Semi-empirical formula for two-neutrino double-β decay

作     者：O. Niţescu F. Šimkovic 

作者机构：Faculty of Mathematics Physics and Informatics Comenius University in Bratislava 842 48 Bratislava Slovakia International Centre for Advanced Training and Research in Physics P.O. Box MG12 077125 Măgurele Romania “Horia Hulubei” National Institute of Physics and Nuclear Engineering 30 Reactorului POB MG-6 RO-077125 Bucharest-Măgurele Romania Institute of Experimental and Applied Physics Czech Technical University in Prague 110 00 Prague Czech Republic 

出 版 物：《Physical Review C》 (Phys. Rev. C)

年 卷 期：2025年第111卷第2期

页      面：024307-024307页

核心收录：

基　　金：GAER Romanian Ministry of Research, Innovation, and Digitalization, (PN 23 08 641 04 04/2023) Agentúra na Podporu Výskumu a Vývoja, APVV, (APVV-22-0413) Agentúra na Podporu Výskumu a Vývoja, APVV Vedecká Grantová Agentúra MŠVVaŠ SR a SAV, VEGA, (1/0618/24) Vedecká Grantová Agentúra MŠVVaŠ SR a SAV, VEGA Grantová Agentura České Republiky, GAČR, (24-10180S) Grantová Agentura České Republiky, GAČR 

摘      要：We propose a semi-empirical formula (SEF) for calculating the nuclear matrix elements (NMEs) for two-neutrino double-β decay. The SEF s dependence on the proton and neutron numbers, the pairing, isospin, and deformation properties of the initial and final nuclei is inspired by the insights offered by nuclear many-body methods and trends in experimental data. Compared with the previous phenomenological and nuclear models, the SEF yields the best agreement with the experimental NMEs. Its stability and predictive power are cross validated, and predictions are provided for nuclear systems of experimental interest.