KamLAND's search for correlated low-energy electron antineutrinos with astrophysical neutrinos from IceCube

We report the results of a search for MeV-scale astrophysical neutrinos in KamLAND presented as an excess in the number of coincident neutrino interactions associated with the publicly available high-energy neutrino datasets from the IceCube Neutrino Observatory. We find no statistically significant...

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Bibliographic Details
Published in:arXiv.org 2022-07
Main Authors: Abe, S, Asami, S, Eizuka, M, Futagi, S, Gando, A, Gando, Y, Gima, T, Goto, A, Hachiya, T, Hata, K, Hosokawa, K, Ichimura, K, Ieki, S, Ikeda, H, Inoue, K, Ishidoshiro, K, Kamei, Y, Kawada, N, Kishimoto, Y, Kinoshita, T, Koga, M, Kurasawa, M, Maemura, N, Mitsui, T, Miyake, H, Nakahata, T, Nakamura, K, Nakamura, R, Ozaki, H, Sakai, T, Sambonsugi, H, Shimizu, I, Shirai, J, Shiraishi, K, Suzuki, A, Suzuki, Y, Takeuchi, A, Tamae, K, Watanabe, H, Yoshida, Y, Obara, S, Ichikawa, A K, Yoshida, S, Umehara, S, Fushimi, K, Kotera, K, Urano, Y, Berger, B E, Fujikawa, B K, Learned, J G, Maricic, J, Axani, S N, Smolsky, J, Lertprasertpong, J, Winslow, L A, Z Fu, Ouellet, J, Efremenko, Y, Karwowski, H J, Markoff, D M, Tornow, W, A Li, Detwiler, J A, Enomoto, S, Decowski, M P, Grant, C, Song, H, O'Donnell, T, Dell'Oro, S
Format: Article
Language:English
Subjects:
Antineutrinos
Confidence intervals
Electrons
Fluence
Luminosity
Neutrinos
Windows (intervals)
Online Access:Get full text
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Summary:We report the results of a search for MeV-scale astrophysical neutrinos in KamLAND presented as an excess in the number of coincident neutrino interactions associated with the publicly available high-energy neutrino datasets from the IceCube Neutrino Observatory. We find no statistically significant excess in the number of observed low-energy electron antineutrinos in KamLAND, given a coincidence time window of \(\pm\)500s, \(\pm\)1,000s, \(\pm\)3,600s, and \(\pm\)10,000s around each of the IceCube neutrinos. We use this observation to present limits from 1.8 MeV to 100 MeV on the electron antineutrino fluence, assuming a mono-energetic flux. We then compare the results to several astrophysical measurements performed by IceCube and place a limit at the 90% confidence level on the electron antineutrino isotropic thermal luminosity from the TXS 0506+056 blazar.
ISSN:2331-8422
DOI:10.48550/arxiv.2202.07345