Olena Tkachenko (Author), Andrej Filipčič (Author), J. P. Lundquist (Author), S. U. Shivashankara (Author), Samo Stanič (Author), Serguei Vorobiov (Author), Danilo Zavrtanik (Author), Marko Zavrtanik (Author)

Abstract

The depth of the maximum of an air shower development, Xmax, as observed with fluorescence telescopes, is among the most sensitive observables for studying the interaction characteristics and primary composition of ultra-high-energy cosmic rays. However, precise measurement of the interaction cross section remains challenging, as standard analyses often rely on assumptions about the composition, which are closely tied to the validity of specific hadronic interaction models. In this work, we discuss a method for the simultaneous estimation of the proton-proton interaction cross section and primary mass composition, addressing the limitations of separate measurements. The inclusion of the Xmax scale into the fit further accounts for systematic uncertainties in the data and theoretical uncertainties in particle production. The performance of the method is evaluated using simulations that include detector responses under realistic conditions and with a particular focus on assessing the systematic uncertainties of the fit.

Keywords

ultra-high-energy cosmic rays;Pierre Auger Observatory;extensive air showers;air shower maximum depth;

Data

Language: English
Year of publishing:
Typology: 1.08 - Published Scientific Conference Contribution
Organization: UNG - University of Nova Gorica
UDC: 52
COBISS: 230629123 Link will open in a new window
ISSN: 1824-8039
Views: 374
Downloads: 8
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Other data

Pages: 8 str.
DOI: 10.22323/1.484.0036
ID: 26125303