Hadronic interactions models beyond collider energies

Details Hadronic interactions models beyond collider energies Hadronic interactions models beyond collider energies

1998-10-16

arxiv.org/abs/hep-ph/9810384v1

Phys.Rev. D59 (1999) 094003

Physics

High Energy Physics

High Energy Physics - Phenomenology

31 RevTex pages - 14 ps figures

Scientific paper

10.1103/PhysRevD.59.094003

Studies of the influence of different hadronic models on extensive air showers at ultra-high energies are presented. The hadronic models considered are those implemented in the well-known QGSJET and SIBYLL event generators. The different approaches used in both codes to model the underlying physics is analyzed using computer simulations performed with the program AIRES. The most relevant observables for both single collisions and air showers are studied for primary energies ranging from $10^{14}$ eV up to $10^{20.5}$ eV. In addition, the evolution of lateral and energy distributions during the shower development is presented. Our analysis seems to indicate that the behaviour of shower observables does not largely reflect the strong differences observed in single collisions.

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