Measurement of the WbWb differential cross-section in the dilepton channel with the ATLAS detector at √s =13 TeV

In this thesis, a measurement of the inclusive WbWb differential cross section is provided as a function of some basic kinematic variables, making use of the full ATLAS Run-2 dataset at √s = 13 TeV and 139 fb^−1 integrated luminosity. The measurement is performed in the dilepton channel, considering opposite sign (OS) eµ final states with at least two b-jets. The result will allow to assess and tune new Monte Carlo generators performances. These measurements are required in order to ensure that basic kinematics in the event and the interference effect between ttbar at LO and tW at NLO are properly modelled.