Measurements of polarization and spin correlation and observation of entanglement in top quark pairs using lepton plus jets events from proton-proton collisions at √s=13 TeV
Yazarlar (1)
Prof. Dr. Hasan OĞUL Sinop Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Physical Review D (Q1)
Dergi ISSN 2470-0010 Dergi Bilgileri (2024)
Makale Dili İngilizce Basım Tarihi 12-2024
Cilt / Sayı / Sayfa 110 / 11 / 112016–0 DOI 10.1103/PhysRevD.110.112016
Makale Linki https://journals.aps.org/prd/abstract/10.1103/PhysRevD.110.112016
UAK Araştırma Alanları
Fen Bilimleri ve Matematik
Özet
Measurements of the polarization and spin correlation in top quark pairs () are presented using events with a single electron or muon and jets in the final state. The measurements are based on proton-proton collision data from the LHC at collected by the CMS experiment, corresponding to an integrated luminosity of . All coefficients of the polarization vectors and the spin correlation matrix are extracted simultaneously by performing a binned likelihood fit to the data. The measurement is performed inclusively and in bins of additional observables, such as the mass of the system and the top quark scattering angle in the rest frame. The measured polarization and spin correlation are in agreement with the standard model. From the measured spin correlation, conclusions on the spin entanglement are drawn by applying the Peres-Horodecki criterion. The standard model predicts entangled spins for states …
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