Measurement of the cross section and muon charge asymmetry from charged current Drell-Yan process at 13 TeV centre of mass energy with the ATLAS detector

This thesis documents the measurements of the W → μν (charged current Drell-Yan Process) production cross section and the muon charge asymmetry. Experimental data and Monte Carlo samples, from proton-proton collisions at a centre of mass energy of 13 TeV, corresponding to a total integrated luminosity of 44.3 fb−1 are utilised; the data presented was recorded by the ATLAS experiment at the Large Hadron Collider during the year 2017. The measurements are performed differentially in muon pseudorapidity |ημ| and are within the W boson invariant mass in a kinematic fiducial volume of muon and neutrino transverse momentum pμ,ν > 30 GeV and muon pseudorapidity |ημ| < 2.4. The fiducial measurements uncertainties are below 2% empowering these measurements to constrain the modelling of the proton composition.