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SUMMARY:Status of 0$\\nu\\beta\\beta$ decay search in KamLAND-Zen800
DTSTART;VALUE=DATE-TIME:20210830T171500Z
DTEND;VALUE=DATE-TIME:20210830T173000Z
DTSTAMP;VALUE=DATE-TIME:20260611T104042Z
UID:indico-contribution-15707@indico.ific.uv.es
DESCRIPTION:Speakers: Atsuto Takeuchi (RCNS\, Tohoku University)\nThe Majo
 rana nature of neutrinos is the key to understand the matter-antimatter as
 ymmetry in our Universe. For now\, searching for the neutrino-less double 
 beta (0$\\nu\\beta\\beta$) decay is the only realistic way to proof that n
 eutrinos are Majorana particles.\nThe KamLAND-Zen experiment is 0$\\nu\\be
 ta\\beta$ decay search with $^{136}$Xe and ultra-low radioactive detector 
 KamLAND. Since 2019\, we have started the KamLAND-Zen800 Phase with 750 kg
  enriched xenon and are aiming to the first 0$\\nu\\beta\\beta$ decay sear
 ch in the inverted mass hierarchy. As the background rate is dramatically 
 reduced in Zen800 Phase\, evaluation of the new kind of background –xeno
 n spallation products– becomes important. \nIn this presentation\, we pr
 esent the up-to-date status of 0$\\nu\\beta\\beta$ analysis with KamLAND-Z
 en800\, especially focusing on the method of investigation  of xenon spall
 ation products and plan of near-future update.\n\nhttps://indico.ific.uv.e
 s/event/6178/contributions/15707/
LOCATION:
URL:https://indico.ific.uv.es/event/6178/contributions/15707/
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