Spin dipole nuclear matrix elements for double beta decay nuclei by charge-exchange reactions

Abstract

Spin dipole (SD) strengths for double beta-decay (DBD) nuclei were studied experimentally for the first time by using measured cross sections of (3He,t) charge exchange reactions (CERs). Then SD nuclear matrix elements (NMEs) for low-lying 2- states were derived from the experimental SD strengths by referring to the experimental GT (Gamow-Teller) and F (Fermi) strengths. They are consistent with the empirical SD NMEs based on the quasi-particle model with the empirical effective SD coupling constant. The CERs are used to evaluate the SD NME, which is associated with one of the major components of the neutrino-less DBD NME.

9 pages, 1 figure

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Cited by in corpus (5)

• Neutrinoless double beta decay and neutrino mass
• Spin dipole nuclear matrix elements for double beta decay nuclei by charge-exchange reactions
• Nuclear matrix elements for neutrinoless double beta decays and spin-dipole giant resonances
• Axial-vector weak coupling at medium momentum for astro neutrinos and double beta decays
• Electromagnetic transitions from isobaric analogue states to study nuclear matrix elements for double beta decays and astro-neutrino inverse beta decays