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SUMMARY:Recent results of the KamLAND-Zen experiment
DTSTART;VALUE=DATE-TIME:20220714T120000Z
DTEND;VALUE=DATE-TIME:20220714T122000Z
DTSTAMP;VALUE=DATE-TIME:20260608T113707Z
UID:indico-contribution-511@events.sinp.msu.ru
DESCRIPTION:Speakers: Alexandre Kozlov (MEPhI)\nThe KamLAND-Zen experiment
  provided new stringent constraints on the neutrinoless double-beta (0νβ
 β) decay half-life in Xe-136 using a xenon-loaded liquid scintillator.  I
 mproved search was based on an upgraded detector with almost double the am
 ount of enriched xenon and an ultra-low radioactivity container\, correspo
 nding to an exposure of 970 kg yr of Xe-136. This new data provides valuab
 le insight into backgrounds\, especially from cosmic muon spallation of xe
 non\, and has required the use of novel background rejection techniques. W
 e obtained a lower limit for the 0νββ decay half-life of T1/2 > 2.3 × 
 10^26 yr at 90% C.L.\, corresponding to upper limits on the effective Majo
 rana neutrino mass of 36 – 156 meV using commonly adopted nuclear matrix
  element calculations.\n\nhttps://events.sinp.msu.ru/event/8/contributions
 /511/
LOCATION: Физический ф-т\, 5-42
URL:https://events.sinp.msu.ru/event/8/contributions/511/
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