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arxiv: 2502.12070 · v2 · pith:5AA2YABMnew · submitted 2025-02-17 · 🌌 astro-ph.HE

KM3NeT Constraint on Lorentz-Violating Superluminal Neutrino Velocity

KM3NeT Collaboration: O. Adriani , S. Aiello , A. Albert , A. R. Alhebsi , M. Alshamsi , S. Alves Garre , A. Ambrosone , F. Ameli
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M. Andre L. Aphecetche M. Ardid S. Ardid C. Arg\"uelles J. Aublin F. Badaracco L. Bailly-Salins Z. Barda\v{c}ov\'a A. Bariego-Quintana Y. Becherini M. Bendahman F. Benfenati Gualandi M. Benhassi M. Bennani D. 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. Br\^anza\c{s} F. Bretaudeau M. Breuhaus R. Bruijn J. Brunner R. Bruno E. Buis R. Buompane J. Busto B. Caiffi D. Calvo A. Capone F. Carenini V. Carretero T. Cartraud P. Castaldi V. Cecchini S. Celli L. Cerisy M. Chabab A. Chen S. Cherubini T. Chiarusi M. Circella R. 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 V. Decoene P. Deguire I. Del Rosso L. S. Di Mauro I. Di Palma A. F. D\'iaz D. Diego-Tortosa C. Distefano A. Domi C. Donzaud D. Dornic E. Drakopoulou D. Drouhin J.-G. Ducoin P. Duverne R. Dvornick\'y T. Eberl E. Eckerov\'a A. Eddymaoui T. van Eeden M. Eff D. van Eijk I. El Bojaddaini S. El Hedri S. El Mentawi V. Ellajosyula A. Enzenh\"ofer G. Ferrara M. D. Filipovi\'c F. Filippini D. Franciotti L. A. Fusco S. Gagliardini T. Gal J. Garc\'ia M\'endez A. Garcia Soto C. Gatius Oliver N. Gei{\ss}elbrecht E. Genton H. Ghaddari L. Gialanella B. K. Gibson E. Giorgio I. Goos P. Goswami S. R. Gozzini R. Gracia C. Guidi B. Guillon M. Guti\'errez C. Haack H. van Haren A. Heijboer L. Hennig J. J. Hern\'andez-Rey A. Idrissi W. Idrissi Ibnsalih G. Illuminati O. Janik D. Joly M. de Jong P. de Jong B. J. Jung P. Kalaczy\'nski N. Kamp J. Keegans V. Kikvadze G. Kistauri C. Kopper A. Kouchner Y. Y. Kovalev L. Krupa V. Kueviakoe V. Kulikovskiy R. Kvatadze M. Labalme R. Lahmann M. Lamoureux G. Larosa C. Lastoria J. Lazar A. Lazo S. Le Stum G. Lehaut V. Lema\^itre E. Leonora N. Lessing G. Levi M. Lindsey Clark F. Longhitano F. Magnani J. Majumdar L. Malerba F. Mamedov A. Manfreda A. Manousakis M. Marconi A. Margiotta A. Marinelli C. Markou L. Martin M. Mastrodicasa S. Mastroianni J. Mauro K. C. K. Mehta A. Meskar G. Miele P. Migliozzi E. Migneco M. L. Mitsou C. M. Mollo L. Morales-Gallegos N. Mori A. Moussa I. Mozun Mateo R. Muller M. R. Musone M. Musumeci S. Navas A. Nayerhoda C. A. Nicolau B. Nkosi B. \'O Fearraigh V. Oliviero A. Orlando E. Oukacha L. Pacini D. Paesani J. Palacios Gonz\'alez G. Papalashvili P. Papini V. Parisi A. Parmar E.J. Pastor Gomez C. Pastore A. M. P\u{a}un G. E. P\u{a}v\u{a}la\c{s} S. Pe\~na Mart\'inez M. Perrin-Terrin V. Pestel R. Pestes M. Petropavlova P. Piattelli A. Plavin C. Poir\`e V. Popa T. Pradier J. Prado S. Pulvirenti C.A. Quiroz-Rangel N. Randazzo A. Ratnani S. Razzaque I. C. Rea D. Real G. Riccobene J. Robinson A. Romanov E. Ros A. \v{S}aina F. Salesa Greus D. F. E. Samtleben A. S\'anchez Losa S. Sanfilippo M. Sanguineti D. Santonocito P. Sapienza M. Scaringella M. Scarnera J. Schnabel J. Schumann H. M. Schutte J. Seneca N. Sennan P. A. Sevle Myhr I. Sgura R. Shanidze A. Sharma Y. Shitov F. \v{S}imkovic A. Simonelli A. Sinopoulou B. Spisso M. Spurio O. Starodubtsev D. Stavropoulos I. \v{S}tekl D. Stocco M. Taiuti G. Takadze Y. Tayalati H. Thiersen S. Thoudam I. Tosta e Melo B. Trocm\'e 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 A. Y. Wen E. de Wolf I. Lhenry-Yvon S. Zavatarelli A. Zegarelli D. Zito J. D. Zornoza J. Z\'u\~niga N. Zywucka
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keywords constraintenergyinvariancelightneutrinospacetimespeedarrival
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Lorentz invariance is a fundamental symmetry of spacetime and foundational to modern physics. One of its most important consequences is the constancy of the speed of light. This invariance, together with the geometry of spacetime, implies that no particle can move faster than the speed of light. In this article, we present the most stringent neutrino-based test of this prediction, using the highest energy neutrino ever detected to date, KM3-230213A. The arrival of this event, with an energy of $220^{+570}_{-110}\,\text{PeV}$, sets a constraint on $\delta \equiv c_\nu^2-1 < 4\times10^{-22}$.

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