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SUMMARY:Search for neutrinoless double beta decay with the KamLAND-Zen exp
 eriment
DTSTART;VALUE=DATE-TIME:20181024T063000Z
DTEND;VALUE=DATE-TIME:20181024T064500Z
DTSTAMP;VALUE=DATE-TIME:20260305T204825Z
UID:indico-contribution-1225@cern.ch
DESCRIPTION:Speakers: Dmitry Chernyak (Kavli Institute for the Physics and
  Mathematics of the Universe\, The University of Tokyo)\nNeutrinoless doub
 le beta decay is a hypothetical nuclear transition which if observed will 
 allow to establish Majorana nature of neutrino\, determine the absolute ne
 utrino mass and the neutrino-mass hierarchy\, to verify the lepton number 
 violation and possible contribution of right-handed admixture to weak inte
 raction\, help to test leptogenesis\, existence of Nambu-Goldstone bosons 
 (majorons) and other effects beyond the Standard Model.\n\nThe KamLAND-Zen
  experiment is searching for neutrinoless double beta decay of Xe-136 by u
 sing xenon-loaded liquid scintillator inside the KamLAND detector. The exp
 eriment is located in the Kamioka underground laboratory (Hida\, Japan) at
  the depth of approximately 1000 m.\n\nThe previous phase of the experimen
 t called KamLAND-Zen 400 used 13 tons of Xe-loaded liquid scintillator con
 tained in a 3.08-m-diameter spherical inner balloon placed at the center o
 f the KamLAND detector. The amount of the enriched xenon gas was almost 40
 0 kg. The KamLAND-Zen 400 experiment was finished at the end of 2015 with 
 the upper limits on the effective Majorana neutrino mass are in the range 
 of 61–165 meV.\n\nStatus of the current phase of the experiment called K
 amLAND-Zen 800 will be reported. The amount of enriched Xe during this pha
 se will be increased up to ~750 kg. The production and installation of a n
 ew 3.84-m-diameter mini-balloon will be shown. The expected sensitivity on
  the effective Majorana neutrino mass will be discussed.\n\nProgress on R&
 D for the next phase of the experiment – KamLAND2-Zen – will be also p
 resented.\n\nhttps://indico.particle.mephi.ru/event/22/contributions/1225/
LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy hall
URL:https://indico.particle.mephi.ru/event/22/contributions/1225/
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