Double-Beta Decay of 48Ca within the STDA Method Based on Realistic Interaction with Density-Dependent Corrective Term

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F25%3A00647359" target="_blank" >RIV/61389005:_____/25:00647359 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21670/25:00387421
Result on the web
<a href="http://ntl.inrne.bas.bg/workshop/2025/contributions/NT42_p183_Vesely.pdf" target="_blank" >http://ntl.inrne.bas.bg/workshop/2025/contributions/NT42_p183_Vesely.pdf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Double-Beta Decay of 48Ca within the STDA Method Based on Realistic Interaction with Density-Dependent Corrective Term
Original language description
Weinvestigate nuclear matrix elements for two-neutrino double-beta decay of 48Causing the SecondTamm-Dancoffmethod. Thisapproachemploys a realistic chiral nucleon-nucleon interaction, known as NNLOopt, which is supplemented by phenomenological density-dependent terms that incorporate both isoscalar (T = 0) and isovector (T = 1) channels. We adjust the coupling constants for these channels to minimize the corresponding Fermi matrix element. This value is negligible compared to the Gamow-Teller nuclear matrix element, suggesting the restoration of isospin symmetry. Our calculations provide a foundation for a more detailed study, in which we will address the issue of quenching the weak coupling constant gA.
Czech name
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Czech description
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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

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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