Publications (15)
Search for supernova neutrinos and constraint on the galactic star formation rate with the KamLAND data
S. Abe, S. Asami, M. Eizuka +63
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 em…
Radiopurity of NaI(Tl) crystals for PICOLON dark matter experiment
K. Kotera, D. Chernyak, H. Ejiri +19
The dark matter observation claim by the DAMA/LIBRA collaboration has been a long-standing puzzle within the particle physics community. Efforts of other research groups to verify…
First measurement of the strange axial coupling constant using neutral-current quasielastic interactions of atmospheric neutrinos at KamLAND
KamLAND Collaboration, S. Abe, S. Asami +61
We report a measurement of the strange axial coupling constant using atmospheric neutrino data at KamLAND. This constant is a component of the axial form factor of the neut…
Search for Diffuse Supernova Neutrino Background in the Full KamLAND Dataset with Neural-Network-Based Event Classification
D. Chernyak, T. Eda, M. Eizuka +63
We report a search for the diffuse supernova neutrino background (DSNB) with the KamLAND detector, targeting electron antineutrinos via inverse beta decay in the neutrino energy ra…
Present status of PICOLON project
K. Fushimi, D. Chernyak, H. Ejiri +24
The existence of cosmic dark matter and neutrino properties are long-standing problems in cosmology and particle physics. These problems have been investigated by using radiation d…
PICOLON dark matter search project
K. Fushimi, D. Chernyak, H. Ejiri +21
PICOLON (Pure Inorganic Crystal Observatory for LOw-energy Neutr(al)ino) aims to search for cosmic dark matter by high purity NaI(Tl) scintillator. We developed extremely pure NaI(…
Abundances of uranium and thorium elements in Earth estimated by geoneutrino spectroscopy
S. Abe, S. Asami, M. Eizuka +64
The decay of the primordial isotopes , , , and have contributed to the terrestrial heat budget throughout t…
Search for Charged Excited States of Dark Matter with KamLAND-Zen
Zen collaboration, S. Abe, M. Eizuka +64
Particle dark matter could belong to a multiplet that includes an electrically charged state. WIMP dark matter () accompanied by a negatively charged excited state ($Ï^{-}…
Measurement of cosmic-ray muon spallation products in a xenon-loaded liquid scintillator with KamLAND
Zen Collaboration, S. Abe, S. Asami +63
Cosmic-ray muons produce various radioisotopes when passing through material. These spallation products can be backgrounds for rare event searches such as in solar neutrino, double…
Search for Majorana Neutrinos with the Complete KamLAND-Zen Dataset
S. Abe, T. Araki, K. Chiba +69
We present a search for neutrinoless double-beta () decay of Xe using the full \mbox{KamLAND-Zen 800} dataset with 745\,kg of enriched xenon, corresponding to an e…
Dark matter search with high purity NaI(Tl) scintillator
K. Fushimi, Y. Kanemitsu, K. Kotera +21
A dark matter search project needs and extremely low background radiation detector since the expected event rate of dark matter is less than a few events in one year in one tonne o…
KamLAND's search for correlated low-energy electron antineutrinos with astrophysical neutrinos from IceCube
S. Abe, S. Asami, M. Eizuka +66
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 publ…
Background stability and annual modulation test using PICOLON ultra-pure NaI(Tl) detector
PICOLON Collaboration, K. Kotera, D. Chernyak +20
The dark matter observation claimed by the DAMA/LIBRA experiment has been a long-standing puzzle within the particle physics community. NaI(Tl) crystals with radiopurity comparable…
Limits on the Low-Energy Electron Antineutrino Flux from the Brightest GRB of All Time
T. Araki, S. Chauhan, K. Chiba +69
The electron antinuetrino flux limits are presented for the brightest gamma-ray burst (GRB) of all time, GRB221009A, over a range of 1.8-200 MeV using the Kamioka Liquid Scintillat…
Search for the Majorana Nature of Neutrinos in the Inverted Mass Ordering Region with KamLAND-Zen
Zen Collaboration, S. Abe, S. Asami +70
The KamLAND-Zen experiment has provided stringent constraints on the neutrinoless double-beta () decay half-life in Xe using a xenon-loaded liquid scintillator. We…