QGSM-based prompt muon calculations match IceCube spectra above 500 TeV, while lower charm-production models require extra flux from rare decays of eta, eta', rho, omega, and phi mesons.
Calculation of conventional and prompt lepton fluxes at very high energy
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abstract
An efficient method for calculating inclusive conventional and prompt atmospheric leptons fluxes is presented. The coupled cascade equations are solved numerically by formulating them as matrix equation. The presented approach is very flexible and allows the use of different hadronic interaction models, realistic parametrizations of the primary cosmic-ray flux and the Earth's atmosphere, and a detailed treatment of particle interactions and decays. The power of the developed method is illustrated by calculating lepton flux predictions for a number of different scenarios.
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High-energy atmospheric muon flux calculations in comparison with recent measurements
QGSM-based prompt muon calculations match IceCube spectra above 500 TeV, while lower charm-production models require extra flux from rare decays of eta, eta', rho, omega, and phi mesons.