Measurement of associated production of vector bosons and topquark antiquark pairs in pp collisions at root s 7 TeV
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 Physical Review Letters (Q4)
Dergi ISSN 0031-9007 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI
Makale Dili İngilizce Basım Tarihi 01-2013
Cilt / Sayı / Sayfa 110 / 17 / – DOI 10.1103/PhysRevLett.110.172002
UAK Araştırma Alanları
Yüksek Enerji ve Parçacık Fiziği
Özet
The first measurement of vector-boson production associated with a top quark-antiquark pair in proton-proton collisions at is presented. The results are based on a data set corresponding to an integrated luminosity of , recorded by the CMS detector at the LHC in 2011. The measurement is performed in two independent channels through a trilepton analysis of events and a same-sign dilepton analysis of ( or ) events. In the trilepton channel a direct measurement of the cross section is obtained. In the dilepton channel a measurement of the cross section yields . These measurements have a significance, respectively, of 3.3 and 3.0 standard deviations from the background hypotheses and are compatible, within uncertainties, with the corresponding next-to-leading order predictions of and .
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