Würzburg 2018 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 83: Elektroschwache Wechselwirkung II

T 83.4: Vortrag

Donnerstag, 22. März 2018, 17:15–17:30, Z6 - SR 1.005

Measurement of the Scattering of Electroweak Gauge Bosons in the WZjj Final State with the ATLAS Detector at the LHC — •Carsten Bittrich, Tim Herrmann, Michael Kobel, Franziska Iltzsche, Joany Manjarres, and Stefanie Todt — IKTP, TU Dresden

The scattering of massive gauge bosons, measurable at the LHC in the final states with decay products of two massive gauge bosons and two additional jets, is an essential process for the studies of the mechanism of electroweak symmetry breaking (EWSB) and provides a mean to study the gauge structure of the Standard Model via the quartic gauge couplings. The channel of WZ/γ → WZ scattering provides a good compromise between reconstructability of the boson kinematics and expected number of events. This process is studied in the final state with three charged leptons, missing energy and two jets at a center of mass energy of 13 TeV using the 2015 and 2016 dataset of the ATLAS detector in Run 2 of the LHC. Machine learning techniques are used to extract signal-like events allowing for the first measurement of this process.