Szczegóły publikacji
Opis bibliograficzny
Ultrahigh-energy event KM3-230213A within the global neutrino landscape / O. Adriani, [et al.], P. KALACZYŃSKI, [et al.], K. C. K. MEHTA, [et al.], A. UKLEJA, [et al.] // Physical Review . X [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 2160-3308. — 2025 — vol. 15 iss. 3 art. no. 031016, s. 031016-1–031016-13. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 031016-11–031016-13, Abstr. — Publikacja dostępna online od: 2025-07-15. — P. Kalaczyński - dod. afiliacja: AstroCeNT, Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Warsaw, Poland. — A. Ukleja - dod. afiliacja: National Centre for Nuclear Research, Warsaw, Poland
Autorzy (292)
Dane bibliometryczne
| ID BaDAP | 162052 |
|---|---|
| Data dodania do BaDAP | 2025-09-09 |
| Tekst źródłowy | URL |
| DOI | 10.1103/yypk-zmb8 |
| Rok publikacji | 2025 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physical Review, X |
Abstract
On February 13th, 2023, the KM3NeT/ARCA telescope detected a neutrino candidate with an estimated energy in the hundreds of PeV. In this article, the observation of this ultrahigh-energy neutrino is discussed in light of null observations above tens of PeV from the IceCube and Pierre Auger observatories. Performing a joint fit of all experiments under the assumption of an isotropic 𝐸−2 flux, the best-fit single-flavor flux normalization is 𝐸2Φ1f𝜈+¯𝜈=7.5×10−10 GeV cm−2 s−1 sr−1 in the 90% energy range of the KM3NeT event. Furthermore, the ultrahigh-energy data are then fit together with the IceCube measurements at lower energies, either with a single power law or with a broken power law, allowing for the presence of a new component in the spectrum. A slight preference for a break in the PeV regime is found for one of the three investigated IceCube samples and no such preference for the other two. In all cases, the observed tension between KM3NeT and other datasets is mild to moderate (1.6𝜎–2.9𝜎), and increased statistics are required to resolve this apparent tension and better characterize the neutrino landscape at ultrahigh energies.
