Astrophysical neutrino production and impact of associated uncertainties in photo-hadronic interactions of UHECRs
| Autor: | Biehl, Daniel, Boncioli, Denise, Fedynitch, Anatoli, Morejon, Leonel, Winter, Walter |
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| Rok vydání: | 2018 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1051/epjconf/201920804002 |
| Popis: | High energy neutrinos can be produced by interactions of ultra-high energy cosmic rays (UHECRs) in the dense radiation fields of their sources as well as off the cosmic backgrounds when they propagate through the universe. Multi-messenger interpretations of current measurements deeply rely on the understanding of these interactions. In order to efficiently produce neutrinos in the sources of UHECRs, at least a moderate level of interactions is needed, which means that a nuclear cascade develops if nuclei are involved. On the other hand, the available cross-section data and interaction models turn out to make poor predictions for most nuclei heavier than protons. We show the impact of these uncertainties in state-of-the-art photo-disintegration models and motivate nuclear cross-section measurements. Further, we discuss extensions for photo-meson models currently used in astrophysics and demonstrate the importance of understanding the details of UHECR interaction with the Glashow resonance. Comment: invited talk presented at ISVHECRI 2018, submitted for publication to EPJ Web of Conferences |
| Databáze: | arXiv |
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