TL;DR
This paper reviews recent results from Super-Kamiokande and IceCube on atmospheric neutrinos, including measurements of the east-west effect and flux contributions, confirming the conventional decay spectrum and setting limits on charm decay contributions.
Contribution
It presents new measurements of atmospheric neutrino fluxes and effects, and compares experimental data with theoretical models, highlighting the absence of prompt charm decay contributions.
Findings
East-west effect measured at 8.0 sigma for electron neutrinos
Flux measurements consistent with pion and kaon decay models
Prompt charm decay contribution is consistent with zero
Abstract
This conference proceeding discusses new results arising from atmospheric neutrino detection in the Super-Kamiokande and IceCube experiments. Super-Kamiokande has measured atmospheric neutrinos in the energy range of 100 MeV-10 TeV and uses this data set to conclusively measure the east-west effect to 8.0 (6.0) for electron (muon) neutrinos. IceCube is ideal for measuring high energy atmospheric neutrinos and has explored how different production channels for atmospheric neutrinos contribute to the total overall observed flux. The measurement is consistent with the conventional spectrum, produced by the decay of pions and kaon, while the contribution from the prompt channel (due to charm decay) is consistent with zero.
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Neutrino Physics Research · Dark Matter and Cosmic Phenomena