Measurement of the tt̄ production cross section in the τ+jets channel in pp collisions at √s = 7 TeV
Yazarlar (1)
Doç. Dr. Mustafa Numan BAKIRCI Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Açık Erişim Diğer (Teknik, not, yorum, vaka takdimi, editöre mektup, özet, kitap krıtiği, araştırma notu, bilirkişi raporu ve benzeri) (SCOPUS dergilerinde yayınlanan teknik not, editöre mektup, tartışma, vaka takdimi ve özet türünden makale)
Dergi Adı European Physical Journal C
Dergi ISSN 1434-6044 Wos Dergi Scopus Dergi
Makale Dili İngilizce Basım Tarihi 04-2013
Cilt / Sayı / Sayfa 73 / 4 / 1–18 DOI 10.1140/epjc/s10052-013-2386-x
UAK Araştırma Alanları
Yüksek Enerji ve Parçacık Fiziği
Özet
The top-quark pair production cross section in 7 TeV center-of-mass energy proton-proton collisions is measured using data collected by the CMS detector at the LHC. The measurement uses events with one jet identified as a hadronically decaying τ lepton and at least four additional energetic jets, at least one of which is identified as coming from a b quark. The analyzed data sample corresponds to an integrated luminosity of 3.9 fb-1 recorded by a dedicated multijet plus hadronically decaying τ trigger. A neural network has been developed to separate the top-quark pairs from the W+jets and multijet backgrounds. The measured value of σtt̄= 152 ± 12,(stat.) ± 32,(syst.) ±,(lum.) pb is consistent with the standard model predictions. © 2013 CERN for the benefit of the CMS collaboration.
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