Dortmund 2021 – scientific programme
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T: Fachverband Teilchenphysik
T 12: Search for New Particles I
T 12.7: Talk
Monday, March 15, 2021, 17:35–17:50, Tl
Searching for ALPs in light-by-light scattering in pp collisions using AFP proton tagging with the ATLAS detector — Peter Bussey1, •Tomaš Chobola2, Petr Dostál2, Hussain Kitagawa3, Artem Kravchenko2, Patrick Odagiu4, André Sopczak2, Junichi Tanaka5, Gen Tateno5, and Koji Terashi5 — 1University of Glasgow — 2CTU in Prague — 3Okayama University — 4EPF Lausanne — 5ICEPP University of Tokyo
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 away from the interaction point near the beam pipe and is used to measure the kinematics of surviving protons. The high-mass diphoton spectrum is studied to search for an ALP mediated by light-by-light scattering. The investigated mass range is between 0.1 TeV and 2 TeV ALP with a typical coupling g = 1 TeV−1. Data containing photon information and AFP containers are prepared. A blinding strategy is established, along with the next steps in this search.