Karlsruhe 2024 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

T: Fachverband Teilchenphysik

T 26: Invited Topical Talks 1

T 26.2: Eingeladener Vortrag

Dienstag, 5. März 2024, 14:30–15:00, Geb. 30.21: Gerthsen-HS

Study of electroweak interactions via vector boson scattering at the ATLAS detector — •Gia Khoriauli — Julius-Maximilians-Universität Würzburg

The LHC has opened the possibility of experimental studies of the self-interactions of the electroweak vector bosons in proton-proton collisions at the TeV energy scale. Electroweak vector boson scattering (VBS) processes imply the interactions between two vector bosons that produce two final state vector bosons. The production is accompanied with two energetic back-to-back hadronic jets in the forward regions of the detector. These jets are initiated from the interacting quarks which radiated the scattering vector bosons. Leading order amplitudes of the electroweak VBS processes are sensitive to the triple and quartic gauge couplings between the vector bosons as well as to their couplings with the Higgs boson. Measurements of these processes are therefore important tests of the Standard Model and its symmetry breaking mechanism. The electroweak VBS final states have relatively low production cross sections at the LHC energies. This makes them sensitive to possible new physics effects that lead to anomalous quartic gauge couplings between the vector bosons and hence, to measurable deviations from the Standard Model predictions. Studies of various electroweak VBS final states at the ATLAS detector are presented. Experimental methods of the measurements and effective field theory interpretations of the results for model-independent searches for anomalous quartic gauge couplings are discussed.

Keywords: ATLAS; Electroweak; VBS; aQGC; EFT