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Seasonal variations of the atmospheric muon neutrino spectrum measured with IceCube

IceCube Collaboration; Abbasi, R.; Ackermann, M.; Adams, J.; Agarwalla, S. K.; Aguilar, J. A.; Ahlers, M.; Alameddine, J. M.; Amin, N. M.; Andeen, K.; Argüelles, C.; Ashida, Y.; Yáñez, Juan Pablo; Athanasiadou, S.; Axani, S. N.; Babu, R.; Bai, X.; Balagopal V., A.; Baricevic, M.; ... mehr

Abstract (englisch):

This study presents an analysis of seasonal variations in the atmospheric muon neutrino flux, using 11.3 years of data from the IceCube Neutrino Observatory. By leveraging a novel spectral unfolding method, we explore the energy range from 125 GeV to 10 TeV for zenith angles from 90° to 110°, corresponding to the Antarctic atmosphere. Our findings reveal that the differential measurement of the amplitudes of the seasonal variation is consistent with an energy-dependent decrease reaching (-4,5 ± 1.2)% during Austral winter and increase to (+3.9 ± 1.3)% during Austral summer relative to the annual average at 10 TeV. While the unfolded flux exceeds the model predictions by up to 30%, the differential measurement of the seasonal to annual average flux remains unaffected. The measured seasonal variations of the muon neutrino spectrum are consistent with theoretical predictions using the MCEq code and the NRLMSISE-00 atmospheric model.


Verlagsausgabe §
DOI: 10.5445/IR/1000189263
Veröffentlicht am 23.12.2025
Originalveröffentlichung
DOI: 10.1140/epjc/s10052-025-14844-0
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Astroteilchenphysik (IAP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2025
Sprache Englisch
Identifikator ISSN: 1434-6044, 1434-6052
KITopen-ID: 1000189263
Erschienen in The European Physical Journal C
Verlag Springer-Verlag
Band 85
Heft 12
Seiten 1368
Vorab online veröffentlicht am 01.12.2025
Schlagwörter Atmospheric Optics, Atmospheric Science, Climate Sciences, Environmental Physics, Meteorology, Particle Physics
Nachgewiesen in Scopus
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