Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/5909
Title: Measurement of the cross section ratio ?ttbb/?ttjj in pp collisions at ?s=8 TeV
Authors: CMS Collaboration
Karapınar, Güler
Karapınar, Güler
Keywords: Compact Muon Solenoid
Large Hadron Collider (LHC)
Quantum Chromodynamics (QCD)
Issue Date: Jun-2015
Publisher: Elsevier Ltd.
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 σttbb/σttjj 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>20GeV/c. The absolute cross sections σttbb and σttjj are also measured. The measured ratio for pT>40GeV/c is compatible with a theoretical quantum chromodynamics calculation at next-to-leading order. © 2015 CERN for the benefit of the CMS Collaboration.
URI: http://doi.org/10.1016/j.physletb.2015.04.060
http://hdl.handle.net/11147/5909
ISSN: 0370-2693
Appears in Collections:Mathematics / Matematik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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