Measurement of the top quark Yukawa coupling from t(t)over-bar kinematic distributions in the lepton plus jets final state in proton-proton collisions at √s=13 TeV
Yazarlar (1)
Prof. Dr. Hasan OĞUL Sinop Üniversitesi, Türkiye
| Makale Türü |
Özgün Makale
(SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
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| Dergi Adı | Physical Review D (Q1) | ||
| Dergi ISSN | 2470-0010 Dergi Bilgileri (2019) | ||
| Makale Dili | İngilizce | Basım Tarihi | 10-2019 |
| Cilt / Sayı / Sayfa | 100 / 7 / 72007–0 | DOI | 10.1103/PhysRevD.100.072007 |
| Makale Linki | https://arxiv.org/abs/1907.01590 | ||
| UAK Araştırma Alanları |
Fen Bilimleri ve Matematik
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| Özet |
| Results are presented for an extraction of the top quark Yukawa coupling from top quark-antiquark () kinematic distributions in the lepton plus jets final state in proton-proton collisions, based on data collected by the CMS experiment at the LHC at 13 TeV, corresponding to an integrated luminosity of 35.8 fb. Corrections from weak boson exchange, including Higgs bosons, between the top quarks can produce large distortions of differential distributions near the energy threshold of production. Therefore, precise measurements of these distributions are sensitive to the Yukawa coupling. Top quark events are reconstructed with at least three jets in the final state, and a novel technique is introduced to reconstruct the system for events with one missing jet. This technique enhances the experimental sensitivity in the low invariant mass region, . The data yields in , the rapidity difference , and the number of reconstructed jets are compared with distributions representing different Yukawa couplings. These comparisons are used to measure the ratio of the top quark Yukawa coupling to its standard model predicted value to be 1.07 with an upper limit of 1.67 at the 95% confidence level. |
| Anahtar Kelimeler |
BM Sürdürülebilir Kalkınma Amaçları
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