2-9 July 2014
Valencia, Spain
Europe/Madrid timezone

Latest results from KamLAND-Zen second phase

3 Jul 2014, 11:30
Auditorium 3B ()

Auditorium 3B

Oral presentation Neutrino Physics Neutrino Physics


Dr. Yoshihito Gando (Research Center for Neutrino Science, Tohoku Univ.)


KamLAND-Zen is an experiment for neutrinoless double beta decay search with xenon 136 based on large liquid scintillator detector KamLAND. The first phase of the experiment was operated from Oct. 12, 2011 to June 14, 2012 and we set lower limit for the neutrino-less double beta decay half-life , T1/2(0nu) > 1.9*10^{25} yr. The combined result of KamLAND-Zen and EXO data give T1/2(0nu) > 3.4*10^{25} yr. At the first phase, we found problematic background, 110mAg. Then we purified liquid scintillator and xenon gas by distillation to remove the background. The purification campaign was started just after the first phase and ended at Dec. 2013. We present the progress of background rejection, current status and latest results from KamLAND-Zen second phase.

Primary author

Dr. Yoshihito Gando (Research Center for Neutrino Science, Tohoku Univ.)

Presentation Materials


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