학술논문
KamLAND's search for correlated low-energy electron antineutrinos with astrophysical neutrinos from IceCube
Document Type
Working Paper
Author
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.; Fu, Z.; Ouellet, J.; Efremenko, Y.; Karwowski, H. J.; Markoff, D. M.; Tornow, W.; Li, A.; Detwiler, J. A.; Enomoto, S.; Decowski, M. P.; Grant, C.; Song, H.; O'Donnell, T.; Dell'Oro, S.
Source
Subject
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Abstract
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.
Comment: 12 pages, 5 figures
Comment: 12 pages, 5 figures