Speaker
Ralph Richard Engel
(KIT - Karlsruhe Institute of Technology (DE))
Description
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.
| Registration number following "ICRC2015-I/" | 975 |
|---|---|
| Collaboration | -- not specified -- |
Primary author
felix riehn
(KIT)
Co-authors
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)
