Half-life of 136Xe for neutrinoless double-β decay calculated with effective axial-vector current coupling unified for two-neutrino and neutrinoless double-β decay modes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F25%3A00386203" target="_blank" >RIV/68407700:21670/25:00386203 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/t2mf-c4yc" target="_blank" >https://doi.org/10.1103/t2mf-c4yc</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/t2mf-c4yc" target="_blank" >10.1103/t2mf-c4yc</a>
Alternative languages
Result language
angličtina
Original language name
Half-life of 136Xe for neutrinoless double-β decay calculated with effective axial-vector current coupling unified for two-neutrino and neutrinoless double-β decay modes
Original language description
The upper limit on the mass of the Majorana neutrino, extracted from the limits on the nonobservation of the neutrinoless double-β (0νββ) decay, is hampered by uncertainties in the matrix elements of the transition operators. Recently, we have shown that the values of the effective axial-vector current coupling constants (geffA) for the 0νββ and the two-neutrino double-β decays are close. This striking result was obtained for the first time by including vertex corrections and two-body currents in these matrix elements. In this Letter, we calculate the half-life for the 0νββ decay (T^0ν_1/2) of 136Xe using this closeness and show the convergence of the half-life with respect to the variation of the method to determine geffA . The closeness of the geffA of the two decay modes plays a decisive role in predicting T^0ν_1/2. The appropriate value of geffA depends on the assumptions made for the sectors of the nuclear structure and transition operators of the calculations within the perturbation scheme. The value geffA ~ 1 is obtained when the SkM* is used to describe the nuclear structure component, while a smaller value of geffA is obtained by applying a less realistic interaction like the SGII one.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10304 - Nuclear physics
Result continuities
Project
<a href="/en/project/GA24-10180S" target="_blank" >GA24-10180S: Exploring the Properties of Neutrinos through Double Beta Decay: An Interplay between Theory and Experiment</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
PHYSICAL REVIEW C
ISSN
2469-9985
e-ISSN
2469-9993
Volume of the periodical
112
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
"L051302-1"-"L051302-6"
UT code for WoS article
001619220500005
EID of the result in the Scopus database
2-s2.0-105026587784