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=13TeV
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Date
2018
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Abstract
The cross sections for the production of tt�bb� and tt�jj events and their ratio ?tt�bb�/?tt�jj are measured using data corresponding to an integrated luminosity of 2.3 fb?1collected in pp collisions at s=13 TeV with the CMS detector at the LHC. Events with two leptons (e or ?) 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 ?tt�bb� is 4.0�0.6(stat)�1.3(syst) pb and ?tt�jj is 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. � 2017 The Author
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Keywords
CMS, Physics, Top quark
Citation
19