Publications (9)
Results from KamLAND-Zen
Zen Collaboration
KamLAND-Zen reports on a preliminary search for neutrinoless double-beta decay with ^{136}Xe based on 114.8 live-days after the purification of the xenon loaded liquid scintillator…
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 im…
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…
Limits on Majoron-emitting double-beta decays of Xe-136 in the KamLAND-Zen experiment
Zen Collaboration, A. Gando, Y. Gando +37
We present limits on Majoron-emitting neutrinoless double-beta decay modes based on an exposure of 112.3 days with 125 kg of Xe-136. In particular, a lower limit on the ordinary (s…
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 scintilla…
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…
Measurement of the double-βdecay half-life of ^{136}Xe with the KamLAND-Zen experiment
Zen Collaboration
We present results from the KamLAND-Zen double-beta decay experiment based on an exposure of 77.6 days with 129 kg of Xe. The measured two-neutrino double-beta decay half-l…
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…
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…