Speaker
Description
The flux of cosmic neutrinos is measured with unprecedented accuracy, and on an extended wide energy, by different experiments. In order to accurately interpreted this data, precise predictions of the production processes, specifically the cross section for the production of neutrinos from the interaction of cosmic-ray protons and helium with atoms of the interstellar medium, are necessary. In this study, we determine new analytical functions describing the Lorentz-invariant cross section for neutrino production in hadronic collisions, spanning neutrino energy from 10 GeV to 10^7 GeV. We utilize the limited total cross section data for pions production, and supplement this information by drawing on our previous analyses on positron, electron and gamma-ray production to infer missing details. Our predictions include the cross sections for all production channels that contribute down to the 0.5% level of the final cross section.
