SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 108: Top, EW I

T 108.4: Vortrag

Donnerstag, 23. März 2023, 16:35–16:50, HSZ/0103

Measurement of the differential W→µν cross section at high transverse masses at √s=13 TeV with the ATLAS detector — Frank Ellinghaus and •Johanna Wanda Kraus — Bergische Universität Wuppertal

The measurement of the differential cross section of the charged-current Drell-Yan process in the decay W→µν is presented. It is based on pp-collision data taken with the ATLAS detector during the LHC Run-2 at a center-of-mass energy of √s = 13 TeV, corresponding to an integrated luminosity of L = 139 fb⁻¹. The cross section is measured double-differentially as a function of the transverse mass m_T^W and the pseudorapidity of the muon with a focus on the high transverse mass region above 200 GeV. This is done for the first time and will allow for constraints on the parton distribution functions of the proton and on effective field theories. A short overview of the complete analysis will be given with a focus on studies of the unfolding procedure via Iterative Bayesian Unfolding.