TOHOKU UNIVERSITY Researchers

Research History 2

2024/09 - Present

Tohoku University　Research Center for Neutrino Science
2023/12 - 2024/08

Tohoku University　Research Center for Neutrino Science

Education 3

Tohoku University　Graduate School of Science　Department of Physics

2020/04 - 2023/11
Tohoku University　Graduate School of Science　Department of Physics

2018/04 - 2020/03
Tohoku University　Faculty of Science　Department of Physics

2014/04 - 2018/03

Professional Memberships 2

高エネルギー物理学研究者会議

2020/04 - Present
日本物理学会

2018/06 - Present

Research Interests 3

放射線検出器
ニュートリノ
二重ベータ崩壊

Research Areas 1

Natural sciences / Particle, nuclear, cosmic-ray, and astrophysics - experiment / Search for Neutrinoless double beta decays

Awards 1

優秀ポスター発表賞

2018/03　新学術領域「宇宙の歴史をひもとく地下素粒子原子核研究」：「極低放射能技術」研究会　KamLAND-Zen実験次期フェーズに向けた事象再構成方法の開発

Papers 13

Search for Majorana Neutrinos with the Complete KamLAND-Zen Dataset Peer-reviewed

S. Abe, T. Araki, K. Chiba, T. Eda, M. Eizuka, Y. Funahashi, A. Furuto, A. Gando, Y. Gando, S. Goto, T. Hachiya, K. Hata, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, A. Marthe, Y. Matsumoto, T. Mitsui, H. Miyake, D. Morita, R. Nakajima, K. Nakamura, R. Nakamura, R. Nakamura, J. Nakane, T. Ono, H. Ozaki, K. Saito, T. Sakai, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, K. Tachibana, K. Tamae, H. Watanabe, K. Watanabe, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, Z. Fu, S. Ghosh, J. Smolsky, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, S. Dell’Oro, T. O’Donnell, J. A. Detwiler, S. Enomoto, M. P. Decowski, K. M. Weerman, C. Grant, Ö. Penek, H. Song, A. Li, S. N. Axani, M. Garcia, M. Sarfraz

Physical Review Letters　135　(26)　2025/12/29
Publisher: American Physical Society (APS)
DOI： 10.1103/jkf6-48j8 　

ISSN： 0031-9007

eISSN： 1079-7114

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We present a search for neutrinoless double-beta ( 0 ν β β ) decay of Xe 136 using the full KamLAND-Zen 800 dataset with 745 kg of enriched xenon, corresponding to an exposure of 2.1 ton yr of Xe 136 . This updated search benefits from a more than twofold increase in exposure, recovery of photo-sensor gain, and reduced background from muon-induced spallation of xenon. Combining with the search in the previous KamLAND-Zen phase, we obtain a lower limit for the 0 ν β β decay halflife of T 1 / 2 0 ν > 3.8 × 10 26 yr at 90% CL, a factor of 1.7 improvement over the previous limit. The corresponding upper limits on the effective Majorana neutrino mass are in the range 28–122 meV using phenomenological nuclear matrix element calculations.
Search for charged excited states of dark matter with KamLAND-Zen Peer-reviewed

S. Abe, M. Eizuka, S. Futagi, A. Gando, Y. Gando, S. Goto, T. Hachiya, K. Hata, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, M. Kurasawa, T. Mitsui, H. Miyake, D. Morita, T. Nakahata, R. Nakajima, K. Nakamura, R. Nakamura, R. Nakamura, J. Nakane, H. Ozaki, T. Sakai, I. Shimizu, J. Shirai, K. Shiraishi, R. Shoji, A. Suzuki, A. Takeuchi, K. Tamae, H. Watanabe, K. Watanabe, S. Obara, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, A. Ichikawa, B.E. Berger, B.K. Fujikawa, J.G. Learned, J. Maricic, S.N. Axani, Z. Fu, J. Smolsky, L.A. Winslow, Y. Efremenko, H.J. Karwowski, D.M. Markoff, W. Tornow, S. Dell'Oro, T. O'Donnell, J.A. Detwiler, S. Enomoto, M.P. Decowski, K.M. Weerman, C. Grant, A. Li, H. Song

