Evidence for associated production of a Higgs boson with a top quark pair in final states with electrons, muons, and hadronically decaying τ leptons at √s=13 TeV
Yazarlar (1)
Doç. Dr. Mustafa Numan BAKIRCI Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (SCOPUS dergilerinde yayınlanan tam makale)
Dergi Adı Journal of High Energy Physics
Dergi ISSN 1126-6708
Makale Dili İngilizce Basım Tarihi 08-2018
Cilt / Sayı / Sayfa 2018 / 8 / – DOI 10.1007/JHEP08(2018)066
Makale Linki http://hdl.handle.net/11424/91755
UAK Araştırma Alanları
Fen Bilimleri ve Matematik
Özet
Results of a search for the standard model Higgs boson produced in association with a top quark pair () in final states with electrons, muons, and hadronically decaying τ leptons are presented. The analyzed data set corresponds to an integrated luminosity of 35.9 fb− 1 recorded in proton-proton collisions at TeV by the CMS experiment in 2016. The sensitivity of the search is improved by using matrix element and machine learning methods to separate the signal from backgrounds. The measured signal rate amounts to 1.23+ 0.45− 0.43 times the production rate expected in the standard model, with an observed (expected) significance of 3.2σ (2.8σ), which represents evidence for production in those final states. An upper limit on the signal rate of 2.1 times the standard model production rate is set at 95% confidence level.
Anahtar Kelimeler
Hadron-Hadron scattering (experiments) | Higgs physics | Top physics