Double Beta Decays of<sup>116</sup>Cd

  • Ejiri Hiroyasu
    Department of Physics and Laboratory for Nuclear Studies, Osaka University, Toyonaka 560
  • Fushimi Ken–ichi
    Department of Physics and Laboratory for Nuclear Studies, Osaka University, Toyonaka 560
  • Hazama Ryuta
    Department of Physics and Laboratory for Nuclear Studies, Osaka University, Toyonaka 560
  • Kawasaki Michio
    Department of Physics and Laboratory for Nuclear Studies, Osaka University, Toyonaka 560
  • Koutsu Vasiliy
    Institute for Nuclear Research, Kiev, Prospect Nauki, 47 Kiev 252028, Ukraine
  • Kudomi Nobuyuki
    Department of Physics and Laboratory for Nuclear Studies, Osaka University, Toyonaka 560
  • Kume Kyo
    Department of Physics and Laboratory for Nuclear Studies, Osaka University, Toyonaka 560
  • Nagata Koichiro
    Department of Physics and Laboratory for Nuclear Studies, Osaka University, Toyonaka 560
  • Ohsumi Hideaki
    Department of Physics and Laboratory for Nuclear Studies, Osaka University, Toyonaka 560
  • Okada Kenji
    Department of Physics and Laboratory for Nuclear Studies, Osaka University, Toyonaka 560
  • Sano Hirokazu
    Department of Physics and Laboratory for Nuclear Studies, Osaka University, Toyonaka 560
  • Senoo Toshio
    Department of Physics and Laboratory for Nuclear Studies, Osaka University, Toyonaka 560
  • Shibata Tokushi
    Department of Physics and Laboratory for Nuclear Studies, Osaka University, Toyonaka 560
  • Shima Tatsushi
    Department of Physics and Laboratory for Nuclear Studies, Osaka University, Toyonaka 560
  • Tanaka Jun–ichi
    Department of Physics and Laboratory for Nuclear Studies, Osaka University, Toyonaka 560
  • Zesenko Yuri
    Institute for Nuclear Research, Kiev, Prospect Nauki, 47 Kiev 252028, Ukraine

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タイトル別名
  • Double Beta Decays of 116Cd.

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抄録

Double beta decays (β β ) from the 0+ ground state in 116Cd to the 0+ ground state in 116Sn were studied by means of ELEGANT V. A finite half-life for the two-neutrino ββ (2νββ ) and an upper limit on the neutrinoless one (0νββ) were obtained as T1/2=2.6+0.9-0.5× 1019, y and T1/2>6.3× 1021, y (68\The nuclear matrix element Mββ was deduced as 0.069± 0.009 in units of (mec2)-1. This supports the universal quenching of the 2νββ rates in this mass region, which is consistent with that previously measured in 100Mo.

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