activity
20022023
most citedFirst Results from KamLAND: Evidence for Reactor Anti-Neutrino Disappearance

2.7k citations · 6.5k across the 31 of their papers we have counts for

collaborators

31 papers

hep-ex2023

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…

hep-ex2022★ 15 cited

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…

physics.geo-ph2022★ 27 cited

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…

astro-ph.HE2022★ 6 cited

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…

hep-ex2022★ 243 cited

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 re…

astro-ph.HE2022★ 1 cited

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…

astro-ph.HE2022★ 4 cited

A search for correlated low-energy electron antineutrinos in KamLAND with gamma-ray bursts

S. Abe, S. Asami, A. Gando +64

We present the results of a time-coincident event search for low-energy electron antineutrinos in the KamLAND detector with gamma-ray bursts from the Gamma-ray Coordinates Network…

astro-ph.HE2021★ 44 cited

Limits on astrophysical antineutrinos with the KamLAND experiment

S. Abe, S. Asami, A. Gando +66

We report on a search for electron antineutrinos () from astrophysical sources in the neutrino energy range 8.3 to 30.8 MeV with the KamLAND detector. In an exposure of 6.…

astro-ph.SR2021

Search for Solar Flare Neutrinos with the KamLAND detector

S. Abe, S. Asami, A. Gando +65

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 colle…

physics.ins-det2021★ 18 cited

The nylon balloon for xenon loaded liquid scintillator in KamLAND-Zen 800 neutrinoless double-beta decay search experiment

Zen collaboration, Y. Gando, A. Gando +70

The KamLAND-Zen 800 experiment is searching for the neutrinoless double-beta decay of Xe by using Xe-loaded liquid scintillator. The liquid scintillator is enclosed…

hep-ex2021★ 1 cited

A Search for Charged Excitation of Dark Matter with the KamLAND-Zen Detector

S. Abe, S. Asami, A. Gando +68

There are many theories where a dark matter particle is part of a multiplet with an electrically charged state. If WIMP dark matter () is accompanied by a charged excited st…

astro-ph.HE2020★ 19 cited

Search for Low-energy Electron Antineutrinos in KamLAND Associated with Gravitational Wave Events

S. Abe, S. Asami, A. Gando +65

We present the results of a search for MeV-scale electron antineutrino events in KamLAND in coincident with the 60 gravitational wave events/candidates reported by the LIGO/Virgo c…

hep-ex2019★ 73 cited

Precision Analysis of the Xe Two-Neutrino Spectrum in KamLAND-Zen and Its Impact on the Quenching of Nuclear Matrix Elements

Zen Collaboration

We present a precision analysis of the Xe two-neutrino electron spectrum above 0.8 MeV, based on high-statistics data obtained with the KamLAND-Zen experiment. An impr…

hep-ex2016★ 980 cited

Search for Majorana Neutrinos near the Inverted Mass Hierarchy Region with KamLAND-Zen

Zen Collaboration

We present an improved search for neutrinoless double-beta () decay of Xe in the KamLAND-Zen experiment. Owing to purification of the xenon-loaded liquid scintillator…

hep-ex2015★ 38 cited

Search for double-beta decay of 136Xe to excited states of 136Ba with the KamLAND-Zen experiment

Zen Collaboration, K. Asakura, A. Gando +42

A search for double-beta decays of 136Xe to excited states of 136Ba has been performed with the first phase data set of the KamLAND-Zen experiment. The 0+1, 2+1 and 2+2 transitions…

astro-ph.HE2015★ 66 cited

KamLAND Sensitivity to Neutrinos from Pre-Supernova Stars

K. Asakura, A. Gando, Y. Gando +44

In the late stages of nuclear burning for massive stars ($M>8~M_{\sun}$), the production of neutrino-antineutrino pairs through various processes becomes the dominant stellar cooli…

hep-ex2015★ 19 cited

Search for the proton decay mode with KamLAND

KamLAND Collaboration

We present a search for the proton decay mode based on an exposure of 8.97 kton-years in the KamLAND experiment. The liquid scintillator detector i…

astro-ph.HE2015★ 11 cited

Study of electron anti-neutrinos associated with gamma-ray bursts using KamLAND

K. Asakura, A. Gando, Y. Gando +45

We search for electron anti-neutrinos () from long and short-duration gamma-ray bursts~(GRBs) using data taken by the KamLAND detector from August 2002 to June 2013.…

physics.ins-det2014★ 14 cited

A compact ultra-clean system for deploying radioactive sources inside the KamLAND detector

T. I. Banks, S. J. Freedman, J. Wallig +54

We describe a compact, ultra-clean device used to deploy radioactive sources along the vertical axis of the KamLAND liquid-scintillator neutrino detector for purposes of calibratio…

hep-ex2014★ 74 cited

7Be Solar Neutrino Measurement with KamLAND

A. Gando, Y. Gando, H. Hanakago +68

We report a measurement of the neutrino-electron elastic scattering rate of 862 keV 7Be solar neutrinos based on a 165.4 kton-day exposure of KamLAND. The observed rate is 582 +/-…

physics.ins-det2013★ 2 cited

Laboratory Studies on the Removal of Radon-Born Lead from KamLAND's Organic Liquid Scintillator

G. Keefer, C. Grant, A. Piepke +64

The removal of radioactivity from liquid scintillator has been studied in preparation of a low background phase of KamLAND. This paper describes the methods and techniques develope…

physics.ins-det2013★ 11 cited

CeLAND: search for a 4th light neutrino state with a 3 PBq 144Ce-144Pr electron antineutrino generator in KamLAND

A. Gando, Y. Gando, S. Hayashida +63

The reactor neutrino and gallium anomalies can be tested with a 3-4 PBq (75-100 kCi scale) 144Ce-144Pr antineutrino beta-source deployed at the center or next to a large low-backgr…

hep-ex2013★ 3 cited

White paper: CeLAND - Investigation of the reactor antineutrino anomaly with an intense 144Ce-144Pr antineutrino source in KamLAND

A. Gando, Y. Gando, S. Hayashida +57

We propose to test for short baseline neutrino oscillations, implied by the recent reevaluation of the reactor antineutrino flux and by anomalous results from the gallium solar neu…

hep-ex2012★ 410 cited

Limit on Neutrinoless ββ Decay of Xe-136 from the First Phase of KamLAND-Zen and Comparison with the Positive Claim in Ge-76

Zen Collaboration

We present results from the first phase of the KamLAND-Zen double-beta decay experiment, corresponding to an exposure of 89.5 kg yr of Xe-136. We obtain a lower limit for the neutr…