Axial-vector weak coupling at medium momentum for astro neutrinos and double beta decays

Abstract

Neutrino nuclear responses associated with medium momentum transfer of q=20-80 MeV for astro neutrinos and double beta decays were studied by using charge exchange reactions on Te128 and Te130. Gamow-Teller and spin dipole nuclear matrix elements are found to be reduced with respect to the pnQRPA matrix elements by the coefficient of around 0.35. The reduction is discussed in terms of the quenching of axial vector coupling (g_A).

References in corpus (6)

• Double Beta Decay, Majorana Neutrinos, and Neutrino Mass
• Neutrinoless double beta decay and neutrino mass
• Vector and Axial Nucleon Form Factors:A Duality Constrained Parameterization
• Impact of the quenching of $g_{\mathrm{A}}$ on the sensitivity of $0\nu \beta \beta$ experiments
• 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 (1)

• Nuclear matrix elements for neutrinoless double beta decays and spin-dipole giant resonances