The cosmic ray flux and its chemical composition - Latest Results from IceCube and a New View on Experimental Data
by
Hans Dembinski(Max-Planck-Institute for Nuclear Physics)
→
Portugal
Description
The IceCube Neutrino Observatory is also a versatile cosmic ray detector with the unique capability of measuring separately the GeV and TeV muon component in air showers. The surface array of IceCube, IceTop, is large and dense enough to cover a wide range of cosmic-ray energies from PeV to EeV. I will summarise recent measurements of the cosmic-ray flux and mass composition done with IceCube, as well as new preliminary measurements of the GeV and TeV muon component. In the second part of the talk, I will show a new data-driven model of the cosmic-ray flux and mass composition, which combines for the first time data from several experiments into a single consistent model that takes both statistical and systematic uncertainties of the experiments into account. The most important systematic uncertainty, the varying energy scales from experiment to experiment, is handled explicitly in the analysis. A new common energy scale is established and correction factors are derived for each experiment.
