Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2009-06-02
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
Submitted to the 31th ICRC, Lodz, Poland, 2009
Scientific paper
We study the dependence of extensive air shower development on the first hadronic interactions at ultra-high energies occurring in the startup phase of the air shower cascade. The interpretation of standard air shower observables depends on the characteristics of these interactions. Thus, it is currently difficult to draw firm conclusions for example on the primary cosmic ray mass composition from the analysis of air shower data. On the other hand, a known primary mass composition would allow us to study hadronic interactions at center of mass energies well above the range that is accessible to accelerators measurements.
Engel R. R.
Müller Steffen
Pierog Tanguy
Schüssler Fabian
Ulrich Ralf
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