Ultrahigh-Energy Event KM3-230213A within the Global Neutrino Landscape

作者：О. Адриани, S. Aiello, A. Albert, A.R Alhebsi, M. Alshamsi, S. Alves Garre, Antonio Ambrosone, F. Ameli, M. André, L. Aphecetche, M. Ardid, S. Ardid, C. Argüelles, J. Aublin, F. Badaracco, L. Bailly-Salins, Z. Bardačová, B. Baret, A. Bariego-Quintana, Y. Becherini, M. Bendahman, Francesca Gualandi, M. Benhassi, Mohamed Bennani, David M. Benoit, E. Berbee, E. Berti, V. Bertin, P. Betti, S. Biagi, M Boettcher, D. Bonanno, S. Bottai, A. B. Bouasla, J. Boumaaza, M. Bouta, M. Bouwhuis, C. Bozza, R. M. Bozza, H. Brânzaş, F. Bretaudeau, M. Breuhaus, R. Bruijn, J. Brunner, Riccardo Bruno, E. Buis, R. Buompane, J. Busto, B. Caiffi, D. Calvo, A. Capone, F. Carenini, V. Carretero, T. Cartraud, Paolo Castaldi, V. Cecchini, S. Celli, L. Cerisy, M. Chabab, A. Chen, S Cherubini, T. Chiarusi, M. Circella, Rogan Clark, R. Cocimano, J. A. B. Coelho, A. Coleiro, A. Condorelli, R. Coniglione, P. Coyle, A. Creusot, G. Cuttone, R. Dallier, A. De Benedittis, G. de Wasseige, Valentin Decoene, P. Deguire, I. Del Rosso, L. S. Di Mauro, I. Di Palma, A. F. Díaz, D. Diego-Tortosa, C. Distefano, A. Domi, C. Donzaud, D. Dornic, E. Drakopoulou, D. Drouhin, J.-G. Ducoin, P. Duverne, R. Dvornický, T. Eberl, E. Eckerová, A. Eddymaoui, T. van Eeden, M. Eff, D. van Eijk, I. El Bojaddaini, S. El Hedri, Sharif El Mentawi, V. Ellajosyula, A. Enzenhöfer, G. Ferrara, M. D. Filipović, F. Filippini, D. Franciotti, L. Fusco, T. Gal, J. García Méndez, A. Garcia Soto, C. Gatius Oliver, N. Geißelbrecht, Eliot Genton, H. Ghaddari, L Gialanella, B. K. Gibson, E. Giorgio, I. Goos, P. Goswami, S. R. Gozzini, R. Gracía, C. Guidi, B. Guillon, M. Gutiérrez, Christian Haack, H. van Haren, A. Heijboer, Lars Hennig, J.J. Hernandez, A. Idrissi, W. Idrissi Ibnsalih, G. Illuminati, Oliver Janik, D. Joly, M. de Jong, P. de Jong, B. J. Jung, P. Kalaczyński, N. Kamp, J Keegans, V. Kikvadze, G. Kistauri, C. Kopper, A. Kouchner, Y. Y. Kovalev, Л. Крупа, V. Kueviakoe, V. Kulikovskiy, R. Kvatadze, M. Labalme, R. Lahmann, M. Lamoureux, G. Larosa, C. Lastoria, Jeffrey Lazar, A. Lazo, S. Le Stum, G. Lehaut, V. Lemaı̂tre, E. Leonora, N. Lessing, G. Levi, M. Lindsey Clark, F. Longhitano, Francesca Magnani, J. Majumdar, Lara Malerba, F. Mamedov, A. Manfreda, A. Manousakis, M. Marconi, A. Margiotta, A. Marinelli, C. Markou, L. Martin, M. Mastrodicasa, S. Mastroianni, Jonathan Mauro, K. Mehta, A. Meskar, G. Miele, P. Migliozzi, E. Migneco, M. L. Mitsou, C.M. Mollo, L. Morales-Gallegos, Naoto Mori, A. Moussa, I. Mozun Mateo, R. Muller, M. R. Musone, M. Musumeci, S. Navas, A. Nayerhoda, C. A. Nicolau, B. Nkosi, B. Ó Fearraigh, V. Oliviero, A. Orlando, E. Oukacha, L. Pacini, D. Paesani, J. Palacios González, G. Papalashvili, P. Papini, Valentina Parisi, A. Parmar, E.J. Pastor Gomez, C. Pastore, A. M. Păun, G. E. Păvălaş, S. Peña Martínez, M. Perrin-Terrin, V. Pestel, R. Pestes, M Petropavlova, P. Piattelli, A. V. Plavin, C. Poirè, V. Popa, T. Pradier, J. Prado, S. Pulvirenti, C.A Quiroz-Rangel, N. Randazzo, Ahmed Ratnani, S. Razzaque, I. C. Rea, D. Real, G. Riccobene, J. E. M. Robinson, A. Romanov, E. Ros, A. Šaina, F. Salesa Greus, D. F. E. Samtleben, A. Sánchez Losa, S. Sanfilippo, M. Sanguineti, D. Santonocito, P. Sapienza, M. Scaringella, Marco Scarnera, Jutta Schnabel, J. Schumann, H. M. Schutte, J. Seneca, N. Sennan, P. Sevle Myhr, I. Sgura, R. Shanidze, Ankur Sharma, Yu. Shitov, F. Šimkovic, A. Simonelli, A Sinopoulou, B. Spisso, M. Spurio, O. Starodubtsev, D. Stavropoulos, I. Štekl, D. Stocco, M. Taiuti, G. Takadze, Y. Tayalati, H. Thiersen, S. Thoudam, I. Tosta e Melo, B. Trocmé, V. Tsourapis, E. Tzamariudaki, A. Ukleja, A. Vacheret, V. Valsecchi, V. Van Elewyck, G. Vannoye, E. Vannuccini, G. Vasileiadis, F. Vazquez de Sola, A. Veutro, S. Viola, D. Vivolo, A. van Vliet, Alex Wen, E. de Wolf, I. Lhenry-Yvon, S. Zavatarelli, A. Zegarelli, Daniele Zito, J. D. Zornoza, J. Zúñiga, N. Zywucka · 发表于：Physical Review X · 年份：2025 · DOI：10.1103/yypk-zmb8 · 被引用次数：33 · 研究领域：Astrophysics and Cosmic Phenomena、Neutrino Physics Research、Particle physics theoretical and experimental studies

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 E 2 Φ ν + ν ¯ 1 f = 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 ( 1.6 σ – 2.9 σ ), and increased statistics are required to resolve this apparent tension and better characterize the neutrino landscape at ultrahigh energies.