Probing Pseudo-Dirac Neutrinos with Astrophysical Sources at IceCube

Kiara Carloni, Ivan Martínez-Soler, Carlos A. Argüelles, K. S. Babu, P. S. Bhupal Dev

Research output: Contribution to journalConference articlepeer-review

Abstract

The recent observation of NGC 1068 by the IceCube Neutrino Observatory has opened a new window to neutrino physics with astrophysical baselines. In this contribution, we show the results of a new method to probe the nature of neutrino masses using these observations. In particular, our method enables searching for signatures of pseudo-Dirac neutrinos with mass-squared differences that reach down to δm2 ≥ 1e − 21eV2, improving the reach of terrestrial experiments by more than a billion. Finally, we discuss how the discovery of a constellation of neutrino sources can further increase the sensitivity and cover a wider range of δm2 values.

Original languageEnglish
Article number1040
JournalProceedings of Science
Volume444
StatePublished - Sep 27 2024
Event38th International Cosmic Ray Conference, ICRC 2023 - Nagoya, Japan
Duration: Jul 26 2023Aug 3 2023

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