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Predicting the neutrinoless double-β-decay matrix element of 136Xe using a statistical approach

Journal Article · · Physical Review. C
 [1];  [2];  [3]
  1. Central Michigan Univ., Mount Pleasant, MI (United States); OSTI
  2. International Center for Advanced Training and Research in Physics (CIFRA) (Romania); Horia Hulubei National Institute for Physics and Nuclear Engineering, Magurele (Romania)
  3. International Center for Advanced Training and Research in Physics (CIFRA) (Romania)

Calculation of the nuclear matrix elements (NMEs) for double-β decay is of paramount importance for guiding experiments and for analyzing and interpreting the experimental data, especially for the search of the neutrinoless double β decay mode (0v⁢ββ). However, there are currently still large differences between the NME values calculated by different methods, hence a quantification of their uncertainties is very much required. Here, in this paper, we propose a statistical analysis of 0⁢v⁢ββ NME for the 136Xe isotope, based on the interacting shell model, but using three independent effective Hamiltonians, emphasizing the range of the NMEs' most probable values and its correlations with observables that can be obtained from the existing nuclear data. Consequently, we propose a common probability distribution function for the 0⁢vββ NME, which has a range of (1.55–2.65) at 90% confidence level, with a mean value of 1.99 and a standard deviation of 0.37.

Research Organization:
Central Michigan Univ., Mount Pleasant, MI (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0022538
OSTI ID:
2422172
Journal Information:
Physical Review. C, Journal Name: Physical Review. C Journal Issue: 4 Vol. 107; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (5)