SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 56: Searches EW I

T 56.5: Vortrag

Mittwoch, 22. März 2023, 16:50–17:05, HSZ/0403

Search for photon-induced semileptonic WW production at the ATLAS Experiment — •Varsiha Sothilingam for the ATLAS collaboration — Kirchhoff-Institut für Physik, Universität Heidelberg

Due to the non-abelien nature of the electroweak sector of the Standard Model of Particle Physics (SM), direct interactions between gauge couplings are possible. Measurements of the cross sections of these interactions allow for validation of the SM and potential deviations from it opens possibilities for physics beyond the SM. This talk will focus on the coupling between W bosons and photons where the W bosons decay semileptonically. They interact via the triple (γ → WW) and quartic (γ γ → WW) gauge couplings of the SM. This process can be produced via Centrally Exclusive Production at the LHC, where non-colliding protons produce a non-linear electromagnetic field which creates a photon pair. The photons couple to the W bosons, providing the signal of interest while the protons remain intact. These protons can be detected using the ATLAS Forward Proton (AFP) spectrometers, which are located around 200m away from the ATLAS detector, on both sides. This talk will provide insight to the measurement of this rare process and the methods used to optimise its signal. It will provide an insight to the different models of the final state which take advantage of the boosted topology of such events.