Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/5976
Title: Observation of top quark pairs produced in association with a vector boson in pp collisions at ?s = 8 TeV
Authors: CMS Collaboration
Karapınar, Güler
Karapınar, Güler
Izmir Institute of Technology. Mathematics
Keywords: Large Hadron Collider (LHC)
Compact Muon Solenoid
Electroweak interaction
Top physics
Issue Date: 2016
Publisher: Springer Verlag
Source: Sirunyan, A.M., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., Brandstetter, J.,...CMS Collaboration (2016). Observation of top quark pairs produced in association with a vector boson in pp collisions at √s = 8 TeV. Journal of High Energy Physics, 2016(1). doi:10.1007/JHEP01(2016)096
Abstract: Measurements of the cross sections for top quark pairs produced in association with a W or Z boson are presented, using 8 TeV pp collision data corresponding to an integrated luminosity of 19.5 fb-1, collected by the CMS experiment at the LHC. Final states are selected in which the associated W boson decays to a charged lepton and a neutrino or the Z boson decays to two charged leptons. Signal events are identified by matching reconstructed objects in the detector to specific final state particles from tt̄W or tt̄Z decays. The tt̄W cross section is measured to be (Formula Presented) fb with a significance of 4.8 standard deviations from the background-only hypothesis. The tt̄Z cross section is measured to be (Formula Presented) fb with a significance of 6.4 standard deviations from the background-only hypothesis. These measurements are used to set bounds on five anomalous dimension-six operators that would affect the tt̄W and tt̄Z cross sections. © 2016, Springer Verlag. All rights reserved.
URI: http://doi.org/10.1007/JHEP01(2016)096
http://hdl.handle.net/11147/5976
ISSN: 1029-8479
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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