Measurement of the cross section ratio σtt¯bb¯tt¯jj in pp collisions at s=8 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 Physics Letters Section B Nuclear Elementary Particle and High Energy Physics
Dergi ISSN 0370-2693 Wos Dergi Scopus Dergi
Makale Dili İngilizce Basım Tarihi 06-2015
Cilt / Sayı / Sayfa 746 / 1 / 132–153 DOI 10.1016/j.physletb.2015.04.060
Makale Linki https://www.sciencedirect.com/science/article/pii/S0370269315003263/pdfft?md5=191f8008cf1ad4f195230aead726b7bf&pid=1-s2.0-S0370269315003263-main.pdf
UAK Araştırma Alanları
Fen Bilimleri ve Matematik
Özet
The first measurement of the cross section ratio is presented using a data sample corresponding to an integrated luminosity of 19.6 fb collected in pp collisions at = 8 TeV with the CMS detector at the LHC. Events with two leptons ( or ) and four reconstructed jets, including two identified as b quark jets, in the final state are selected. The ratio is determined for a minimum jet transverse momentum of both 20 and 40 GeV/. The measured ratio is 0.022 0.003 (stat) 0.005 (syst) for greater than 20 GeV/. The absolute cross sections and are also measured. The measured ratio for greater than 40 GeV/ is compatible with a theoretical quantum chromodynamics calculation at next-to-leading order.
Anahtar Kelimeler
CMS | Physics | Top physics