Szczegóły publikacji
Opis bibliograficzny
Combination of inclusive top-quark pair production cross-section measurements using ATLAS and CMS data at $\sqrt{s}$=7 and 8 TeV / G. Aad, [et al.], L. ADAMCZYK, [et al.], T. BOŁD, [et al.], W. DĄBROWSKI, [et al.], M. DYNDAŁ, [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. PALNI, [et al.], M. PRZYBYCIEŃ, [et al.], V. AVATI, L. GRZANKA, M. MALAWSKI, [et al.] // The Journal of High Energy Physics [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 1029-8479. — 2023 — iss. 7 art. no. 213, s. [1], 1–63. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 20–23, Abstr. — Publikacja dostępna online od: 2023-07-27
Autorzy (5244)
- AGHAdamczyk Leszek
- AGHAvati Valentina
- AGHBołd Tomasz
- AGHDąbrowski Władysław
- AGHDyndał Mateusz
- AGHGrabowska-Bołd Iwona
- AGHGrzanka Leszek
- AGHJanas Krzysztof W.
- AGHKoperny Stefan
- AGHŁakomiec Inga K.
- AGHMaj Klaudia
- AGHMalawski Maciej
- AGHMindur Bartosz
- AGHOgrodnik Agnieszka
- AGHPalni Prabhakar
- AGHPrzybycień Mariusz
- Aad Georges
Słowa kluczowe
Dane bibliometryczne
ID BaDAP | 149288 |
---|---|
Data dodania do BaDAP | 2023-12-01 |
Tekst źródłowy | URL |
DOI | 10.1007/JHEP07(2023)213 |
Rok publikacji | 2023 |
Typ publikacji | artykuł w czasopiśmie |
Otwarty dostęp | |
Creative Commons | |
Czasopismo/seria | The Journal of High Energy Physics |
Abstract
A combination of measurements of the inclusive top-quark pair production cross-section performed by ATLAS and CMS in proton–proton collisions at centre-of-mass energies of 7 and 8 TeV at the LHC is presented. The cross-sections are obtained using top-quark pair decays with an opposite-charge electron–muon pair in the final state and with data corresponding to an integrated luminosity of about 5 fb−1 at s√ = 7 TeV and about 20 fb−1 at s√ = 8 TeV for each experiment. The combined cross-sections are determined to be 178.5 ± 4.7 pb at s√ = 7 TeV and 243.3+6.0−5.9 pb at s√ = 8 TeV with a correlation of 0.41, using a reference top-quark mass value of 172.5 GeV. The ratio of the combined cross-sections is determined to be R8/7 = 1.363 ± 0.032. The combined measured cross-sections and their ratio agree well with theory calculations using several parton distribution function (PDF) sets. The values of the top-quark pole mass (with the strong coupling fixed at 0.118) and the strong coupling (with the top-quark pole mass fixed at 172.5 GeV) are extracted from the combined results by fitting a next-to-next-to-leading-order plus next-to-next-to-leading-log QCD prediction to the measurements. Using a version of the NNPDF3.1 PDF set containing no top-quark measurements, the results obtained are mpolet=173.4+1.8−2.0 GeV and αs(mZ)=0.1170+0.0021−0.0018.