Physics Letters B　855　138846-138846　2024/08
Publisher: Elsevier BV
DOI： 10.1016/j.physletb.2024.138846 　

ISSN： 0370-2693
Measurement of cosmic-ray muon spallation products in a xenon-loaded liquid scintillator with KamLAND Peer-reviewed

S. Abe, S. Asami, M. Eizuka, S. Futagi, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, M. Kurasawa, T. Mitsui, H. Miyake, T. Nakahata, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, H. Watanabe, Y. Yoshida, S. Obara, A. K. Ichikawa, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, Z. Fu, J. Smolsky, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, S. Dell'Oro, T. O'Donnell, J. A. Detwiler, S. Enomoto, M. P. Decowski, K. M. Weerman, C. Grant, A. Li, H. Song

Physical Review C　107　(5)　2023/05/22
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevc.107.054612 　

ISSN： 2469-9985

eISSN： 2469-9993
First measurement of the strange axial coupling constant using neutral-current quasielastic interactions of atmospheric neutrinos at KamLAND Peer-reviewed

S. Abe, S. Asami, M. Eizuka, S. Futagi, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, M. Kurasawa, T. Mitsui, H. Miyake, T. Nakahata, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, H. Watanabe, Y. Yoshida, S. Obara, A. K. Ichikawa, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, Z. Fu, J. Smolsky, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, A. Li, H. Song, S. Dell’Oro, T. O’Donnell

Physical Review D　107　(7)　2023/04/19
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevd.107.072006 　

ISSN： 2470-0010

eISSN： 2470-0029
Search for the Majorana Nature of Neutrinos in the Inverted Mass Ordering Region with KamLAND-Zen Peer-reviewed

S. Abe, S. Asami, M. Eizuka, S. Futagi, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, S. Hayashida, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, M. Kurasawa, N. Maemura, T. Mitsui, H. Miyake, T. Nakahata, K. Nakamura, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, K. Ueshima, H. Watanabe, Y. Yoshida, S. Obara, A. K. Ichikawa, D. Chernyak, A. Kozlov, K. Z. Nakamura, S. Yoshida, Y. Takemoto, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, J. Smolsky, Z. Fu, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, S. Dell’Oro, T. O’Donnell, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, A. Li, H. Song

Physical Review Letters　130　(5)　2023/01/30
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevlett.130.051801 　

ISSN： 0031-9007

eISSN： 1079-7114
KamLAND’s search for correlated low-energy electron antineutrinos with astrophysical neutrinos from IceCube Peer-reviewed

S. Abe, S. Asami, M. Eizuka, S. Futagi, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, T. Kinoshita, M. Koga, M. Kurasawa, N. Maemura, T. Mitsui, H. Miyake, T. Nakahata, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, H. Watanabe, Y. Yoshida, S. Obara, A.K. Ichikawa, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, B.E. Berger, B.K. Fujikawa, J.G. Learned, J. Maricic, S.N. Axani, J. Smolsky, J. Lertprasertpong, L.A. Winslow, Z. Fu, J. Ouellet, Y. Efremenko, H.J. Karwowski, D.M. Markoff, W. Tornow, A. Li, J.A. Detwiler, S. Enomoto, M.P. Decowski, C. Grant, H. Song, T. O’Donnell, S. Dell’Oro

Astroparticle Physics　143　102758-102758　2022/10
Publisher: Elsevier BV
DOI： 10.1016/j.astropartphys.2022.102758 　

ISSN： 0927-6505
Abundances of Uranium and Thorium Elements in Earth Estimated by Geoneutrino Spectroscopy

