Göttingen 2025 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 10: Neutrino Astronomy I

T 10.5: Vortrag

Montag, 31. März 2025, 17:45–18:00, VG 1.105

Determination of Systematic Uncertainties in Air Shower Production — •Celina Kortmann — Technische Universität Dortmund

In experimental astrophysics, physical quantities are estimated from measurements using various reconstruction techniques. The physical results can have large systematic uncertainties depending on the properties of the detectors, the analysis, and its underlying assumptions.

Our goal is to quantify and understand the systematic uncertainties associated with predictions based on Monte Carlo simulations in air shower physics. This study is of particular interest for neutrino experiments such as IceCube, whose background consists of atmospheric neutrinos and muons, and IACTs such as MAGIC, whose background contains protons and heavier nuclei, inducing air showers with a pattern similar to gamma rays. In the past, measurements of the atmospheric muon and muon-neutrino flux and of the proton flux have been made.

Using CORSIKA, a program for Monte Carlo simulations of air showers, we compare the fluxes resulting from the same showers to estimate the correlation between the muonic and electromagnetic components of air showers. The current state of the analysis is presented.

Keywords: systematic uncertainties; CORSIKA; IceCube; MAGIC; atmospheric neutrinos