On February 13th, 2023, the KM3NeT/ARCA telescope detected a neutrino candidate with an estimated energy in the hundreds of PeVs. We review the observation of this ultra-high-energy neutrino in light of observations above tens of PeV from the IceCube and Pierre Auger observatories. Furthermore, we discuss how the ultra-high-energy data were 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. Finally, we present the prospects that may lead to resolving this apparent discrepancy and better characterise the neutrino landscape at ultra-high energies.

Model-agnostic interpretation of the first KM3NeT Ultra-High-Energy event within the Global Neutrino Landscape / Bouasla A.B., Attallah R., Adriani O., Albert A., Alhebsi A.R., Alshalloudi S., Alshamsi M., Alves Garre S., Ameli F., Andre M., Aphecetche L., Ardid M., Ardid S., Aublin J., Badaracco F., Bailly-Salins L., Baret B., Bariego-Quintana A., Barnard M., Becherini Y., et al.. - In: POS PROCEEDINGS OF SCIENCE. - ISSN 1824-8039. - ELETTRONICO. - 501:(2025), pp. 0-0. (39th International Cosmic Ray Conference, ICRC 2025 che 2025) [10.22323/1.501.1117].

Model-agnostic interpretation of the first KM3NeT Ultra-High-Energy event within the Global Neutrino Landscape

Adriani O.;Biagi S.;Bottai S.;Cecchini V.;Celli S.;Distefano C.;Langella A.;Markou C.;Muller R.;Musumeci M.;Pacini L.;Parmar A.;Sanfilippo S.;Scaringella M.;Simonelli A.;Starodubtsev O.;Valsecchi V.;Vannuccini E.;Viola S.;
2025

Abstract

On February 13th, 2023, the KM3NeT/ARCA telescope detected a neutrino candidate with an estimated energy in the hundreds of PeVs. We review the observation of this ultra-high-energy neutrino in light of observations above tens of PeV from the IceCube and Pierre Auger observatories. Furthermore, we discuss how the ultra-high-energy data were 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. Finally, we present the prospects that may lead to resolving this apparent discrepancy and better characterise the neutrino landscape at ultra-high energies.
2025
Proceedings of Science
39th International Cosmic Ray Conference, ICRC 2025
che
2025
Bouasla A.B.; Attallah R.; Adriani O.; Albert A.; Alhebsi A.R.; Alshalloudi S.; Alshamsi M.; Alves Garre S.; Ameli F.; Andre M.; Aphecetche L.; Ardid ...espandi
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1500366
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
social impact