S. Abe, S. Asami, M. Eizuka, S. Futagi, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, M. Kurasawa, N. Maemura, T. Mitsui, H. Miyake, T. Nakahata, K. Nakamura, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, Y. Shirahata, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, H. Watanabe, Y. Yoshida, S. Obara, A. K. Ichikawa, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, Z. Fu, J. Smolsky, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, A. Li, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, H. Song, T. O’Donnell, S. Dell’Oro

Geophysical Research Letters　49　(16)　2022/08/16
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2022gl099566 　

ISSN： 0094-8276

eISSN： 1944-8007

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Abstract The decay of the primordial isotopes ²³⁸U, ²³⁵U, ²³²Th, and ⁴⁰K has contributed to the terrestrial heat budget throughout the Earth's history. Hence, the individual abundance of those isotopes are key parameters in reconstructing contemporary Earth models. The geoneutrinos produced by the radioactive decays of uranium and thorium have been observed with the Kamioka Liquid‐Scintillator Antineutrino Detector (KamLAND). Those measurements have been improved with more than 18‐year observation time, and improvement in detector background levels mainly with an 8‐year nearly reactor‐free period, which now permit spectroscopy with geoneutrinos. Our results yield the first constraint on both uranium and thorium heat contributions. The KamLAND result is consistent with geochemical estimations based on elemental abundances of chondritic meteorites and mantle peridotites. The High‐Q model is disfavored at 99.76% C.L. and a fully radiogenic model is excluded at 5.2σ assuming a homogeneous heat producing element distribution in the mantle.
Search for Supernova Neutrinos and Constraint on the Galactic Star Formation Rate with the KamLAND Data

S. Abe, S. Asami, M. Eizuka, S. Futagi, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, M. Kurasawa, N. Maemura, T. Mitsui, H. Miyake, T. Nakahata, K. Nakamura, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, H. Watanabe, Y. Yoshida, S. Obara, A. Ichikawa, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, L. A. Winslow, Z. Fu, J. Smolsky, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, A. Li, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, H. Song, T. O’Donnell, S. Dell’Oro

The Astrophysical Journal　934　(1)　85-85　2022/07/01
Publisher: American Astronomical Society
DOI： 10.3847/1538-4357/ac7a3f 　

ISSN： 0004-637X

eISSN： 1538-4357

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Abstract We present the results of a search for core-collapse supernova neutrinos, using long-term KamLAND data from 2002 March 9 to 2020 April 25. We focus on the electron antineutrinos emitted from supernovae in the energy range of 1.8–111 MeV. Supernovae will make a neutrino event cluster with the duration of ∼10 s in the KamLAND data. We find no neutrino clusters and give the upper limit on the supernova rate to be 0.15 yr⁻¹ with a 90% confidence level. The detectable range, which corresponds to a >95% detection probability, is 40–59 kpc and 65–81 kpc for core-collapse supernovae and failed core-collapse supernovae, respectively. This paper proposes to convert the supernova rate obtained by the neutrino observation to the Galactic star formation rate. Assuming a modified Salpeter-type initial mass function, the upper limit on the Galactic star formation rate is <(17.5–22.7) M _⊙ yr⁻¹ with a 90% confidence level.
A Search for Correlated Low-energy Electron Antineutrinos in KamLAND with Gamma-Ray Bursts

S. Abe, S. Asami, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, T. Kinoshita, M. Koga, N. Maemura, T. Mitsui, H. Miyake, K. Nakamura, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, M. Eizuka, M. Kurasawa, T. Nakahata, S. Futagi, H. Watanabe, Y. Yoshida, S. Obara, A. K. Ichikawa, S. Yoshida, S. Umehara, K. Fushimi, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, J. Smolsky, C. Laber-Smith, L. A. Winslow, Z. Fu, J. Ouellet, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, A. Li, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, H. Song, T. O’Donnell, S. Dell’Oro

The Astrophysical Journal　927　(1)　69-69　2022/03/01
Publisher: American Astronomical Society
DOI： 10.3847/1538-4357/ac4e7e 　

