Measurement of the t t over bar production cross section in ppcollisions at root s 7 TeV using the kinematic properties of events withleptons and jets
Yazarlar (1)
Doç. Dr. Mustafa Numan BAKIRCI Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı European Physical Journal C (Q4)
Dergi ISSN 1434-6044 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI
Makale Dili İngilizce Basım Tarihi 09-2011
Cilt / Sayı / Sayfa 71 / 9 / 1–27 DOI 10.1140/epjc/s10052-011-1721-3
UAK Araştırma Alanları
Yüksek Enerji ve Parçacık Fiziği
Özet
A measurement of the tt̄ production cross section in proton-proton collisions at a centre-of-mass energy of 7 TeV has been performed at the LHC with the CMS detector. The analysis uses a data sample corresponding to an integrated luminosity of 36 pb-1 and is based on the reconstruction of the final state with one isolated, high transverse-momentum electron or muon and three or more hadronic jets. The kinematic properties of the events are used to separate the tt̄ signal from W+jets and QCD multijet background events. The measured cross section is 173 +39 -32 (stat. + syst.) pb, consistent with standard model expectations. © 2011 CERN for the benefit of the CMS collaboration.
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