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dc.contributor.authorKhachatryan, Vardan
dc.contributor.authorSirunyan, A.M.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, Wolfgang
dc.contributor.authorBergauer, T.
dc.contributor.authorDragicevic, M.
dc.contributor.authorBaarmand, Marc M.
dc.contributor.authorHohlmann, Marcus
dc.contributor.authorKalakhety, Himali
dc.contributor.authorYumiceva, Francisco
dc.date.accessioned2016-01-25T22:22:42Z
dc.date.available2016-01-25T22:22:42Z
dc.date.issued2015-06-30
dc.identifier.citationKhachatryan, V., Sirunyan, A. M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., ... & Ghete, V. M. (2015). Measurement of the cross section ratio σttbb/σttjj in pp collisions at√ s= 8 TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 746, 132-153.en_US
dc.identifier.urihttp://hdl.handle.net/11141/791
dc.description.abstractThe 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 > 20 GeV/c. The absolute cross sections σttbb and σttjj are also measured. The measured ratio for pT > 40 GeV/c is compatible with a theoretical quantum chromodynamics calculation at next-to-leading order.en_US
dc.language.isoen_USen_US
dc.rightsV. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.en_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.titleMeasurement of the cross section ratio σttbb/σttjj in pp collisions at √s=8 TeVen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.physletb.2015.04.060


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V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.
Except where otherwise noted, this item's license is described as V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.