The KM3NeT ultra-high-energy event

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F25%3A00389274" target="_blank" >RIV/68407700:21670/25:00389274 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.22323/1.501.1018" target="_blank" >https://doi.org/10.22323/1.501.1018</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.22323/1.501.1018" target="_blank" >10.22323/1.501.1018</a>

Result language
angličtina
Original language name
The KM3NeT ultra-high-energy event
Original language description
A neutrino event of exceptional energy, in the hundreds of PeV regime, was detected with the KM3NeT-ARCA detector. At the time of the detection, on February 13, 2023, the ARCA detector consisted of 21 detection lines, about 10% of the total volume of the full planned detector. This ultra-high-energy event lies in an unexplored energy range where cosmic neutrinos have been predicted but never observed until now. The KM3NeT Collaboration has considered several hypotheses regarding the possible origin of this event, though no clear indication has been found yet. In this contribution, the details of the event energy and direction reconstruction, together with the investigated hypotheses on its nature, will be reported.
Czech name
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Czech description
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Project
<a href="/en/project/LM2023063" target="_blank" >LM2023063: Laboratoire Souterrain de Modane – participation of the Czech Republic</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
39th International Cosmic Ray Conference (ICRC2025)
ISBN
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ISSN
1824-8039
e-ISSN
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Number of pages
11
Pages from-to
1-11
Publisher name
PoS - Proceedings of Science, Sissa Medialab srl
Place of publication
Trieste
Event location
Geneva
Event date
Jul 14, 2025
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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