ISSN： 0004-637X

eISSN： 1538-4357

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Abstract We present the results of a time-coincident event search for low-energy electron antineutrinos in the KamLAND detector with gamma-ray bursts (GRBs) from the Gamma-ray Coordinates Network and Fermi Gamma-ray Burst Monitor. Using a variable coincidence time window of ±500 s plus the duration of each GRB, no statistically significant excess above the background is observed. We place the world’s most stringent 90% confidence level upper limit on the electron antineutrino fluence below 17.5 MeV. Assuming a Fermi–Dirac neutrino energy spectrum from the GRB source, we use the available redshift data to constrain the electron antineutrino luminosity and effective temperature.
Limits on Astrophysical Antineutrinos with the KamLAND Experiment

S. Abe, S. Asami, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, S. Hayashida, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, T. Kinoshita, M. Koga, N. Maemura, T. Mitsui, H. Miyake, K. Nakamura, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, Y. Shirahata, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, K. Ueshima, Y. Wada, H. Watanabe, Y. Yoshida, S. Obara, A. K. Ichikawa, A. Kozlov, D. Chernyak, Y. Takemoto, S. Yoshida, S. Umehara, K. Fushimi, S. Hirata, K. Z. Nakamura, M. Yoshida, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, L. A. Winslow, Z. Fu, J. Ouellet, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, A. Li, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, T. O’Donnell, S. Dell’Oro

The Astrophysical Journal　925　(1)　14-14　2022/01/01
Publisher: American Astronomical Society
DOI： 10.3847/1538-4357/ac32c1 　

ISSN： 0004-637X

eISSN： 1538-4357

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Abstract We report on a search for electron antineutrinos ( ) from astrophysical sources in the neutrino energy range 8.3–30.8 MeV with the KamLAND detector. In an exposure of 6.72 kton-year of the liquid scintillator, we observe 18 candidate events via the inverse beta decay reaction. Although there is a large background uncertainty from neutral current atmospheric neutrino interactions, we find no significant excess over background model predictions. Assuming several supernova relic neutrino spectra, we give upper flux limits of 60–110 cm⁻² s⁻¹ (90% confidence level, CL) in the analysis range and present a model-independent flux. We also set limits on the annihilation rates for light dark matter pairs to neutrino pairs. These data improve on the upper probability limit of ⁸B solar neutrinos converting into , (90% CL) assuming an undistorted shape. This corresponds to a solar flux of 60 cm⁻² s⁻¹ (90% CL) in the analysis energy range.
Search for Solar Flare Neutrinos with the KamLAND Detector

S. Abe, S. Asami, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, S. Hayashida, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, T. Kinoshita, M. Koga, N. Maemura, T. Mitsui, H. Miyake, K. Nakamura, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, K. Ueshima, Y. Wada, H. Watanabe, Y. Yoshida, S. Obara, A. K. Ichikawa, A. Kozlov, D. Chernyak, Y. Takemoto, S. Yoshida, S. Umehara, K. Fushimi, K. Z. Nakamura, M. Yoshida, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, L. A. Winslow, Z. Fu, J. Ouellet, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, A. Li, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, T. O’Donnell, S. Dell’Oro

The Astrophysical Journal　924　(2)　103-103　2022/01/01
Publisher: American Astronomical Society
DOI： 10.3847/1538-4357/ac35d1 　

ISSN： 0004-637X

eISSN： 1538-4357

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Abstract We report the result of a search for neutrinos in coincidence with solar flares from the GOES flare database. The search was performed on a 10.8 kton-year exposure of KamLAND collected from 2002 to 2019. This large exposure allows us to explore previously unconstrained parameter space for solar flare neutrinos. We found no statistical excess of neutrinos and established 90% confidence level upper limits of 8.4 × 10⁷ cm⁻² (3.0 × 10⁹ cm⁻²) on the electron antineutrino (electron neutrino) fluence at 20 MeV normalized to the X12 flare, assuming that the neutrino fluence is proportional to the X-ray intensity.
Low-energy astrophysics with KamLAND

