Double-beta Decay of 48Ca within Second Tamm-Dancoff Approximation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F25%3A00619659" target="_blank" >RIV/61389005:_____/25:00619659 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21670/25:00383637 RIV/00216208:11320/25:10508880
Result on the web
<a href="http://dx.doi.org/10.5506/APhysPolBSupp.18.2-A9" target="_blank" >http://dx.doi.org/10.5506/APhysPolBSupp.18.2-A9</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.5506/APhysPolBSupp.18.2-A9" target="_blank" >10.5506/APhysPolBSupp.18.2-A9</a>
Alternative languages
Result language
angličtina
Original language name
Double-beta Decay of 48Ca within Second Tamm-Dancoff Approximation
Original language description
The neutrinoless double-beta decay (0νββ) nuclear matrix elements (NMEs) cannot be directly deduced from any experimental data, and their reliable calculation remains a significant challenge for the nuclear physics community. Advanced nuclear structure approaches have been developed and applied to evaluate nuclear transitions of experimental interest. However, the calculated values of 0νββ NMEs still vary widely among different methods, affecting predictions of decay rates and constraints on various lepton violation parameters. The two-neutrino double-beta (2νββ) decay, which has been experimentally confirmed for eleven isotopes, plays a crucial role in testing nuclear structure models. In this context, we present the modified formalism of the Second Tamm–Dancoff Approximation (STDA) for the calculation of double-beta decay transitions. For 2νββ of 48Ca, the corresponding NMEs are calculated within the STDA, and their dependence on relevant nuclear structure parameters is investigated. Our findings indicate that a significant quenching of the axial-vector coupling constant is necessary to accurately reproduce the half-life of 2νββ decay.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Acta Physica Polonica B - Proceedings Supplement
ISBN
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ISSN
1899-2358
e-ISSN
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Number of pages
8
Pages from-to
A9
Publisher name
Faculty of Physics, Astronomy and Applied Computer Science
Place of publication
Krakow
Event location
Zakopane
Event date
Aug 25, 2024
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
001476673100015