Электронный каталог

Статья

Tumasyan, A.
Measurement of the Top Quark Pole Mass Using tt^- + Jet Events in the Dilepton Final State in Proton-Proton Collisions at *%s=13 TeV / A.Tumasyan, 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., Z.Tsamalaidze, N.Krasnikov, [CMS Collab.] // Journal of High Energy Physics [Electronic resource]. – 2023. – Vol.2023, No.7. – P.077. – URL: https://doi.org/10.1007/JHEP07(2023)077. – Bibliogr.:116.

A measurement of the top quark pole mass in events where a top quark-antiquark pair () is produced in association with at least one additional jet (+jet) is presented. This analysis is performed using proton-proton collision data at = 13 TeV collected by the CMS experiment at the CERN LHC, corresponding to a total integrated luminosity of 36.3 fb−1. Events with two opposite-sign leptons in the final state (e+e−, μ+μ−, e±μ∓) are analyzed. The reconstruction of the main observable and the event classification are optimized using multivariate analysis techniques based on machine learning. The production cross section is measured as a function of the inverse of the invariant mass of the +jet system at the parton level using a maximum likelihood unfolding. Given a reference parton distribution function (PDF), the top quark pole mass is extracted using the theoretical predictions at next-to-leading order. For the ABMP16NLO PDF, this results in = 172.93 ± 1.36 GeV.



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