Axial-vector weak coupling at medium momentum for astro neutrinos and double beta decays
Nuclear Experiment
2020-01-08 v1 Nuclear Theory
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).
Keywords
Cite
@article{arxiv.1911.09269,
title = {Axial-vector weak coupling at medium momentum for astro neutrinos and double beta decays},
author = {Hiroyasu Ejiri},
journal= {arXiv preprint arXiv:1911.09269},
year = {2020}
}