Air shower simulation and hadronic interactions
1 New York University, 4 Washington Place, New York, NY, USA
2 Osservatorio Astrofisico di Torino (INAF), Università di Torino and Sezione INFN, Torino, Italy
3 Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
4 RISE, Waseda University, Tokyo, Japan
5 Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy, Yakutsk, Russia
6 High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
7 Solar-Terrestrial Environment Laboratory, Nagoya University, Japan
8 NTNU, Institutt for fysikk, 7491 Trondheim, Norway
The aim of this report of the Working Group on Hadronic Interactions and Air Shower Simulation is to give an overview of the status of the field, emphasizing open questions and a comparison of relevant results of the different experiments. It is shown that an approximate overall understanding of extensive air showers and the corresponding hadronic interactions has been reached. The simulations provide a qualitative description of the bulk of the air shower observables. Discrepancies are however found when the correlation between measurements of the longitudinal shower profile are compared to that of the lateral particle distributions at ground. The report concludes with a list of important problems that should be addressed to make progress in understanding hadronic interactions and, hence, improve the reliability of air shower simulations.
© Owned by the authors, published by EDP Sciences, 2013
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