Электронный каталог

Статья

Tumasyan, A.
Measurement of the Differential tt^- Production Cross Section as a Function of the Jet Mass and Extraction of the Top Quark Mass in Hadronic Decays of Boosted Top Quarks / 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, Z.Tsamalaidze, N.Voytishin, B.S.Yuldashev, A.Zarubin, I.Zhizhin, N.Krasnikov, [CMS Collab.] // The European Physical Journal C [Electronic resource]. – 2023. – Vol.83, No.7. – P.560. – URL: https://doi.org/10.1140/epjc/s10052-023-11587-8. – Bibliogr.:111.

A measurement of the jet mass distribution in hadronic decays of Lorentz-boosted top quarks is presented. The measurement is performed in the lepton + jets channel of top quark pair production () events, where the lepton is an electron or muon. The products of the hadronic top quark decay are reconstructed using a single large-radius jet with transverse momentum greater than 400. The data were collected with the CMS detector at the LHC in proton-proton collisions and correspond to an integrated luminosity of 138. The differential production cross section as a function of the jet mass is unfolded to the particle level and is used to extract the top quark mass. The jet mass scale is calibrated using the hadronic W boson decay within the large-radius jet. The uncertainties in the modelling of the final state radiation are reduced by studying angular correlations in the jet substructure. These developments lead to a significant increase in precision, and a top quark mass of .



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