Volume 42 Issue 10
Oct.  2016
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XIAO Yang, GENG Lisheng. Phenomenological study of double-beta decay half-lives[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(10): 2238-2242. doi: 10.13700/j.bh.1001-5965.2015.0604(in Chinese)
Citation: XIAO Yang, GENG Lisheng. Phenomenological study of double-beta decay half-lives[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(10): 2238-2242. doi: 10.13700/j.bh.1001-5965.2015.0604(in Chinese)

Phenomenological study of double-beta decay half-lives

doi: 10.13700/j.bh.1001-5965.2015.0604
Funds:  National Natural Science Foundation of China (11375024); the Fundamental Research Funds for the Central Universities (YWF-15-WLXY-001)
  • Received Date: 16 Sep 2015
  • Publish Date: 20 Oct 2016
  • In order to study the physical interpretation of a phenomenological formula which can well describe the available experimental data and connects double-beta decay half-lives and decay energy, a convincible explanation for the source of the inverse relationship between the logarithm of the double-beta decay half-life and the decay energy in the phenomenological formula is proposed based on the analyses of double-beta decay phasespace factor. In addition, based on shell model theory, a slight modification to the phenomenological formula is proposed, which can further improve the description of the experimental data. The results indicate that double-beta decay phasespace factor is the source of the inverse relationship between the logarithm of the double-beta decay half-life and the decay energy in the phenomenological formula. By using the new formula, the average deviation between theoretical and experimental values of the logarithms of the double-beta decay half-lives reduces from 0.486 to 0.408.

     

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