July 29, 2015 to August 6, 2015
World Forum
Europe/Amsterdam timezone

A new version of the event generator Sibyll

Jul 30, 2015, 3:30 PM
Amazon Foyer (World Forum)

Amazon Foyer

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Board: 203
Poster contribution CR-TH Poster 1 CR


Ralph Richard Engel (KIT - Karlsruhe Institute of Technology (DE))


The event generator Sibyll can be used for the simulation of hadronic multiparticle production up to the highest cosmic ray energies. It is optimized for providing an economic description of those aspects of the expected hadronic final states that are needed for the calculation of air showers and atmospheric lepton fluxes. New measurements from fixed target and collider experiments, in particular those at LHC, allow us to test the predictive power of the model version 2.1, which was released more than 10 years ago, and also to identify shortcomings. Based on a detailed comparison of the model predictions with the new data we revisit model assumptions and approximations to obtain an improved version of the interaction model. In addition a phenomenological model for the production of charm particles is implemented as needed for the calculation of prompt lepton fluxes in the energy range of the astrophysical neutrinos recently discovered by IceCube. After giving an overview of the new ideas implemented in Sibyll and discussing how they lead to an improved description of accelerator data, predictions for air showers and atmospheric lepton fluxes are presented.
Collaboration -- not specified --
Registration number following "ICRC2015-I/" 975

Primary author


Anatoli Fedynitch (KIT - Karlsruhe Institute of Technology (DE)) Ralph Richard Engel (KIT - Karlsruhe Institute of Technology (DE)) Thomas Gaisser (University of Delaware) Todor Stanev (University of Delaware)

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