Erlangen 2026 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 48: Methods in Particle Physics III

T 48.5: Vortrag

Mittwoch, 18. März 2026, 17:15–17:30, KH 00.020

Finding Photon Fusion processes with a track veto — •Daniel Werner — DESY, Hamburg

Photon Fusion processes offer the possibility of studying QED production modes in the otherwise QCD dominated environment of the LHC. A key difference between the production of leptons via photo fusion or the Drell-Yan process is the presence of underlying events. To exploit this difference, a veto on any tracks near the primary vertex can be used.

This talk aims to introduce both photon fusion processes and the reconstruction of tracks in the ATLAS detector. A focus is put on tracks with a low transverse momentum that can boost the discrimination power of the veto. Reconstruction efficiencies are shown for low momentum tracks in Run 4.

Keywords: photon fusion; track veto; track reconstruction; low momentum tracks