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T: Fachverband Teilchenphysik

T 54: Axion like particles I

T 54.10: Vortrag

Mittwoch, 1. April 2020, 18:45–19:00, H-HS XV

Searching for ALPs in light-by-light scattering in pp collisions using AFP proton tagging with the ATLAS detector — •Patrick Odagiu¹ and André Sopczak² — ¹EPFL Lausanne — ²IEAP CTU in Prague

The search for an Axion-Like-Particle (ALP) is being performed using about 20 fb⁻¹ data recorded with the ATLAS experiment and the ATLAS Forward Proton (AFP) detector in 2017. The AFP detector is positioned symmetrically at approximately 220 m about the interaction point near the beam pipe and is used to measure the kinematics of surviving protons. The high-mass diphoton spectrum is studied for the search for an ALP mediated by light-by-light scattering. At the current stage of the analysis, the focus is on a 1 TeV ALP with coupling g = 0.001 GeV⁻¹. Data containing photon information and AFP containers were prepared. The blinding strategy was established, along with the next steps in this search.