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Karlsruhe 2024 – scientific programme

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T: Fachverband Teilchenphysik

T 83: Cosmic rays 6

T 83.6: Talk

Thursday, March 7, 2024, 17:15–17:30, Geb. 20.30: 2.059

Studying effects of Lorentz violation in the photon sector using extensive air shower simulations — •Nico Spornhauer, Fabian Duenkel, Marcus Niechciol, and Markus Risse — Center for Particle Physics Siegen, Experimentelle Astroteilchenphysik, Universität Siegen

Ultra-high-energy cosmic rays induce extensive air showers involving secondary particles, which can exceed the energies reached by today’s accelerators. The effects of isotropic, non-birefringent Lorentz violation in the photon sector can be studied at these high energies. Using the 1-dimensional air shower simulation program CONEX, bounds on the studied Lorentz violation were set based on the significant reduction of the average atmospheric depth of the shower maximum ⟨ Xmax⟩ and its shower-to-shower fluctuations σ(Xmax). We implemented modifications achieving Lorentz violation into the 3-dimensional air shower simulation program CORSIKA. The aim is an improved search for Lorentz violation by including observables unavailable to a 1-dimensional simulation such as those connected to the lateral particle distribution. We present preliminary results for the 3-dimensional shower simulations.

This work is supported by the Deutsche Forschungsgemeinschaft (DFG).

Keywords: Lorentz Violation

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