Oct 8 – 12, 2018
Ecole Supérieure de Chimie, Paris
Europe/Paris timezone

Report on tests and measurements of hadronic interaction properties with air showers

Oct 11, 2018, 10:10 AM
25m
Friedel Amphitheater (Ecole Supérieure de Chimie, Paris)

Friedel Amphitheater

Ecole Supérieure de Chimie, Paris

Chimie ParisTech École Nationale Supérieure de Chimie de Paris 11, rue Pierre et Marie Curie 75231 PARIS Cedex 05
INVITED Sessions

Speaker

Hans Dembinski (Max Planck Institute for Nuclear Physics, Heidelberg)

Description

Unambiguously determining the mass composition of ultra-high energy cosmic rays is a key challenge at the frontier of cosmic ray research. The mass composition is inferred from air shower observables using air shower simulations, which rely on hadronic interaction models. Current hadronic interaction models lead to varying interpretations, therefore tests of hadronic interaction models with air shower measurements are important. Such tests may even reveal new physics phenomena. Tests have been done by various experiments and cover the cosmic ray energies from PeV to tens of EeV. In this talk, the Working Group on Hadronic interactions and Shower Physics presents a summary of tests and measurements related to hadronic interactions in air showers from the Pierre Auger Observatory, Telescope Array, IceCube, KASCADE-Grande, EAS MSU, SUGAR and NEVOD-DECOR. Results include measurements of the proton-air cross-section, the lateral density profile of muons in air showers as well as electrons and photons, TeV muons, and the muon production depth. Our goal is to develop a consistent picture out of the individual measurements, to gain a detailed understanding where current hadronic interaction models succeed or fail in describing air shower observables.

Primary author

Hans Dembinski (Max Planck Institute for Nuclear Physics, Heidelberg)

Presentation materials