2007/01/25 by Mihai Horoi, M. Horoi, S. Stoica +2 · 2 citations
Mathematics · Physics and Astronomy · #Algorithm #Atomic physics #Double beta decay #Excited state #Ground state #Mathematics #Neutrino #Neutrino Physics Research #Nuclear physics research studies #Particle physics #Particle physics theoretical and experimental studies #Physics #SHELL model #State (computer science) #nucl-th
paper · pdf · doi:10.1103/physrevc.75.034303
published as Phys.Rev.C75:034303,2007 · 6 pages, 4 figures
arxiv created 2007/01/25 · openalex publication_date 2007/03/13 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The two-neutrino double-\ensuremathβ decay matrix elements and half-lives of 48Ca were calculated within a shell-model approach for transitions to the ground state and to the 2+ first excited state of 48Ti. We use the full pf model space and the GXPF1A interaction, which was recently proposed to describe the spectroscopic properties of the nuclei in the nuclear mass region A=47--66. Our results are T1/2(0+\ensuremath→0+)=3.3\ifmmode×\else\texttimes\fi1019 yr and T1/2(0+\ensuremath→2+)=8.5\ifmmode×\else\texttimes\fi1023 yr. The result for the decay to the 48Ti 0+ ground state is in good agreement with experiment. The half-life for the decay to the 2+ state is two orders of magnitude larger than that obtained previously.