Nanami Kawada, Shuhei Obara, Koji Ishidoshiro, Seisho Abe, Sachihiro Asami, Azusa Gando, Yoshihito Gando, Tomomi Gima, Anna Goto, Takahiko Hachiya, Kazumi Hata, Shingo Hayashida, Keishi Hosokawa, Koichi Ichimura, Sei Ieki, Haruo Ikeda, Kunio Inoue, Yuto Kamei, Yasuhiro Kishimoto, Tatsuya Kinoshita, Masayuki Koga, Naoya Maemura, Tadao Mitsui, Haruhiko Miyake, Kengo Nakamura, Kosuke Nakamura, Rikuo Nakamura, Hideyoshi Ozaki, Taichi Sakai, Hiroto Sambonsugi, Itaru Shimizu, Junpei Shirai, Kensuke Shiraishi, Atsuto SUZUKI, Yuya Suzuki, Atsuto Takeuchi, Kyoko Tamae, Kota Ueshima, Yoshiki Wada, Hiroko Watanabe, Yuki Yoshida, Atsuko Ichikawa, Alexandre Kozlov, Dmitry CHERNYAK, Yasuhiro Takemoto, Sei Yoshida, Saori Umehara, Ken-Ichi Fushimi, Kazuhiro Nakamura, Masashi Yoshida, Bruce Edmond Berger, Brian Kurt Fujikawa, John Gregory Learned, Jelena Maricic, Spencer N. Axani, Lindley Anne Winslow, Zhenghao Fu, Jonathan Ouellet, Yuri Efremenko, Hugon J. Karwowski, Dian M. Markoff, Werner Tornow, Aobo Li, Jason A. Detwiler, Sanshiro Enomoto, Patric Decowski, Chistopher Grant, Thomas O'Donnell, Stefano Dell'Oro

Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)　1163-1163　2021/07/29
Publisher: Sissa Medialab
DOI： 10.22323/1.395.1163 　
Search for Low-energy Electron Antineutrinos in KamLAND Associated with Gravitational Wave Events

S. Abe, S. Asami, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, S. Hayashida, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, T. Kinoshita, M. Koga, N. Maemura, T. Mitsui, H. Miyake, K. Nakamura, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, K. Ueshima, Y. Wada, H. Watanabe, Y. Yoshida, S. Obara, A. Kozlov, D. Chernyak, Y. Takemoto, S. Yoshida, S. Umehara, K. Fushimi, A. K. Ichikawa, K. Z. Nakamura, M. Yoshida, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, L. A. Winslow, Z. Fu, J. Ouellet, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, A. Li, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, T. O’Donnell, S. Dell’Oro

The Astrophysical Journal　909　(2)　116-116　2021/03/01
Publisher: American Astronomical Society
DOI： 10.3847/1538-4357/abd5bc 　

ISSN： 0004-637X

eISSN： 1538-4357

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Abstract We present the results of a search for MeV-scale electron antineutrino events in KamLAND coincident with the 60 gravitational wave events/candidates reported by the LIGO/Virgo collaboration during their second and third observing runs. We find no significant coincident signals within a ±500 s timing window from each gravitational wave and present 90% C.L. upper limits on the electron antineutrino fluence between 10⁸ and 10¹³ cm⁻² for neutrino energies in the energy range of 1.8–111 MeV.

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Presentations 1

Latest Result and Future Prospects of KamLAND-Zen Invited

Haruhiko Miyake

XeSAT 2026 - International Workshop on Applications of Noble Gas Xenon to Science and Technology

Research Projects 1

液面監視技術を基盤とする大型液体シンチレーター検出器の超低バックグラウンド化

三宅春彦

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 若手研究

Institution: 東北大学

2026/04/01 - 2028/03/31

Social Activities 2

KamLAND一般公開見学会

2025/07/12 - 2025/07/13
ひだ宇宙科学館カミオカラボ研究者トーク

2025/05/18 -