Электронный каталог

Статья

Aad, G.
Combination of Inclusive Top-Quark Pair Production Cross-Section Measurements Using ATLAS and CMS Data at *%s=7 and 8 TeV / G.Aad, F.Ahmadov, I.N.Aleksandrov, V.A.Bednyakov, I.R.Boyko, I.A.Budagov, G.A.Chelkov, A.Cheplakov, E.Cherepanova, M.V.Chizhov, D.V.Dedovich, M.Demichev, A.Gongadze, M.I.Gostkin, N.Huseynov, N.Javadov, S.N.Karpov, Z.M.Karpova, E.Khramov, U.Kruchonak, V.Kukhtin, E.Ladygin, V.Lyubushkin, T.Lyubushkina, S.Malyukov, M.Mineev, E.Plotnikova, I.N.Potrap, F.Prokoshin, N.A.Rusakovich, M.Shiyakova, A.Soloshenko, S.Turchikhin, I.Yeletskikh, A.Zhemchugov, N.I.Zimine, S.Afanasiev, D.Budkouski, I.Golutvin, I.Gorbunov, V.Karjavine, V.Korenkov, A.Lanev, A.Malakhov, V.Matveev, V.Palichik, V.Perelygin, M.Savina, V.Shalaev, S.Shmatov, S.Shulha, V.Smirnov, O.Teryaev, N.Voytishin, B.S.Yuldashev, A.Zarubin, I.Zhizhin, M.Finger, M.Finger Jr., N.Krasnikov, Z.Tsamalaidze, [ATLAS Collab.], [CMS Collab.] // Journal of High Energy Physics [Electronic resource]. – 2023. – Vol.2023, No.7. – P.213. – URL: https://doi.org/10.1007/JHEP07(2023)213. – Bibliogr.:55.

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 = 7 TeV and about 20 fb−1 at = 8 TeV for each experiment. The combined cross-sections are determined to be 178.5 ± 4.7 pb at = 7 TeV and pb at = 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 GeV and .



ОИЯИ = ОИЯИ (JINR)2023
Спец.(статьи,препринты) = С 346.2в - Взаимодействие протонов с протонами
Спец.(статьи,препринты) = С 346.6д1 - Чармоний, боттомоний, топ-кварк. Очарованные частицы и др. резонансы из тяжелых кварков