Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/5909
Title: Measurement of the Cross Section Ratio Σtt¯bb¯/Σtt¯jj in Pp Collisions at S=8 Tev
Authors: Karapınar, Güler
CMS Collaboration
Bergauer, T.
Dragicevic, M.
Malgeri, L.
Tumasyan, A.
Keywords: Cms
Physics
Top Physics
Publisher: Elsevier B.V.
Source: Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M.,...CMS Collaboration (2015). Measurement of the cross section ratio σttbb/σttjj in pp collisions at √s=8 TeV. Physics Letters, Section B, 746, 132-153. doi:10.1016/j.physletb.2015.04.060
Abstract: The first measurement of the cross section ratio σtt¯bb¯/σtt¯jj is presented using a data sample corresponding to an integrated luminosity of 19.6 fb−1 collected in pp collisions at s=8 TeV with the CMS detector at the LHC. Events with two leptons (e or μ) 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 pT of both 20 and 40 GeV/c. The measured ratio is 0.022±0.003(stat)±0.005(syst) for pT>20 GeV/c. The absolute cross sections σtt¯bb¯ and σtt¯jj are also measured. The measured ratio for pT>40 GeV/c is compatible with a theoretical quantum chromodynamics calculation at next-to-leading order. © 2015 CERN for the benefit of the CMS Collaboration
URI: https://doi.org/10.1016/j.physletb.2015.04.060
ISSN: 0370-2693
Appears in Collections:Mathematics / Matematik
Rectorate / Rektörlük
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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