The cross sections for the production of t¯tb¯band t¯tjjevents and their ratio σt¯tb¯b/σt¯tjj are measured using data corresponding to an integrated luminosity of 2.3fb−1collected in pp collisions at √s=13TeVwith the CMS detector at the LHC. Events with two leptons (eor μ) and at least four reconstructed jets, including at least two identified as b quark jets, in the final state are selected. In the full phase space, the measured ratio is 0.022 ±0.003 (stat)±0.006 (syst), the cross section σt¯tb¯bis 4.0 ±0.6 (stat)±1.3 (syst)pband σt¯tjjis 184 ±6 (stat)±33 (syst)pb. The measurements are compared with the standard model expectations obtained from a powheg simulation at next-to-leading-order interfaced with pythia.
(2018). Measurements of tt cross sections in association with b jets and inclusive jets and their ratio using dilepton final states in pp collisions at √s=13 TeV [journal article - articolo]. In PHYSICS LETTERS. SECTION B. Retrieved from http://hdl.handle.net/10446/140690
Measurements of tt cross sections in association with b jets and inclusive jets and their ratio using dilepton final states in pp collisions at √s=13 TeV
Re, V.;Vai, I.;
2018-01-01
Abstract
The cross sections for the production of t¯tb¯band t¯tjjevents and their ratio σt¯tb¯b/σt¯tjj are measured using data corresponding to an integrated luminosity of 2.3fb−1collected in pp collisions at √s=13TeVwith the CMS detector at the LHC. Events with two leptons (eor μ) and at least four reconstructed jets, including at least two identified as b quark jets, in the final state are selected. In the full phase space, the measured ratio is 0.022 ±0.003 (stat)±0.006 (syst), the cross section σt¯tb¯bis 4.0 ±0.6 (stat)±1.3 (syst)pband σt¯tjjis 184 ±6 (stat)±33 (syst)pb. The measurements are compared with the standard model expectations obtained from a powheg simulation at next-to-leading-order interfaced with pythia.File | Dimensione del file | Formato | |
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