The strength of the analog and Gamow-Teller giant resonances and hindrance of the 2νββ-decay rate

1998/07/14 by O. A. Rumyantsev, M. H. Urin · 4 citations
Physics and Astronomy · #Neutrino Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-th

paper · pdf · doi:10.1016/s0370-2693(98)01291-x

published as Phys.Lett. B443 (1998) 51-57 · 11 pages, 1 table

arxiv created 1998/07/14 · openalex publication_date 1998/12/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

An approach for describing the hindrance of the nuclear 2νββ-decay amplitude is proposed. The approach is based on a new formula obtained by a model-independent transformation of the initial expression for the amplitude. This formula takes explicitly into account the hindrance of the decay-amplitude due to the presence of the collective Gamow-Teller state. Calculations are performed within the simplest version of the approach. Calculated and experimental 2νββhalve-lives are compared for a wide range of nuclei.

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