJ, [et al.], B. MINDUR, [et al.], A. OGRODNIK, [et al.], P. P. POTĘPA, [et al.], M. PRZYBYCIEŃ, [et al.], R. SIKORA, [et al.] // The Journal of High Energy Physics [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 1029-8479 . — 2023 — iss. 7 art. no. 33, s. [1], 1–53. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 29–34, Abstr. — Publikacja dostępna online od: 2023-07-05
Autorzy (2935)
- AGHAdamczyk Leszek
- AGHBołd Tomasz
- AGHCieśla Krzysztof
- AGHDąbrowski Władysław
- AGHDyndał Mateusz
- AGHGilbert Alexander
- AGHGrabowska-Bołd Iwona
- AGHJanas Krzysztof W.
- AGHKoperny Stefan
- AGHŁakomiec Inga K.
- AGHMaj Klaudia
- AGHMindur Bartosz
- AGHOgrodnik Agnieszka
- AGHPotępa Patrycja Anna
- AGHPrzybycień Mariusz
- AGHSikora Rafał
- Aad Georges
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 148275 |
|---|---|
| Data dodania do BaDAP | 2023-09-28 |
| Tekst źródłowy | URL |
| DOI | 10.1007/JHEP07(2023)033 |
| Rok publikacji | 2023 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | The Journal of High Energy Physics |
Abstract
A search for the leptonic charge asymmetry (Acℓ) of top-quark-antiquark pair production in association with a W boson (tt¯ W) is presented. The search is performed using final states with exactly three charged light leptons (electrons or muons) and is based on s = 13 TeV proton-proton collision data collected with the ATLAS detector at the Large Hadron Collider at CERN during the years 2015–2018, corresponding to an integrated luminosity of 139 fb −1. A profile-likelihood fit to the event yields in multiple regions corresponding to positive and negative differences between the pseudorapidities of the charged leptons from top-quark and top-antiquark decays is used to extract the charge asymmetry. At reconstruction level, the asymmetry is found to be −0.12 ± 0.14 (stat.) ± 0.05 (syst.). An unfolding procedure is applied to convert the result at reconstruction level into a charge-asymmetry value in a fiducial volume at particle level with the result of −0.11 ± 0.17 (stat.) ± 0.05 (syst.). The Standard Model expectations for these two observables are calculated using Monte Carlo simulations with next-to-leading-order plus parton shower precision in quantum chromodynamics and including next-to-leading-order electroweak corrections. They are −0.084−0.003+0.005 (scale) ± 0.006 (MC stat.) and −0.063−0.004+0.007 (scale) ± 0.004 (MC stat.) respectively, and in agreement with the measurements.
