Examination of the consistency of the quasiparticle random-phase approximation approach to double-beta decay of Ca-48
- NázevTitle
- Examination of the consistency of the quasiparticle random-phase approximation approach to double-beta decay of Ca-48Examination of the consistency of the quasiparticle random-phase approximation approach to double-beta decay of Ca-48
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- J. Terasaki
- Klíčová slovaKeywords
- Gamow-Teller strength, search, observables, continuum, NB-90
- DOIDOI
- 10.1103/PhysRevC.97.034304
- Časopis / citaceJournal / citation
- Physical Review C 97(3), 034304 (2018) · ISSN 2469-9985
- RokYear
- 2018
- JazykLanguage
- eng
- ZáznamyRecords
- ProjektProject
- Inženýrské aplikace fyziky mikrosvětaEngineering applications of microworld physics
- CitovánoCited by
- 16 (INSPIRE-HEP)
- Plný text (open access)Full text (open access)
- https://arxiv.org/pdf/1710.05572
- Citace ke staženíDownload citation
- TXT · BibTeX
AbstraktAbstract
The nuclear matrix elements (NMEs) of the neutrinoless and two-neutrino double-beta decays of Ca-48 are calculated by the quasiparticle random-phase approximation (QRPA) with emphasis on the consistency examinations of this calculation method. The main new examination points are the consistency of two ways to treat the intermediate-state energies in the two-neutrino double-beta NME and comparison with the experimental charge-exchange strength functions obtained from Ca-48(p,n) and Ti-48(n,p) reactions. No decisive problem preventing use of the QRPA approach is found. The obtained neutrinoless double-beta NME adjusted by the ratio of the effective and bare axial-vector current couplings is lowest in those calculated by different groups and close to one of the QRPA values obtained by another group.
The nuclear matrix elements (NMEs) of the neutrinoless and two-neutrino double-beta decays of Ca-48 are calculated by the quasiparticle random-phase approximation (QRPA) with emphasis on the consistency examinations of this calculation method. The main new examination points are the consistency of two ways to treat the intermediate-state energies in the two-neutrino double-beta NME and comparison with the experimental charge-exchange strength functions obtained from Ca-48(p,n) and Ti-48(n,p) reactions. No decisive problem preventing use of the QRPA approach is found. The obtained neutrinoless double-beta NME adjusted by the ratio of the effective and bare axial-vector current couplings is lowest in those calculated by different groups and close to one of the QRPA values obtained by another group.