Nuclear matrix elements of neutrinoless double- β decay in the SD -pair shell model with expanded model space
Document Type
Article
Publication Date
2-1-2025
Abstract
To investigate the impact of the finite nucleon size effects (FNS) and the short-range correction (SRC) on the Fermi, Gamow-Teller, and tensor matrix elements of the neutrinoless double-beta (0νββ) decay, calculations are performed within the SD-pair shell model framework for Te128, Te130, and Xe134. The results reveal that both FNS and SRC effectively reduce the magnitude of each type of matrix element in the decay process. Furthermore, when the model space is expanded from the 50-82 shell to the 50-126 shell, the magnitudes of all matrix elements increase significantly, consistent with the findings of the shell model. Additionally, the suppressing effect of higher-order contributions appears to be independent of model space truncation.
Publication Source (Journal or Book title)
Physical Review C
Recommended Citation
Li, Z., Zhang, S., Xue, H., He, B., Luo, Y., Li, L., Pan, F., & Draayer, J. (2025). Nuclear matrix elements of neutrinoless double- β decay in the SD -pair shell model with expanded model space. Physical Review C, 111 (2) https://doi.org/10.1103/PhysRevC.111.024318