Cosmic ray event generator Sibyll 2.1

Abstract

The cosmic ray interaction event generator Sibyll is widely used in extensive air shower simulations. We describe in detail the properties of Sibyll 2.1 and the differences with the original version 1.7. The major structural improvements are the possibility to have multiple soft interactions, introduction of new parton density functions, and an improved treatment of diffraction. Sibyll 2.1 gives better agreement with fixed target and collider data, especially for the inelastic cross sections and multiplicities of secondary particles. Shortcomings and suggestions for future improvements are also discussed.

34 pages, 13 figures. Published version in PRD

References in corpus (4)

• One-dimensional Hybrid Approach to Extensive Air Shower Simulation
• New facts about muon production in Extended Air Shower simulations
• Inclusive production of charged pions in p+C collisions at 158 GeV/c beam momentum
• Unitarity Constraints on Semi-hard Jet Production in Impact Parameter Space

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