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

References in corpus (9)

• Double Beta Decay, Majorana Neutrinos, and Neutrino Mass
• Nuclear matrix elements for double-β decay
• Nuclear Structure Relevant to Neutrinoless Double Beta Decay: 76Ge and 76Se
• On the extraction of weak transition strengths via the (3He,t) reaction at 420 MeV
• Shell-model calculations of two-neutrino double-beta decay rates of ${}^{48}$Ca with GXPF1A interaction
• Nuclear Structure Aspects of the Neutrinoless Double Beta Decay
• Neutrino beams as a probe of the nuclear isospin and spin-isospin excitations
• Nuclear matrix element for two neutrino double beta decay from 136Xe
• Spin dipole nuclear matrix elements for double beta decay nuclei by charge-exchange reactions

Cited by in corpus (2)

• Neutrinoless double beta decay and neutrino mass
• Spin dipole nuclear matrix elements for double beta decay nuclei by charge-exchange reactions